Chapter 6 · 7 hours
Nature and Environment
SEE past exam questions
Past questions and answers
59 questions set from this chapter, 1 of them more than once. Most repeated first.
- Asked 2 times
- 2082 Chaitra · Sudurpashchim · 2 marks
- 2082 Chaitra · Koshi · 1 mark
Write any two uses of the given organism.
Figure: Photo of a caterpillar fungus (Yarsagumba / Ophiocordyceps sinensis), a dark brown caterpillar with a thin stalk growing from its head.
Answer
The organism is Yarsagumba (caterpillar fungus). Two uses:
- It is used to make medicines that increase energy, stamina and strength and treat weakness and lung and kidney problems.
- Its collection and sale earn a high income for local people and the country (source of foreign currency).
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- 2080 Chaitra · Bagmati · 2 marks
Mention any two artificial processes that cause climate change.
Similar questions: Natural causes of climate change (2080 Chaitra · Sudurpashchim)
Answer
Two artificial (human) causes:
- Burning of fossil fuels in vehicles and industries, which releases carbon dioxide.
- Deforestation, which reduces the CO absorbed by plants.
(Also: excess use of chemical fertilizers, CFC release.)
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- 2080 Chaitra · Sudurpashchim · 2 marks
Mention any two natural processes that cause climate change.
Similar questions: Artificial causes of climate change (2080 Chaitra · Bagmati)
Answer
Two natural processes:
- Volcanic eruptions
- Changes in solar radiation/sun's energy (also ocean currents, natural forest fires).
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- CDC model paper 2080, Science and Technology · 1 mark
- 2081 Chaitra · Karnali · 1 mark
Cordyceps formed by the fusion of caterpillar and fungi is shown in the figure. What is the interrelation between caterpillar and fungus in this process?
(a) Symbiotic
(b) Parasitic
(c) Saprotrophic
(d) Commensalism
Figure: Picture of a caterpillar-fungus (Cordyceps) with a thin fungal stalk growing out of a dead caterpillar buried in soil.
Answer
(b) Parasitic. The fungus (Ophiocordyceps) infects the caterpillar, feeds on its body and finally kills it, then grows a stalk out of the dead host. The fungus benefits and the caterpillar is harmed, which is parasitism.
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- SEE 2080 model question, Set 1, Science and Technology · 2 marks
- 2082 Asar · Grade increment · 2 marks
Number of red panda is decreasing in Nepal. What measures can be done to protect the Panda? Write any two measures.
Answer
Any two measures:
- Conserve and protect its habitat (bamboo forests) by stopping deforestation and encroachment, and by establishing protected areas.
- Stop illegal hunting and trade through strict laws and patrolling.
- Create public awareness among local people and involve them in conservation.
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- 2080 Chaitra · Bagmati · 1 mark
What is the main work needed to do for the conservation of snow leopard?
Answer
Protect its habitat and stop illegal hunting (poaching) for its skin and bones, with awareness among local people.
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- 2080 Grade increment · 2 marks
Write the name of any two traditionally used medicinal plants found in Nepal.
Answer
Two traditionally used medicinal plants of Nepal: Neem and Tulasi (Holy basil). (Others: Aloe vera, Turmeric, Bojho, Asiatic pennywort.)
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- 2080 Chaitra · Gandaki · 1 mark
Which of the following is natural reason of climate change?
(a) Industrialization
(b) Deforestation
(c) Volcanic Eruption
(d) Burning of fossil fuels
Answer
(c) Volcanic eruption. It is a natural process releasing gases and ash into the atmosphere. Industrialization, deforestation and burning fossil fuels are human activities.
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- 2080 Chaitra · Gandaki · 1 mark
Which of the following is the effect of climate change?
(a) Decrease in sea level
(b) Positive effect in human health
(c) Change in season
(d) Increase in biodiversity
Answer
(c) Change in season. Climate change alters temperature and rainfall patterns, so seasons shift. Sea level rises (not decreases), health suffers, and biodiversity decreases.
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- 2080 Chaitra · Karnali · 2 marks
What is medicinal plant? Write any one medicinal plant found in Himalayan region.
Answer
A medicinal plant is a plant whose parts (root, stem, leaf, flower, fruit, etc.) contain chemical substances used to prevent or cure diseases.
A Himalayan example: Yarsagumba (caterpillar fungus) (or Panchaule/Jatamansi).
