Chapter 2

Science

CTEVT diploma and PCL entrance past exam questions

Past questions and answers

80 questions set from this chapter. Most repeated first.

2079 · 1 mark

Which of the following expressions represents Ohm's law? (a) $I \propto \frac{1}{V}$ (b) $I \propto R$ (c) $V \propto I$ (d) $I \propto \frac{1}{R}$

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Answer

(c) $V \propto I$

Ohm's law states that at constant temperature the potential difference across a conductor is directly proportional to the current: $V \propto I$ , or $V = IR$ .

Answer checked by Claude Sonnet · Oct 21, 2026

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2076 · 1 mark

Which of the following expressions represents Ohm's law? (a) $I \propto 1/V$ (b) $F = ma$ (c) $w = f \times d$ (d) $V \propto I$

Similar questions: Which of the following expressions represents (2079)

Answer

(d) $V \propto I$ Ohm's law states that at constant temperature the potential difference across a conductor is directly proportional to the current through it, so $V = IR$ .

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2079 · 1 mark

In which stage of silkworm is silk produced? (a) Egg (b) Larva (c) Cocoon (d) Adult

Answer

(b) Larva

The silkworm larva spins silk to form its cocoon; silk is produced in the larval stage.

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2079 · 1 mark

How many constellations are there in the Universe? (a) 66 (b) 77 (c) 88 (d) 99

Answer

(c) 88

The International Astronomical Union recognises 88 constellations.

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2079 · 1 mark

Which gas is used in soft drinks? (a) $H_2$ (b) $CO_2$ (c) $O_2$ (d) $NH_3$

Answer

(b) $CO_2$

Carbon dioxide dissolved under pressure makes soft drinks fizzy.

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2079 · 1 mark

Which blood cells do not have a nucleus? (a) RBC (b) Plasma (c) Platelets (d) WBC

Answer

(a) RBC

Mature red blood cells lose their nucleus to make room for haemoglobin. (Platelets are cell fragments, not complete cells.)

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2079 · 1 mark

What is the molecular formula of sulphuric acid? (a) $HNO_3$ (b) $H_2SO_4$ (c) $NaCl$ (d) $SO_4$

Answer

(b) $H_2SO_4$

Sulphuric acid has two hydrogen atoms, one sulphur atom and four oxygen atoms.

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2079 · 1 mark

What is the main cause of global warming? (a) Hydrogen gas (b) Greenhouse effect (c) Acid rain (d) None of them

Answer

(b) Greenhouse effect

Gases such as $CO_2$ and methane trap heat radiated from the Earth, raising the average temperature of the atmosphere.

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2079 · 1 mark

Which of the following is a thermosetting plastic? (a) Polythene (b) PVC (c) Nylon (d) Bakelite

Answer

(d) Bakelite

Bakelite sets permanently on first heating and cannot be softened again. Polythene, PVC and nylon are thermoplastics.

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2079 · 1 mark

What is the molecular formula of ethyl alcohol? (a) $CH_3OH$ (b) $C_2H_5OH$ (c) $C_3H_7OH$ (d) $C_2H_4$

Answer

(b) $C_2H_5OH$

Ethyl alcohol (ethanol) has two carbon atoms and one $-OH$ group. $CH_3OH$ is methanol.

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2079 · 1 mark

How are diploid chromosomes represented? (a) $n$ (b) $2n$ (c) $3n$ (d) $4n$

Answer

(b) $2n$

A diploid cell has two sets of chromosomes, so it is written $2n$ . Gametes are haploid ( $n$ ).

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2079 · 1 mark

Which is the unit of specific heat capacity? (a) Joule (b) Watt (c) Joule/kg (d) Joule/kg°C

Answer

(d) Joule/kg°C

From $Q = mc\Delta\theta$ , $c = \dfrac{Q}{m\Delta\theta}$ , so the unit is J kg $^{-1}$ °C $^{-1}$ .

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2079 · 1 mark

Which gas is responsible for acid rain? (a) $H_2$ (b) $O_2$ (c) $CO_2$ (d) $Cl_2$

Answer

(c) $CO_2$

Of the options given, $CO_2$ dissolves in rain water to form carbonic acid. (The main acid-rain gases are $SO_2$ and $NO_x$ , but $CO_2$ is the only acid-forming gas listed.)

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2079 · 1 mark

What is the value of 1 atmospheric pressure? (a) $10^5$ N/m² (b) 750 mm Hg (c) 700 mm Hg (d) $10^6$ N/m²

Answer

(a) $10^5$ N/m²

1 atmosphere is about $1.013 \times 10^5$ N/m², which is $\approx 10^5$ N/m² (it equals 760 mm Hg, so 750 mm Hg is not exact).

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2079 · 1 mark

Which instrument is used to measure electric power? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Wattmeter

Answer

(d) Wattmeter

A wattmeter measures electric power. An ammeter measures current, a voltmeter measures potential difference, and a galvanometer detects small currents.

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2079 · 1 mark

How many kg can a man lift on the moon if he can lift 10 kg on the earth? (a) 50 kg (b) 60 kg (c) 1 kg (d) 6 kg

Answer

(b) 60 kg

Gravity on the moon is $\frac{1}{6}$ of that on the earth, so the weight of a given mass is 6 times less. The man can exert the same force, so he can lift $10 \times 6 = 60$ kg on the moon.

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2079 · 1 mark

What type of reaction occurs in the sun? (a) Nuclear fusion (b) Nuclear fission (c) Acid-base reaction (d) Thermal reaction

Answer

(a) Nuclear fusion

In the sun, hydrogen nuclei fuse to form helium, releasing a huge amount of energy.

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2079 · 1 mark

How many periods are there in the modern periodic table? (a) 4 (b) 5 (c) 6 (d) 7

Answer

(d) 7

The modern periodic table has 7 periods (horizontal rows) and 18 groups.

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2079 · 1 mark

Which lens is used to correct the defect of short sightedness? (a) Concave (b) Convex (c) Plano concave (d) Double concave

Answer

(a) Concave

In short sightedness (myopia) the image forms in front of the retina. A concave (diverging) lens spreads the rays so the image falls on the retina.