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- 2080 Chaitra · Koshi · 1 mark
Villagers of a village are being troubled by rats and they conducted a campaign to kill them. What could be the consequence of it?
(i) Ecosystem will be balanced.
(ii) Number of snakes will be decreased.
(iii) Number of snakes will be increased.
(iv) Number of insects will be increased.
Answer
The correct consequence is (ii) Number of snakes will be decreased. Rats are the food of snakes (a food chain), so killing rats leaves snakes with less food and their number falls. The ecosystem becomes unbalanced, so (i) is wrong; insects may increase, but the direct effect is on snakes.
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- 2080 Chaitra · Koshi · 1 mark
Which gas is the main cause of climate change?
Answer
Carbon dioxide (CO), a greenhouse gas.
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- 2080 Chaitra · Koshi · 2 marks
We should use and store pesticides carefully. Write two reason behind this.
Answer
Two reasons:
- Pesticides are poisonous; careless use or storage can harm humans and animals (children may swallow them, causing poisoning or death).
- They pollute air, water and soil and kill useful organisms such as bees and earthworms.
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- 2080 Chaitra · Koshi · 2 marks
Pollutants of a city are shown in the given diagram.
(i) Which pollutants of them is non biodegradable?
(ii) How can we manage such pollutants?
Figure: Photograph of a heap of solid waste (mixed garbage such as plastic, paper, metal and other litter).
Answer
(i) Non-biodegradable pollutants are plastic, polythene, metal and glass, which microorganisms cannot decompose.
(ii) Management: reduce, reuse and recycle them; separate waste at source; ban or limit polythene; dispose of the remainder in a sanitary landfill.
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- 2080 Chaitra · Lumbini · 1 mark
Which medicinal plant can be used for the treatment of skin diseases by reducing the blood issues?
(a) Neem
(b) Heart leaved moonseed
(c) Asiatic pennywort
(d) Holy basil
Answer
(a) Neem. Neem leaves and bark purify the blood and are used to treat skin diseases. Holy basil and the others are used mainly for cold, fever and other ailments.
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- 2080 Chaitra · Lumbini · 2 marks
Mention any two causes of climate change.
Answer
Two causes:
- Burning of fossil fuels, which adds carbon dioxide (greenhouse gas) to the air.
- Deforestation (also volcanic eruptions, a natural cause).
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- 2080 Chaitra · Madhesh · 1 mark
Why is jackal considered as secondary consumer?
Answer
Because the jackal feeds on primary consumers (herbivores such as rats, rabbits), it is at the third trophic level, so it is a secondary consumer.
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- 2080 Chaitra · Madhesh · 2 marks
By the apiculture how is farmer benefited? Write in two points.
Answer
Two benefits to farmers:
- Honey and bees wax can be sold, so it gives extra income and employment.
- Bees pollinate crops and fruit trees, increasing production.
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- 2080 Chaitra · Madhesh · 2 marks
If a person is suffering with skin diseases due to blood issue, which medicinal plant will you suggest to use to cure it? What precautions should be taken while using medicinal herb?
Answer
Herb: Neem (it purifies blood and cures skin diseases).
Precautions: Identify the herb correctly and use the right part and amount, preferably under the advice of an expert/Vaidya; avoid overuse as some herbs are harmful in excess; collect without destroying the plant.
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- 2080 Chaitra · Sudurpashchim · 1 mark
What should be done mainly for the conservation of one horned rhinoceros?
Answer
Protect its habitat (grasslands and forest) and prevent poaching for its horn.
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- 2081 Chaitra · Bagmati · 2 marks
Mention any two effects of climate change.
Answer
Two effects:
- Rise in global temperature, melting of glaciers and rise in sea level.
- Irregular rainfall, causing floods and droughts, and loss of biodiversity.
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- 2081 Chaitra · Bagmati · 2 marks
Although the use of pesticides is considered a major concern for agriculture, write two reasons why its use continues.
Answer
Two reasons:
- Pesticides kill pests and weeds quickly, so crop production is protected and increased to feed the growing population.
- They are cheap, easily available and quick to use compared with other methods, and farmers lack awareness or alternatives (such as organic farming).
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- 2081 Chaitra · Gandaki · 2 marks
Climate change is the cause of the extinction of animals. Give other two possible causes.
Answer
Two other causes:
- Habitat destruction (deforestation, encroachment).
- Illegal hunting and poaching (also pollution and pesticides).