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2079 · 1 mark

Which acid is present in the honey bee? (a) Acetic acid (b) Citric acid (c) Sulphuric acid (d) Formic acid

Answer

(d) Formic acid

The sting of a honey bee (like that of ants) contains formic acid ( $HCOOH$ ).

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2079 · 1 mark

Which of the following is a vector quantity? (a) mass (b) volume (c) time (d) velocity

Answer

(d) velocity

Velocity has both magnitude and direction. Mass, volume and time are scalars.

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2079 Paying · 1 mark

Which part of the earth has the minimum weight of a body? (a) At the equator (b) At the North pole (c) At the South pole (d) At Terai region

Answer

(a) At the equator Weight $W = mg$ . The earth bulges at the equator and spins fastest there, so $g$ is smallest at the equator and the weight of a body is minimum there.

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2079 Paying · 1 mark

Which formula is used to measure the gravitational field intensity? (a) $mg$ (b) $\frac{GMm}{r^2}$ (c) $\frac{Gm}{r^2}$ (d) $mgh$

Answer

(c) $\frac{Gm}{r^2}$ Gravitational field intensity is the force per unit mass, $E = \frac{F}{m_0} = \frac{GMm_0/r^2}{m_0} = \frac{GM}{r^2}$ , that is $\frac{Gm}{r^2}$ with $m$ the mass producing the field.

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2079 Paying · 1 mark

What is the unit of pressure? (a) N/m² (b) Pascal (c) both a and b (d) None of them

Answer

(c) both a and b Pressure $= \frac{F}{A}$ , so its unit is N/m², which is called the pascal (Pa). Both names are correct.

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2079 Paying · 1 mark

A ship has weight $5 \times 10^5$ N; what must be the weight of water displaced by the ship to float? (a) $5 \times 10^5$ N (b) $2 \times 5 \times 10^5$ N (c) $5 \times 10^{10}$ N (d) $10 \times 10^5$ N

Answer

(a) $5 \times 10^5$ N By the law of flotation, a floating body displaces water whose weight equals the body's own weight, so the displaced water weighs $5 \times 10^5$ N.

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2079 Paying · 1 mark

Which of the following elements is used in nuclear fusion reaction? (a) Hydrogen (b) Nitrogen (c) Uranium (d) Lead

Answer

(a) Hydrogen Nuclear fusion joins light nuclei, such as isotopes of hydrogen, into helium with release of energy (as in the Sun). Uranium is used in fission.

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2079 Paying · 1 mark

What is the unit of heat energy? (a) Celsius (b) Fahrenheit (c) Kelvin (d) Joule

Answer

(d) Joule Heat is a form of energy, so its SI unit is the joule (J). Celsius, Fahrenheit and Kelvin are units of temperature.

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2079 Paying · 1 mark

What is the boiling point of alcohol? (a) 70°C (b) 72°C (c) 76°C (d) 78°C

Answer

(d) 78°C The boiling point of ethyl alcohol (ethanol) is about 78°C.

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2079 Paying · 1 mark

Which is the electronic configuration of the oxygen atom? (a) $1s^2, 2s^2 2p^6$ (b) $1s^2, 2s^2 2p^4$ (c) $1s^2, 2s^2 2p^3$ (d) $1s^2, 2s^2 2p^5$

Answer

(b) $1s^2, 2s^2 2p^4$ Oxygen has atomic number 8, so 8 electrons fill as $1s^2$ (2), $2s^2$ (2) and $2p^4$ (4).

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2079 Paying · 1 mark

Which is the molecular formula of nitric acid? (a) $NO_2$ (b) $NHO_3$ (c) $NO_3$ (d) $HNO_2$

Answer

(b) $NHO_3$ (the formula of nitric acid, HNO $_3$ ) Nitric acid has one hydrogen, one nitrogen and three oxygen atoms. Of the options, only (b) has these atoms, written in the order H, N, O $_3$ as HNO $_3$ .

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2079 Paying · 1 mark

What is the pH value of water? (a) 5 (b) 6 (c) 7 (d) 8

Answer

(c) 7 Pure water is neutral: $[H^+] = [OH^-] = 10^{-7}$ mol/L, so $pH = -\log(10^{-7}) = 7$ .

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2079 Paying · 1 mark

Which gas turns wet red litmus paper into blue? (a) $CO_2$ (b) $O_2$ (c) $N_2$ (d) $NH_3$

Answer

(d) $NH_3$ Ammonia is a basic gas; dissolving in the moisture on the litmus paper it forms $NH_4OH$ , which turns red litmus blue.

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2079 Paying · 1 mark

What is the IUPAC name of ethyl alcohol? (a) Methanol (b) Butanol (c) Ethanol (d) Propanol

Answer

(c) Ethanol Ethyl alcohol is $C_2H_5OH$ , a two-carbon alcohol, so its IUPAC name is ethanol.

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2079 Paying · 1 mark

Which of the following glass is called potash lime glass? (a) Water glass (b) Silica glass (c) Hard glass (d) Borosilicate glass

Answer

(c) Hard glass Potash lime glass (Bohemian glass) is made from potassium carbonate, calcium carbonate and silica. It is hard, high melting and resistant to chemicals, hence called hard glass.

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2079 Paying · 1 mark

Where is the pituitary gland located? (a) Testis (b) Brain (c) Pancreas (d) Liver

Answer

(b) Brain The pituitary gland is a small endocrine gland at the base of the brain, and is called the master gland.

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2079 Paying · 1 mark

How long do RBCs tentatively survive? (a) 120 days (b) 4-7 days (c) 2-3 days (d) 100 days

Answer

(a) 120 days Red blood cells live about 120 days and are then destroyed in the spleen and liver.

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2079 Paying · 1 mark

How many chromosomes are present in the onion? (a) 13 pairs (b) 10 pairs (c) 23 pairs (d) 16 pairs

Answer

(d) 16 pairs (the onion has 16 chromosomes, $2n = 16$ ) The diploid number of onion is 16. Of the given options, (d) is the one that matches the number 16.

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2079 Paying · 1 mark

What is the genotype ratio of the $F_2$ generation obtained from a monohybrid cross? (a) 1:2:1 (b) 2:2 (c) 3:1 (d) 2:1:1

Answer

(a) 1:2:1 In a monohybrid cross $Tt \times Tt$ the $F_2$ generation is $TT : Tt : tt = 1 : 2 : 1$ (genotype ratio), while the phenotype ratio is 3:1.

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2079 Paying · 1 mark

What is the percentage of $CO_2$ in air? (a) 3 (b) 0.3 (c) 0.03 (d) 0.33

Answer

(c) 0.03 Dry air contains about 78% nitrogen, 21% oxygen, 0.9% argon and about 0.03% carbon dioxide.

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2079 Paying · 1 mark

Which is the non-degradable pollutant? (a) Glass (b) Wood (c) Stone (d) Clothes

Answer

(a) Glass Non-degradable pollutants are not broken down by microorganisms. Glass stays unchanged for ages, while wood and clothes are biodegradable.

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2079 Paying · 1 mark

How many types of galaxies are classified? (a) 1 (b) 2 (c) 3 (d) 4

Answer

(c) 3 Galaxies are classified into three types: spiral, elliptical and irregular.

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2076 · 1 mark

Nature of the image formed by a convex mirror is ...... (a) Real, inverted, diminished (b) Real, inverted, enlarged (c) Virtual, erect, diminished (d) Virtual, erect, enlarged

Answer

(c) Virtual, erect, diminished A convex mirror always forms a virtual, erect and smaller image, whatever the position of the object.

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2076 · 1 mark

Which of the following is a vector quantity? (a) Mass (b) Pressure (c) Force (d) Distance

Answer

(c) Force Force has both magnitude and direction. Mass, pressure and distance are scalars.

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2076 · 1 mark

Which device is used to measure the density of water? (a) Lactometer (b) Barometer (c) Hydrometer (d) Voltmeter

Answer

(c) Hydrometer A hydrometer measures the density (relative density) of liquids. A lactometer is specifically for milk, a barometer for air pressure and a voltmeter for potential difference.

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2076 · 1 mark

What is the freezing point of alcohol thermometer? (a) $-115°C$ (b) $-125°C$ (c) $-135°C$ (d) $-105°C$

Answer

(a) $-115°C$ Alcohol freezes at about $-115°C$ , which is why alcohol thermometers are used for very low temperatures where mercury would freeze at $-39°C$ .

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2076 · 1 mark

The S.I. unit of potential difference is: (a) Volt (b) Newton (c) Watt (d) Ampere

Answer

(a) Volt Potential difference is measured in volts (V), where $1\,\text{V} = 1\,\text{J/C}$ .

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2076 · 1 mark

The total resistance when three resistances $2\,\Omega$ , $4\,\Omega$ , $5\,\Omega$ are connected in series is ........ (a) $12\,\Omega$ (b) $11\,\Omega$ (c) $13\,\Omega$ (d) $15\,\Omega$

Answer

(b) $11\,\Omega$ In series the resistances add: $R = 2 + 4 + 5 = 11\,\Omega$

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2076 · 1 mark

What is the S.I. unit of magnetic field strength? (a) Tesla (b) Voltage (c) Ohm (d) Ampere

Answer

(a) Tesla The SI unit of magnetic field strength (magnetic flux density) is the tesla (T), equal to $1\,\text{N A}^{-1}\text{m}^{-1}$ .

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2076 · 1 mark

Which device is used to test the current flowing or not in the conductor? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Battery

Answer

(c) Galvanometer A galvanometer is a sensitive instrument that detects whether a current flows in a circuit, by the deflection of its pointer.

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2076 · 1 mark

The frequency of power supply used in Nepal is (a) 70 Hz (b) 50 Hz (c) 60 Hz (d) 220 Hz

Answer

(b) 50 Hz The AC supply in Nepal is 220 V at a frequency of 50 Hz.

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2076 · 1 mark

How many valence electrons are present in the inert gas? (a) 4 or 8 (b) 2 or 8 (c) 2 or 10 (d) 2 or 6

Answer

(b) 2 or 8 Helium has 2 valence electrons (a duplet) and the other inert gases (Ne, Ar, Kr, Xe, Rn) have 8 (an octet).

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2076 · 1 mark

Which of the following is not an acid? (a) HCl (b) HBr (c) $H_2CO_3$ (d) NaCl

Answer

(d) NaCl HCl, HBr and $H_2CO_3$ release H $^+$ ions in water. NaCl is a salt formed by neutralisation of HCl and NaOH.

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2076 · 1 mark

What is glass? (a) Liquid (b) Vapour (c) Solid (d) Super cooled liquid

Answer

(d) Super cooled liquid Glass is an amorphous substance with no regular crystal structure and is regarded as a super cooled liquid of very high viscosity.

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2076 · 1 mark

At what temperature does evaporation of water take place? (a) At its boiling point (b) At all temperatures (c) At its freezing point (d) At a fixed temperature

Answer

(b) At all temperatures Evaporation is a surface phenomenon that occurs at every temperature, unlike boiling, which occurs only at the boiling point.

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2076 · 1 mark

Which one is the lightest metal? (a) Lithium (b) Sodium (c) Potassium (d) Magnesium

Answer

(a) Lithium Lithium has a density of about $0.53\,\text{g/cm}^3$ , lower than any other metal, so it is the lightest metal.

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2076 · 1 mark

Which metal is found freely in nature? (a) Gold (b) Copper (c) Sodium (d) Magnesium

Answer

(a) Gold Gold is unreactive, so it occurs in the native (free) state. Copper is found mainly as compounds, and sodium and magnesium are too reactive to occur free.

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2076 · 1 mark

Where is gene found? (a) DNA (b) Mitochondria (c) Chloroplast (d) All of them

Answer

(a) DNA

A gene is a segment of DNA that carries the code for a protein or RNA. Mitochondria and chloroplasts contain their own small DNA, but the gene itself is always a DNA sequence.