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- 2081 Chaitra · Gandaki · 2 marks
"There are plenty of possibilities of medicinal plant in Nepal. It is essential to aware the local people in order to protect and use of such medicinal plant." Give any two arguments to support this statement.
Answer
Two arguments:
- People unaware of the value of herbs destroy or over-collect them; awareness helps conserve them and prevents their extinction.
- Aware people can cultivate, process and sell herbs, giving them income and employment, and use them for local health care cheaply.
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- 2081 Chaitra · Karnali · 2 marks
Write the name of plant which is used in the treatment of burn. Write one other use of this plant.
Answer
The plant is Aloe vera (Ghiu kumari). It is used to treat burns. Another use: it is used for skin care, as a laxative and for stomach disorders.
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- 2081 Chaitra · Koshi · 1 mark
Which of the following plant is used for curing stomach and skin diseases?
(a) Aloe-vera
(b) Yarsagumba
(c) Bojo
(d) Tulasi
Answer
(a) Aloe-vera. Its gel is used for stomach disorders and skin diseases/burns. Yarsagumba gives strength, Bojho helps cough and memory, Tulasi treats cold.
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- 2081 Chaitra · Koshi · 2 marks
Write any two uses of the medicinal plant shown in the figure.
Figure: A black-and-white photograph of a medicinal plant with a few white flowers/blossoms among leaves.
Answer
The plant in the figure is Holy basil (Tulasi), a medicinal plant. Two uses:
- Its leaves are used to cure cough, cold and fever.
- It is used for stomach problems and as an antiseptic, and is also worshipped.
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- 2081 Chaitra · Lumbini · 1 mark
Mention any one suggestion to preserve endangered animals.
Answer
Conserve their natural habitat by establishing national parks/reserves and stopping illegal hunting.
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- 2081 Chaitra · Lumbini · 2 marks
Mention any two suggestion for maximum use of medicinal plants in local level.
Answer
Two suggestions:
- Provide training and awareness to local people on identification, cultivation and use of medicinal plants.
- Establish local herb-processing industries and markets, and encourage cultivation of herbs in home gardens.
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- 2081 Chaitra · Madhesh · 1 mark
Now a days, agricultural production has been affected by low rainfall at times and heavy rainfall at other times. Which of the following is the main reason for this?
(a) volcanic eruption
(b) flood and landslide
(c) climate change
(d) decrease in endangered animals
Answer
(c) Climate change. It disturbs rainfall patterns, causing drought at times and heavy rainfall at others, which affects agriculture. Volcanic eruptions and floods are not the main cause of irregular seasonal rainfall.
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- 2081 Chaitra · Madhesh · 2 marks
Now a days, mountains are turning into black rock due to melting of snow. How can we control this process? Write any two ways.
Answer
Two ways:
- Reduce emission of greenhouse gases by using less fossil fuel and using clean energy (solar, hydro).
- Plant more trees and stop deforestation to reduce carbon dioxide and global warming.
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- 2081 Chaitra · Sudurpashchim · 1 mark
Volcanic eruption (A) and over use of fossils fuel (B) are two causes of climate change. Which of the following alternative is correct about these?
(i) A is a natural cause and B is a human cause
(ii) A is a human cause and B is a natural cause
(iii) Both A and B are human causes
(iv) Both A and B are natural causes
Answer
(i) A is a natural cause and B is a human cause. Volcanic eruption happens in nature, while over use of fossil fuels is done by humans.
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- 2081 Chaitra · Sudurpashchim · 2 marks
Write one use each of Turmeric and Asiatic Pennywort.
Answer
- Turmeric: used as an antiseptic for cuts and wounds (and as a spice).
- Asiatic pennywort (Ghodtapre): used to improve memory and to treat skin diseases and stomach ulcers.
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- 2082 Chaitra · Bagmati · 1 mark
Which of the following is a group of medicinal herbs found in Nepal?
(i) Neem, Holy basil, Corn
(ii) Caterpillar fungus, Aloevera, Millet
(iii) Holy basil, Caterpillar fungus, Paddy
(iv) Malabar nut, Calamus, Caterpillar fungus
Answer
(iv) Malabar nut (Asuro), Calamus and Caterpillar fungus are all medicinal herbs. Corn, millet and paddy are cereal crops.
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- 2082 Chaitra · Bagmati · 1 mark
Which one of the following is the cause of climate change?
(i) Burning of fossil fuels
(ii) Afforestation
(iii) Noise pollution
(iv) Use of organic fertilizer
Answer
(i) Burning of fossil fuels. It releases carbon dioxide and other greenhouse gases, increasing global warming. Afforestation and organic fertilizer reduce it; noise pollution does not cause it.
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- 2082 Chaitra · Bagmati · 1 mark
Give any one reason of declining animals like tiger, rhino, red panda etc. in Nepal in recent years?
Answer
Illegal hunting (poaching) for skin, horn and bones, and loss of habitat.
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- 2082 Asar · Grade increment · 1 mark
Which of the following insecticides affects in Reproductive health?
(a) BHC
(b) dimethomorph
(c) carbendazin
(d) sectin
Answer
(a) BHC. It is an organochlorine insecticide, which is persistent, accumulates in the body and affects reproductive health. The others are fungicides/other pesticides.
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- 2082 Chaitra · Karnali · 1 mark
Write any one measure to conserve rare birds in Nepal.
Answer
Protect their habitat/nesting sites and prevent illegal hunting.
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- 2082 Chaitra · Karnali · 2 marks
Write two main reasons for the gradual increase in the average temperature of the environment.
Answer
Two reasons:
- Increase in greenhouse gases (CO, methane) from burning fossil fuels, causing global warming.
- Deforestation, which reduces the absorption of carbon dioxide.
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- 2082 Chaitra · Koshi · 1 mark
How does plantation of trees help reduce the effect of climate change?
(a) By increasing oxygen level in the atmosphere
(b) By reducing the amount of carbon dioxide through photosynthesis
(c) By lowering the temperature of the environment.
(d) By making a lot of rainfall
Answer
(b) By reducing the amount of carbon dioxide through photosynthesis. Trees absorb CO, a greenhouse gas, which lessens global warming.
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- 2082 Chaitra · Koshi · 1 mark
Write any one difference between rare and endangered species?
Answer
Rare species have a small population but are not yet in immediate danger, while endangered species are in immediate danger of extinction.
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- 2082 Chaitra · Lumbini · 1 mark
Which of the following reptiles is NOT included in the list of protected animals of Nepal?
(a) Gharial crocodile
(b) Python
(c) Golden monitor lizard
(d) Turtle
Answer
(d) Turtle. Only three reptiles are listed as protected in Nepal under the National Parks and Wildlife Conservation Act, 2029 (1973): the gharial crocodile, the python and the golden monitor lizard. The turtle is not on the protected list.
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- 2082 Chaitra · Lumbini · 2 marks
Your friend needs a strength enhancing medicinal herb. In this situation, which herb would you advise your friend to use? Write down any one method of conservation this medicinal herb.
Answer
I would advise Yarsagumba (caterpillar fungus), which increases energy and strength.
Conservation method: collect it only in the proper season in limited amounts, and protect its alpine habitat (avoid over-collection).
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- 2082 Chaitra · Madhesh · 2 marks
Why does climate change causes increase in sea level? Write in any two points.
Answer
Two points:
- Climate change raises temperature (global warming), which melts glaciers and polar ice; the melt water flows to the sea and raises its level.
- Warming expands the sea water (thermal expansion), increasing the volume.
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- 2082 Chaitra · Sudurpashchim · 1 mark
Choose the correct conclusion based on the given fact and statements.
Fact: Climate change refers to long-term variations in temperature and precipitation patterns.
Statement 1: This can lead to rising sea levels due to melting of ice.
Statement 2: It makes the Earth move farther away from the Sun every year.
(i) Fact & both statements are correct.
(ii) Fact is incorrect but both the statements are correct.
(iii) Fact and statement 1 are correct but statement 2 is incorrect.
(iv) Fact and statement 2 are correct but statement 1 is incorrect.
Answer
(iii) Fact and statement 1 are correct but statement 2 is incorrect. Climate change is a long-term change in temperature and rainfall, and melting ice raises sea level. The Earth's distance from the Sun does not increase because of it.
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- 2079 Chaitra · Madhesh · 2 marks
'Soil is polluted by increased industrialization and urbanization.' Clarify this statement by any two reasons.
Answer
Two reasons:
- Industries release solid wastes, chemicals, heavy metals and sludge that are dumped on land and poison the soil.
- Growing urban areas produce huge amounts of domestic waste, plastics and sewage. When dumped or left on land they spoil the soil, and acid rain from industrial gases also harms it.