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2076 · 1 mark

Malaria is caused by (a) Mosquito (b) Housefly (c) Paramecium (d) Plasmodium

Answer

(d) Plasmodium

Malaria is caused by the protozoan Plasmodium. The female Anopheles mosquito only acts as the vector that carries it.

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2076 · 1 mark

Virus contains (a) DNA only (b) RNA only (c) DNA and RNA (d) DNA or RNA

Answer

(d) DNA or RNA

A virus has only one type of nucleic acid in its core, either DNA or RNA, never both. This is how viruses differ from cellular organisms.

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2076 · 1 mark

Blood is blue in colour in (a) Protozoa (b) Annelida (c) Mollusca (d) Echinodermata

Answer

(c) Mollusca

Molluscs (such as snails and octopus) have the copper-containing respiratory pigment haemocyanin, which makes their blood blue when oxygenated.

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2075 · 1 mark

What is the critical angle of glass? (a) 24° (b) 42° (c) 51° (d) 35°

Answer

(b) 42° The critical angle depends on the refractive index: $\sin C = \dfrac{1}{n}$ . For glass $n \approx 1.5$ , so $\sin C \approx 0.667$ and $C \approx 42^\circ$ .

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2075 · 1 mark

Which metal vapour is filled inside a fluorescent lamp? (a) Iron (b) Copper (c) Mercury (d) silver

Answer

(c) Mercury A fluorescent lamp contains mercury vapour at low pressure with argon. The discharge produces ultraviolet light, which the phosphor coating on the tube converts to visible light.

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2075 · 1 mark

What is the value of 'g' at the equator? (a) $9.83\ m/s^2$ (b) $9.78\ m/s^2$ (c) $9.8\ m/s$ (d) $9.85\ m/kg$

Answer

(b) $9.78\ m/s^2$ The value of $g$ is least at the equator, about $9.78\ m/s^2$ . It is about $9.83\ m/s^2$ at the poles, and the standard value is $9.8\ m/s^2$ . The equator has a larger radius and the Earth's rotation has the greatest effect there.

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2075 · 1 mark

Based on which principle is a hydraulic jack constructed? (a) Pascal's Law (b) Archimedes Principle (c) Newton's Law (d) Mendel's law

Answer

(a) Pascal's Law A hydraulic jack works on Pascal's law: pressure applied to an enclosed liquid is transmitted equally in all directions. A small force on a small piston gives a large force on a large piston, since $\dfrac{F_1}{A_1} = \dfrac{F_2}{A_2}$ .

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2075 · 1 mark

Which of the following is used in local anesthesia? (a) Methane (b) Ethyl Alcohol (c) Glycerol (d) Diethyl ether

Answer

(b) Ethyl Alcohol Of the options, ethyl alcohol is the one used for local (nerve block) anaesthesia, when injected near a nerve. Diethyl ether is a general anaesthetic, and methane and glycerol are not anaesthetics.

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2075 · 1 mark

Which of the following methods is used to separate a mixture of sand and iodine? (a) Centrifugation (b) Crystallization (c) Sublimation (d) Evaporation

Answer

(c) Sublimation Iodine sublimes on heating (solid to vapour without melting), while sand does not. The iodine vapour is collected and cooled to give solid iodine, leaving the sand behind.

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2075 · 1 mark

Which gas is taken by plants during respiration? (a) Oxygen (b) Carbon dioxide (c) Nitrogen (d) Methane

Answer

(a) Oxygen Plants respire like all living cells: they take in oxygen to oxidise glucose and release carbon dioxide and water. (Carbon dioxide is taken in during photosynthesis, not respiration.)

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2075 · 1 mark

In which division of the plant kingdom does the fern plant belong? (a) Thallophyta (b) Angiosperm (c) Bryophyta (d) Pteridophyta

Answer

(d) Pteridophyta Ferns have true roots, stem and leaves with vascular tissue but reproduce by spores and have no seeds or flowers, which places them in Pteridophyta.

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2075 · 1 mark

Which bone is present in the knee cap of the human body? (a) Sternum (b) Scapula (c) Patella (d) Clavicle

Answer

(c) Patella The patella is the small triangular bone in front of the knee joint that protects it.

Answer checked by Claude Sonnet · Oct 21, 2026

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2075 · 1 mark

In which layer of the atmosphere do aeroplanes fly? (a) Stratosphere (b) Ionosphere (c) Troposphere (d) Exosphere

Answer

(a) Stratosphere Jet aeroplanes cruise in the lower stratosphere, above the weather and turbulence of the troposphere, where the air is thin and calm.

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2075 · 1 mark

Mass is a ----- quantity. (a) Vector (b) Scalar (c) Both a & b (d) None

Answer

(b) Scalar Mass has magnitude only and no direction, so it is a scalar quantity.

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2075 · 1 mark

Moving air possesses? (a) Kinetic energy (b) Potential energy (c) Solar energy (d) Tidal energy

Answer

(a) Kinetic energy Any moving body has kinetic energy, and moving air (wind) is used to run windmills for this reason.

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2075 · 1 mark

A person who cannot see nearby objects clearly but can see distant objects distinctly is suffering from (a) Long sightedness (b) Short sightedness (c) Myopia (d) Glaucoma

Answer

(a) Long sightedness In long sightedness (hypermetropia) the eyeball is too short or the lens too weak, so the image of a near object forms behind the retina. Near objects are blurred while distant ones are clear, and a convex lens corrects it.

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2075 · 1 mark

The atomic number of Nitrogen is---- (a) 5 (b) 7 (c) 9 (d) 10

Answer

(b) 7 Nitrogen has 7 protons, so its atomic number is 7 (electronic configuration 2, 5).

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2075 · 1 mark

Water soluble metallic oxides and hydroxides only are (a) Bases (b) Strong bases (c) Weak bases (d) Alkalis

Answer

(d) Alkalis Bases that dissolve in water are called alkalis (for example NaOH and KOH). All alkalis are bases, but not all bases are soluble.

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2075 · 1 mark

Carbon dioxide gas should be collected by the (a) Downward displacement of water (b) Upward displacement of water (c) Right side displacement of water (d) Left side displacement of water

Answer

(a) Downward displacement of water Carbon dioxide is heavier than air and fairly soluble in water, so it is not collected over water in practice. It is collected by downward displacement (of air), and among these options (a) is the intended choice.

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2075 · 1 mark

Copper is a (a) Good conductor of heat and electricity (b) Bad conductor of heat and electricity (c) Neutral conductor to heat and electricity (d) None of the above

Answer

(a) Good conductor of heat and electricity Copper has many free electrons, so it conducts heat and electricity well and is widely used in electric wires.

Answer checked by Claude Sonnet · Oct 21, 2026

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2075 · 1 mark

Which virus causes common cold? (a) HIV (b) Retro (c) Rhino (d) Paramyxo

Answer

(c) Rhino Rhinoviruses infect the nose and upper respiratory tract and are the main cause of the common cold.

Answer checked by Claude Sonnet · Oct 21, 2026

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2075 · 1 mark

Mushroom is a ---- fungus. (a) Vascular (b) Chlorophyll bearing (c) Saprophytic (d) woody

Answer

(c) Saprophytic Mushrooms have no chlorophyll and feed on dead and decaying organic matter, so they are saprophytic fungi.

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2075 · 1 mark

In mitosis, which phase is called migratory phase? (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Answer

(c) Anaphase In anaphase the sister chromatids separate and migrate to opposite poles of the cell, hence it is called the migratory phase.

Answer checked by Claude Sonnet · Oct 21, 2026

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Questions from CTEVT 2079 Scholarship seats entrance paper (English, Science, Mathematics) (Scholarship seats entrance, 2079 BS), CTEVT 2079 Full-paying seats entrance paper (English, Science, Mathematics) (Full-paying seats entrance, 2079 BS), CTEVT 2076 Scholarship seats entrance paper (English, Science, Mathematics) (Scholarship seats entrance, 2076 BS) and CTEVT 2075 Scholarship seats entrance paper (English, Science, Mathematics) (Scholarship seats entrance, 2075 BS). Answers are written for this site; check them against your class notes.

Past questions and answers

1.Which of the following expressions represents Ohm's law? (a) I∝1VI \propto \frac{1}{V}I∝V1​ (b) I∝RI \propto RI∝R (c) V∝IV \propto IV∝I (d) I∝1RI \propto \frac{1}{R}I∝R1​

2.Which of the following expressions represents Ohm's law? (a) I∝1/VI \propto 1/VI∝1/V (b) F=maF = maF=ma (c) w=f×dw = f \times dw=f×d (d) V∝IV \propto IV∝I

3.In which stage of silkworm is silk produced? (a) Egg (b) Larva (c) Cocoon (d) Adult

4.How many constellations are there in the Universe? (a) 66 (b) 77 (c) 88 (d) 99

5.Which gas is used in soft drinks? (a) H2H_2H2​ (b) CO2CO_2CO2​ (c) O2O_2O2​ (d) NH3NH_3NH3​

6.Which blood cells do not have a nucleus? (a) RBC (b) Plasma (c) Platelets (d) WBC

7.What is the molecular formula of sulphuric acid? (a) HNO3HNO_3HNO3​ (b) H2SO4H_2SO_4H2​SO4​ (c) NaClNaClNaCl (d) SO4SO_4SO4​

8.What is the main cause of global warming? (a) Hydrogen gas (b) Greenhouse effect (c) Acid rain (d) None of them

9.Which of the following is a thermosetting plastic? (a) Polythene (b) PVC (c) Nylon (d) Bakelite

10.What is the molecular formula of ethyl alcohol? (a) CH3OHCH_3OHCH3​OH (b) C2H5OHC_2H_5OHC2​H5​OH (c) C3H7OHC_3H_7OHC3​H7​OH (d) C2H4C_2H_4C2​H4​

11.How are diploid chromosomes represented? (a) nnn (b) 2n2n2n (c) 3n3n3n (d) 4n4n4n

12.Which is the unit of specific heat capacity? (a) Joule (b) Watt (c) Joule/kg (d) Joule/kg°C

13.Which gas is responsible for acid rain? (a) H2H_2H2​ (b) O2O_2O2​ (c) CO2CO_2CO2​ (d) Cl2Cl_2Cl2​

14.What is the value of 1 atmospheric pressure? (a) 10510^5105 N/m² (b) 750 mm Hg (c) 700 mm Hg (d) 10610^6106 N/m²

15.Which instrument is used to measure electric power? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Wattmeter

16.How many kg can a man lift on the moon if he can lift 10 kg on the earth? (a) 50 kg (b) 60 kg (c) 1 kg (d) 6 kg

17.What type of reaction occurs in the sun? (a) Nuclear fusion (b) Nuclear fission (c) Acid-base reaction (d) Thermal reaction

18.How many periods are there in the modern periodic table? (a) 4 (b) 5 (c) 6 (d) 7

19.Which lens is used to correct the defect of short sightedness? (a) Concave (b) Convex (c) Plano concave (d) Double concave

20.Which acid is present in the honey bee? (a) Acetic acid (b) Citric acid (c) Sulphuric acid (d) Formic acid

21.Which of the following is a vector quantity? (a) mass (b) volume (c) time (d) velocity

22.Which part of the earth has the minimum weight of a body? (a) At the equator (b) At the North pole (c) At the South pole (d) At Terai region

23.Which formula is used to measure the gravitational field intensity? (a) mgmgmg (b) GMmr2\frac{GMm}{r^2}r2GMm​ (c) Gmr2\frac{Gm}{r^2}r2Gm​ (d) mghmghmgh

24.What is the unit of pressure? (a) N/m² (b) Pascal (c) both a and b (d) None of them