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- 2079 Chaitra · Lumbini · 2 marks
Insecticides kill insects and help to increase the crop yield but environmentalists oppose the use of insecticides. Why? Give any two reasons.
Answer
Two reasons:
- Insecticides also kill useful insects such as bees and butterflies, and harm other organisms like birds and earthworms, which upsets the balance of nature.
- Their residues remain in soil, water and food and pass along the food chain (biomagnification), causing health problems like cancer and polluting the environment.
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- 2079 Chaitra · Lumbini · 2 marks
Consider that your house is near a sugar factory. What suggestions would you give to reduce the pollution caused by the industry? Write any two points mentioning the pollutants which cause different types of pollution.
Answer
Two suggestions:
- Treat the waste water containing molasses and organic wastes before releasing it into rivers, to control water pollution.
- Fit filters or chimneys with scrubbers to reduce the smoke, ash and gases (such as and ) from burning bagasse, to control air pollution.
Dumping of solid waste on land causes soil pollution, so it should be recycled or used as compost.
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- 2079 Chaitra · Karnali · 2 marks
Write a method to control each of the following pollutions.
(a) Air pollution
(b) Water pollution
Answer
(a) Air pollution: use clean fuels and plant more trees. Using filters on chimneys and vehicles, and regular vehicle maintenance, also helps.
(b) Water pollution: treat sewage and industrial waste water before releasing it into water bodies, and do not throw garbage into rivers and lakes.
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- 2079 Chaitra · Koshi · 2 marks
The ultimate cause of climate change is air pollution. Justify it in two points.
Answer
Two points:
- Air pollutants like , methane and CFCs trap heat in the atmosphere (the greenhouse effect), which raises the average temperature of the earth (global warming) and changes rainfall patterns.
- Gases like CFCs destroy the ozone layer, so more ultraviolet rays reach the earth, and gases like and cause acid rain. These disturb the climate and the environment.
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- 2079 Chaitra · Koshi · 3 marks
The temperature of the earth is increasing, production of crops is decreasing and skin cancer sufferers are increasing.
(a) What is the cause of the above findings?
(b) What is to be done to be safe from the above conditions?
(c) Write down one harmful effect of it on amphibians.
Answer
(a) The cause is ozone layer depletion together with global warming. CFCs and other pollutants destroy ozone, so more ultraviolet rays reach the earth (causing skin cancer and crop damage), and greenhouse gases raise the temperature.
(b) To be safe:
- Stop using CFC-producing goods such as old refrigerators and aerosols.
- Reduce burning of fossil fuels and plant more trees.
(c) UV radiation damages the eggs and skin of amphibians (like frogs), which reduces their number.
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- SEE 2080 model question, Set 2, Science and Technology · 1 mark
- SEE 2080 model question, Set 3, Science and Technology · 1 mark
Organic matter is considered as a major source of water pollution caused by wastes of food, animal and human excreta, garbage etc. Which of the following is a threat to aquatic life due to the excess of organic matter in water?
(a) The lack of space available to aquatic life
(b) Microorganisms consume dissolved oxygen to decompose organic matter.
(c) Organic matter is swallowed by small animals.
(d) Decomposition of organic matter increases the temperature of water.
Answer
(b) Microorganisms consume dissolved oxygen to decompose organic matter. Bacteria decomposing the excess organic waste use up the dissolved oxygen (BOD rises), so fish and other aquatic animals suffocate and die.
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- CDC model paper 2080, Science and Technology · 2 marks
Despite the medicinal herbs in our locality, we are dependent upon imported medicines. Write its one cause and what can we do to increase the use of medicinal herbs? Write a point.
Answer
Cause: Lack of knowledge and awareness about identifying, processing and using local medicinal herbs, and lack of processing industries.
What to do: Raise awareness and cultivate, process and promote medicinal herbs locally (e.g. by setting up herb-processing industries and giving training to farmers).
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- SEE 2080 model question, Set 1, Science and Technology · 1 mark
What is the main cause of increasing the level of ocean?
(a) Deforestation
(b) Heavy rainfall
(c) Flood and landslide
(d) Increase in the temperature of the earth.
Answer
(d) Increase in the temperature of the earth. Global warming melts glaciers and polar ice and expands sea water, so the ocean level rises.
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- SEE 2080 model question, Set 1, Science and Technology · 2 marks
Write any two roles of honey bee on ecosystem.
Answer
Two roles of honey bees in the ecosystem:
- They pollinate flowers while collecting nectar and pollen, which helps plants produce fruits and seeds.