25.A ship has weight 5×1055 \times 10^55×105 N; what must be the weight of water displaced by the ship to float? (a) 5×1055 \times 10^55×105 N (b) 2×5×1052 \times 5 \times 10^52×5×105 N (c) 5×10105 \times 10^{10}5×1010 N (d) 10×10510 \times 10^510×105 N

26.Which of the following elements is used in nuclear fusion reaction? (a) Hydrogen (b) Nitrogen (c) Uranium (d) Lead

27.What is the unit of heat energy? (a) Celsius (b) Fahrenheit (c) Kelvin (d) Joule

28.What is the boiling point of alcohol? (a) 70°C (b) 72°C (c) 76°C (d) 78°C

29.Which is the electronic configuration of the oxygen atom? (a) 1s2,2s22p61s^2, 2s^2 2p^61s2,2s22p6 (b) 1s2,2s22p41s^2, 2s^2 2p^41s2,2s22p4 (c) 1s2,2s22p31s^2, 2s^2 2p^31s2,2s22p3 (d) 1s2,2s22p51s^2, 2s^2 2p^51s2,2s22p5

30.Which is the molecular formula of nitric acid? (a) NO2NO_2NO2​ (b) NHO3NHO_3NHO3​ (c) NO3NO_3NO3​ (d) HNO2HNO_2HNO2​

31.What is the pH value of water? (a) 5 (b) 6 (c) 7 (d) 8

32.Which gas turns wet red litmus paper into blue? (a) CO2CO_2CO2​ (b) O2O_2O2​ (c) N2N_2N2​ (d) NH3NH_3NH3​

33.What is the IUPAC name of ethyl alcohol? (a) Methanol (b) Butanol (c) Ethanol (d) Propanol

34.Which of the following glass is called potash lime glass? (a) Water glass (b) Silica glass (c) Hard glass (d) Borosilicate glass

35.Where is the pituitary gland located? (a) Testis (b) Brain (c) Pancreas (d) Liver

36.How long do RBCs tentatively survive? (a) 120 days (b) 4-7 days (c) 2-3 days (d) 100 days

37.How many chromosomes are present in the onion? (a) 13 pairs (b) 10 pairs (c) 23 pairs (d) 16 pairs

38.What is the genotype ratio of the F2F_2F2​ generation obtained from a monohybrid cross? (a) 1:2:1 (b) 2:2 (c) 3:1 (d) 2:1:1

39.What is the percentage of CO2CO_2CO2​ in air? (a) 3 (b) 0.3 (c) 0.03 (d) 0.33

40.Which is the non-degradable pollutant? (a) Glass (b) Wood (c) Stone (d) Clothes

41.How many types of galaxies are classified? (a) 1 (b) 2 (c) 3 (d) 4

42.Nature of the image formed by a convex mirror is ...... (a) Real, inverted, diminished (b) Real, inverted, enlarged (c) Virtual, erect, diminished (d) Virtual, erect, enlarged

43.Which of the following is a vector quantity? (a) Mass (b) Pressure (c) Force (d) Distance

44.Which device is used to measure the density of water? (a) Lactometer (b) Barometer (c) Hydrometer (d) Voltmeter

45.What is the freezing point of alcohol thermometer? (a) −115°C-115°C−115°C (b) −125°C-125°C−125°C (c) −135°C-135°C−135°C (d) −105°C-105°C−105°C

46.The S.I. unit of potential difference is: (a) Volt (b) Newton (c) Watt (d) Ampere

47.The total resistance when three resistances 2 Ω2\,\Omega2Ω, 4 Ω4\,\Omega4Ω, 5 Ω5\,\Omega5Ω are connected in series is ........ (a) 12 Ω12\,\Omega12Ω (b) 11 Ω11\,\Omega11Ω (c) 13 Ω13\,\Omega13Ω (d) 15 Ω15\,\Omega15Ω

48.What is the S.I. unit of magnetic field strength? (a) Tesla (b) Voltage (c) Ohm (d) Ampere

49.Which device is used to test the current flowing or not in the conductor? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Battery

50.The frequency of power supply used in Nepal is (a) 70 Hz (b) 50 Hz (c) 60 Hz (d) 220 Hz

51.How many valence electrons are present in the inert gas? (a) 4 or 8 (b) 2 or 8 (c) 2 or 10 (d) 2 or 6

52.Which of the following is not an acid? (a) HCl (b) HBr (c) H2CO3H_2CO_3H2​CO3​ (d) NaCl

53.What is glass? (a) Liquid (b) Vapour (c) Solid (d) Super cooled liquid

54.At what temperature does evaporation of water take place? (a) At its boiling point (b) At all temperatures (c) At its freezing point (d) At a fixed temperature

55.Which one is the lightest metal? (a) Lithium (b) Sodium (c) Potassium (d) Magnesium

56.Which metal is found freely in nature? (a) Gold (b) Copper (c) Sodium (d) Magnesium

57.Where is gene found? (a) DNA (b) Mitochondria (c) Chloroplast (d) All of them

58.Malaria is caused by (a) Mosquito (b) Housefly (c) Paramecium (d) Plasmodium

59.Virus contains (a) DNA only (b) RNA only (c) DNA and RNA (d) DNA or RNA

60.Blood is blue in colour in (a) Protozoa (b) Annelida (c) Mollusca (d) Echinodermata

61.What is the critical angle of glass? (a) 24° (b) 42° (c) 51° (d) 35°

62.Which metal vapour is filled inside a fluorescent lamp? (a) Iron (b) Copper (c) Mercury (d) silver

63.What is the value of 'g' at the equator? (a) 9.83 m/s29.83\ m/s^29.83 m/s2 (b) 9.78 m/s29.78\ m/s^29.78 m/s2 (c) 9.8 m/s9.8\ m/s9.8 m/s (d) 9.85 m/kg9.85\ m/kg9.85 m/kg

64.Based on which principle is a hydraulic jack constructed? (a) Pascal's Law (b) Archimedes Principle (c) Newton's Law (d) Mendel's law

65.Which of the following is used in local anesthesia? (a) Methane (b) Ethyl Alcohol (c) Glycerol (d) Diethyl ether

66.Which of the following methods is used to separate a mixture of sand and iodine? (a) Centrifugation (b) Crystallization (c) Sublimation (d) Evaporation

67.Which gas is taken by plants during respiration? (a) Oxygen (b) Carbon dioxide (c) Nitrogen (d) Methane

68.In which division of the plant kingdom does the fern plant belong? (a) Thallophyta (b) Angiosperm (c) Bryophyta (d) Pteridophyta

69.Which bone is present in the knee cap of the human body? (a) Sternum (b) Scapula (c) Patella (d) Clavicle

70.In which layer of the atmosphere do aeroplanes fly? (a) Stratosphere (b) Ionosphere (c) Troposphere (d) Exosphere

71.Mass is a ----- quantity. (a) Vector (b) Scalar (c) Both a & b (d) None

72.Moving air possesses? (a) Kinetic energy (b) Potential energy (c) Solar energy (d) Tidal energy

73.A person who cannot see nearby objects clearly but can see distant objects distinctly is suffering from (a) Long sightedness (b) Short sightedness (c) Myopia (d) Glaucoma

74.The atomic number of Nitrogen is---- (a) 5 (b) 7 (c) 9 (d) 10

75.Water soluble metallic oxides and hydroxides only are (a) Bases (b) Strong bases (c) Weak bases (d) Alkalis

76.Carbon dioxide gas should be collected by the (a) Downward displacement of water (b) Upward displacement of water (c) Right side displacement of water (d) Left side displacement of water

77.Copper is a (a) Good conductor of heat and electricity (b) Bad conductor of heat and electricity (c) Neutral conductor to heat and electricity (d) None of the above

78.Which virus causes common cold? (a) HIV (b) Retro (c) Rhino (d) Paramyxo

79.Mushroom is a ---- fungus. (a) Vascular (b) Chlorophyll bearing (c) Saprophytic (d) woody

Which of the following expressions represents Ohm's law? (a) $I \propto \frac{1}{V}$ (b) $I \propto R$ (c) $V \propto I$ (d) $I \propto \frac{1}{R}$

Which of the following expressions represents Ohm's law? (a) $I \propto 1/V$ (b) $F = ma$ (c) $w = f \times d$ (d) $V \propto I$

In which stage of silkworm is silk produced? (a) Egg (b) Larva (c) Cocoon (d) Adult

How many constellations are there in the Universe? (a) 66 (b) 77 (c) 88 (d) 99

Which gas is used in soft drinks? (a) $H_2$ (b) $CO_2$ (c) $O_2$ (d) $NH_3$

Which blood cells do not have a nucleus? (a) RBC (b) Plasma (c) Platelets (d) WBC

What is the molecular formula of sulphuric acid? (a) $HNO_3$ (b) $H_2SO_4$ (c) $NaCl$ (d) $SO_4$

What is the main cause of global warming? (a) Hydrogen gas (b) Greenhouse effect (c) Acid rain (d) None of them

Which of the following is a thermosetting plastic? (a) Polythene (b) PVC (c) Nylon (d) Bakelite

What is the molecular formula of ethyl alcohol? (a) $CH_3OH$ (b) $C_2H_5OH$ (c) $C_3H_7OH$ (d) $C_2H_4$

How are diploid chromosomes represented? (a) $n$ (b) $2n$ (c) $3n$ (d) $4n$

Which is the unit of specific heat capacity? (a) Joule (b) Watt (c) Joule/kg (d) Joule/kg°C

Which gas is responsible for acid rain? (a) $H_2$ (b) $O_2$ (c) $CO_2$ (d) $Cl_2$

What is the value of 1 atmospheric pressure? (a) $10^5$ N/m² (b) 750 mm Hg (c) 700 mm Hg (d) $10^6$ N/m²

Which instrument is used to measure electric power? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Wattmeter

How many kg can a man lift on the moon if he can lift 10 kg on the earth? (a) 50 kg (b) 60 kg (c) 1 kg (d) 6 kg

What type of reaction occurs in the sun? (a) Nuclear fusion (b) Nuclear fission (c) Acid-base reaction (d) Thermal reaction

How many periods are there in the modern periodic table? (a) 4 (b) 5 (c) 6 (d) 7

Which lens is used to correct the defect of short sightedness? (a) Concave (b) Convex (c) Plano concave (d) Double concave

Which acid is present in the honey bee? (a) Acetic acid (b) Citric acid (c) Sulphuric acid (d) Formic acid

Which of the following is a vector quantity? (a) mass (b) volume (c) time (d) velocity

Which part of the earth has the minimum weight of a body? (a) At the equator (b) At the North pole (c) At the South pole (d) At Terai region

Which formula is used to measure the gravitational field intensity? (a) $mg$ (b) $\frac{GMm}{r^2}$ (c) $\frac{Gm}{r^2}$ (d) $mgh$

What is the unit of pressure? (a) N/m² (b) Pascal (c) both a and b (d) None of them

A ship has weight $5 \times 10^5$ N; what must be the weight of water displaced by the ship to float? (a) $5 \times 10^5$ N (b) $2 \times 5 \times 10^5$ N (c) $5 \times 10^{10}$ N (d) $10 \times 10^5$ N

Which of the following elements is used in nuclear fusion reaction? (a) Hydrogen (b) Nitrogen (c) Uranium (d) Lead

What is the unit of heat energy? (a) Celsius (b) Fahrenheit (c) Kelvin (d) Joule

What is the boiling point of alcohol? (a) 70°C (b) 72°C (c) 76°C (d) 78°C

Which is the electronic configuration of the oxygen atom? (a) $1s^2, 2s^2 2p^6$ (b) $1s^2, 2s^2 2p^4$ (c) $1s^2, 2s^2 2p^3$ (d) $1s^2, 2s^2 2p^5$

Which is the molecular formula of nitric acid? (a) $NO_2$ (b) $NHO_3$ (c) $NO_3$ (d) $HNO_2$

What is the pH value of water? (a) 5 (b) 6 (c) 7 (d) 8

Which gas turns wet red litmus paper into blue? (a) $CO_2$ (b) $O_2$ (c) $N_2$ (d) $NH_3$