- They help maintain biodiversity and are a food source/part of the food chain (also give honey and wax).
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- SEE 2080 model question, Set 2, Science and Technology · 1 mark
Which of the following groups is a group of endangered animals?
(a) Black buck, Wild yak, One horned Rhinoceros
(b) Brown bear, Bengal tiger, Jackal
(c) Red Panda, Pigmy hog, Deer
(d) Snow leopard, Asiatic wild elephant, Horse
Answer
(a) Black buck, Wild yak, One horned Rhinoceros. These animals have very small populations and are at risk of extinction, so they are listed as endangered. Deer, jackal and horse are not.
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- SEE 2080 model question, Set 2, Science and Technology · 2 marks
Write any two applications of Calamus in daily life.
Answer
Two uses of Calamus (Bojho):
- Its rhizome is used as medicine for cough, cold, sore throat, indigestion and memory problems.
- It is used to improve memory and speech, and in some places to repel insects/pests in stored grains.
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- SEE 2080 model question, Set 3, Science and Technology · 1 mark
Which part of calamus is used for medicinal purpose?
(a) Rhizome
(b) Leaf
(c) Fruits
(d) Flower
Answer
(a) Rhizome. The underground stem (rhizome) of calamus (Bojho) contains medicinal substances and is used to cure cough, sore throat and digestive problems.
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- SEE 2080 model question, Set 3, Science and Technology · 2 marks
Identify the medicinal plant shown in the figure and write its two uses.
Figure: Photograph of a medicinal plant root/rhizome partly dug out of the soil.
Answer
The plant shown is the rhizome of Turmeric (Besar/Haldi, Curcuma longa), a medicinal plant whose underground stem is dug out for use.
Two uses:
- Used as an antiseptic on cuts, wounds and burns, and to treat cough and cold.
- Used as a spice and colouring agent in cooking and in cosmetics.
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Questions from SEE 2082 Science and Technology, 1041 Koshi (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Madhesh (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Bagmati (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Gandaki (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Lumbini (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Karnali (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2082 Science and Technology, 1041 Sudurpashchim (Board exam, Chaitra 2082 (scanned PDF, bilingual)), SEE 2081 Science and Technology, 1041 Koshi (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Madhesh (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Bagmati (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Gandaki (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Lumbini (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Karnali (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2081 Science and Technology, 1041 Sudurpashchim (Board exam, Chaitra 2081 (PDF; official answer keys exist on the bidhyamandir page)), SEE 2080 Science and Technology, 1041 Koshi (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Madhesh (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Bagmati (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Gandaki (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Lumbini (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Karnali (Board exam, 2080 (scanned PDF, bilingual)), SEE 2080 Science and Technology, 1041 Sudurpashchim (Board exam, 2080 (scanned PDF, bilingual)), SEE 2082 Science and Technology, GI-1041 (grade increment) (Grade increment, Asar 2083 (PDF)), SEE 2081 Science and Technology, GI-1041 (grade increment) (Grade increment 2081 (8 page images); month taken from the August 2025 post, check), SEE 2080 Science and Technology, GI-1041 (grade increment) (Grade increment 2080 (PDF)), CDC model paper 2080, Science and Technology (with answer key) (Official CDC model paper, pages 2-9; answer key pages 10-15), SEE 2080 model question, Set 1, Science and Technology (Model paper Set 1 (typed PDF, publisher not named, no answers)), SEE 2080 model question, Set 2, Science and Technology (Model paper Set 2 (typed PDF, publisher not named, no answers)), SEE 2080 model question, Set 3, Science and Technology (Model paper Set 3 (typed PDF, publisher not named, no answers)), SEE 2079 Compulsory Science (RE-111) Koshi (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken), SEE 2079 Compulsory Science (RE-111) Madhesh (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken), SEE 2079 Compulsory Science (RE-111) Bagmati (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken), SEE 2079 Compulsory Science (RE-111) Gandaki (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken), SEE 2079 Compulsory Science (RE-111) Lumbini (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken), SEE 2079 Compulsory Science (RE-111) Karnali (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken) and SEE 2079 Compulsory Science (RE-111) Sudurpashchim (Board exam, Chaitra 2079 (2023), last year of the old course (scanned PDF, bilingual, 75 marks); only questions that fit the current outline were taken). Answers are written for this site; check them against your class notes.
Chapter titles and hours from the official syllabus ↗