What is the IUPAC name of ethyl alcohol? (a) Methanol (b) Butanol (c) Ethanol (d) Propanol

Which of the following glass is called potash lime glass? (a) Water glass (b) Silica glass (c) Hard glass (d) Borosilicate glass

Where is the pituitary gland located? (a) Testis (b) Brain (c) Pancreas (d) Liver

How long do RBCs tentatively survive? (a) 120 days (b) 4-7 days (c) 2-3 days (d) 100 days

How many chromosomes are present in the onion? (a) 13 pairs (b) 10 pairs (c) 23 pairs (d) 16 pairs

What is the genotype ratio of the $F_2$ generation obtained from a monohybrid cross? (a) 1:2:1 (b) 2:2 (c) 3:1 (d) 2:1:1

What is the percentage of $CO_2$ in air? (a) 3 (b) 0.3 (c) 0.03 (d) 0.33

Which is the non-degradable pollutant? (a) Glass (b) Wood (c) Stone (d) Clothes

How many types of galaxies are classified? (a) 1 (b) 2 (c) 3 (d) 4

Nature of the image formed by a convex mirror is ...... (a) Real, inverted, diminished (b) Real, inverted, enlarged (c) Virtual, erect, diminished (d) Virtual, erect, enlarged

Which of the following is a vector quantity? (a) Mass (b) Pressure (c) Force (d) Distance

Which device is used to measure the density of water? (a) Lactometer (b) Barometer (c) Hydrometer (d) Voltmeter

What is the freezing point of alcohol thermometer? (a) $-115°C$ (b) $-125°C$ (c) $-135°C$ (d) $-105°C$

The S.I. unit of potential difference is: (a) Volt (b) Newton (c) Watt (d) Ampere

The total resistance when three resistances $2\,\Omega$ , $4\,\Omega$ , $5\,\Omega$ are connected in series is ........ (a) $12\,\Omega$ (b) $11\,\Omega$ (c) $13\,\Omega$ (d) $15\,\Omega$

What is the S.I. unit of magnetic field strength? (a) Tesla (b) Voltage (c) Ohm (d) Ampere

Which device is used to test the current flowing or not in the conductor? (a) Ammeter (b) Voltmeter (c) Galvanometer (d) Battery

The frequency of power supply used in Nepal is (a) 70 Hz (b) 50 Hz (c) 60 Hz (d) 220 Hz

How many valence electrons are present in the inert gas? (a) 4 or 8 (b) 2 or 8 (c) 2 or 10 (d) 2 or 6

Which of the following is not an acid? (a) HCl (b) HBr (c) $H_2CO_3$ (d) NaCl

What is glass? (a) Liquid (b) Vapour (c) Solid (d) Super cooled liquid

At what temperature does evaporation of water take place? (a) At its boiling point (b) At all temperatures (c) At its freezing point (d) At a fixed temperature

Which one is the lightest metal? (a) Lithium (b) Sodium (c) Potassium (d) Magnesium

Which metal is found freely in nature? (a) Gold (b) Copper (c) Sodium (d) Magnesium

Where is gene found? (a) DNA (b) Mitochondria (c) Chloroplast (d) All of them

Malaria is caused by (a) Mosquito (b) Housefly (c) Paramecium (d) Plasmodium

Virus contains (a) DNA only (b) RNA only (c) DNA and RNA (d) DNA or RNA

Blood is blue in colour in (a) Protozoa (b) Annelida (c) Mollusca (d) Echinodermata

What is the critical angle of glass? (a) 24° (b) 42° (c) 51° (d) 35°

Which metal vapour is filled inside a fluorescent lamp? (a) Iron (b) Copper (c) Mercury (d) silver

What is the value of 'g' at the equator? (a) $9.83\ m/s^2$ (b) $9.78\ m/s^2$ (c) $9.8\ m/s$ (d) $9.85\ m/kg$

Based on which principle is a hydraulic jack constructed? (a) Pascal's Law (b) Archimedes Principle (c) Newton's Law (d) Mendel's law

Which of the following is used in local anesthesia? (a) Methane (b) Ethyl Alcohol (c) Glycerol (d) Diethyl ether

Which of the following methods is used to separate a mixture of sand and iodine? (a) Centrifugation (b) Crystallization (c) Sublimation (d) Evaporation

Which gas is taken by plants during respiration? (a) Oxygen (b) Carbon dioxide (c) Nitrogen (d) Methane

In which division of the plant kingdom does the fern plant belong? (a) Thallophyta (b) Angiosperm (c) Bryophyta (d) Pteridophyta

Which bone is present in the knee cap of the human body? (a) Sternum (b) Scapula (c) Patella (d) Clavicle

In which layer of the atmosphere do aeroplanes fly? (a) Stratosphere (b) Ionosphere (c) Troposphere (d) Exosphere

Mass is a ----- quantity. (a) Vector (b) Scalar (c) Both a & b (d) None

Moving air possesses? (a) Kinetic energy (b) Potential energy (c) Solar energy (d) Tidal energy

A person who cannot see nearby objects clearly but can see distant objects distinctly is suffering from (a) Long sightedness (b) Short sightedness (c) Myopia (d) Glaucoma

The atomic number of Nitrogen is---- (a) 5 (b) 7 (c) 9 (d) 10

Water soluble metallic oxides and hydroxides only are (a) Bases (b) Strong bases (c) Weak bases (d) Alkalis

Carbon dioxide gas should be collected by the (a) Downward displacement of water (b) Upward displacement of water (c) Right side displacement of water (d) Left side displacement of water

Copper is a (a) Good conductor of heat and electricity (b) Bad conductor of heat and electricity (c) Neutral conductor to heat and electricity (d) None of the above

Which virus causes common cold? (a) HIV (b) Retro (c) Rhino (d) Paramyxo

Mushroom is a ---- fungus. (a) Vascular (b) Chlorophyll bearing (c) Saprophytic (d) woody

In mitosis, which phase is called migratory phase? (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase