1. In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following:

1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid

Select the correct answer using the code below

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

2. Water can dissolve more substances than any other liquid because.

1. It is dipolar in nature.
2. It is a good conductor of heat.
3. It has high value of specific heat.
4. It is an oxide of hydrogen.

3. The term ‘ACE2’ is talked about in the context of

1. genes introduced in the genetically modified plants.
2. development of India’s own satellite navigation system.
3. radio collars for wildlife tracking.
4. spread of viral diseases.

4. With the reference to recent developments regarding ‘Recombinant Vector Vaccines’, consider the following statements:

1. Genetic engineering is applied in the development of these vaccines.
2. Bacteria and Viruses are used as vectors.

Which of the statements given above is/are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

5. In the context of hereditary diseases, consider the following statements:

1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg.
2. A child inherits mitochondrial diseases entirely from mother and not from father.

Which of the statements given above is/are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

6. Consider the following:

1. Bacteria
2. Fungi
3. Virus

Which of the above can be cultured in an artificial / synthetic medium?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

7. Consider the following statements:

1. Adeno viruses have single-stranded DNA genomes whereas retro viruses have double-stranded DNA genomes.
2. Common cold is sometimes caused by an adenovirus whereas AIDS is caused by a retrovirus.

Which of the following statements given above is/are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

8. Consider the following kinds of organisms:

1. Copepods
2. Cyanobacteria
3. Diatoms
4. Foraminifera

Which of the above are primary producers in the food chains od oceans?

1. 1 and 2
2. 2 and 3
3. 3 and 4
4. 1 and 4

9. Consider the following animals:

1. Hedgehog
2. Marmot
3. Pangolin

To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?

1. 1 and 2
2. 2 only
3. 3 only
4. 1 and 3

10. Which one of the following is a filter feeder?

1. Catfish
2. Octopus
3. Oyster
4. Pelican

11. Which of the following are detritivores?

1. Earthworms
2. Jellyfish
3. Millipedes
4. Seahorse
5. Woodlice

Select the correct answer using the code given below

1. 1, 2 and 4 only
2. 2, 3, 4 and 4 only
3. 1, 3 and 5 only
4. 1, 2, 3, 4 and 5

12. Which of the following have species that can be establish a symbiotic relationship with other organisms?

1. Cnidarians
2. Fungi
3. Protozoa

Select the correct answer using the code given below:

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

13. At the national level, which ministry is the nodal agency to ensure effective implementation of the Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2005?

1. Ministry of Environment, Forest and Climate Change
2. Ministry of Panchayat Ray
3. Ministry of Rural Development
4. Ministry of Tribal Affairs

14. “Triclosan” considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

1. Food Preservatives
2. Fruit ripening substances
3. reused plastic containers
4. Toiletries

15. The vegetation of savannah consists of grassland with scattered small trees. The forest development in such areas is generially kept in check by one or more or a combination of some conditions.
Which of the following are such conditions?

1. Burrowing animals and termites
2. Fire
3. Grazing herbivores
4. Seasonal rainfall
5. Soil properties

Select the correct answer using the code given below

1. 1 and 2
2. 4 and 5
3. 2, 3 and 4
4. 1, 3 and 5

16. In the context of India’s preparation for Climate-smart Agriculture, consider the following statements:

1. The ‘Climate-Smart Village’ approach in India is a part of a project led by climate change, Agriculture and food security (CCAFS), an international research programme.
2. The project of CCAFS is carried out under Consuktative Group on International Agricultural Research (CGIAR) headquartered in Finance.
3. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in India is one of the CGIAR’s research centers.

Which of the Statements given above are correct?

1. 1 & 2 only
2. 2 & 3 only
3. 1 & 3 only
4. 1, 2 & 3

17. “Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously, by climbing the trees or growing as epiphytes, rooted on the upper branches of trees.” This is the most likely descriptions of

1. Corniferous forest
2. Dry deciduous forest
3. Mangrove forest
4. Tropical rain forest

18. Magnetite particles, suspected to cause neurodegenerative problems are generated as environmental pollutants from which of the following?

1. Brakes of motor vehicles
2. Engines of motor vehicles
3. Microwave stoves within homes
4. Power plants
5. Telephone lines

Select the correct answer using the code given below

1. 1, 2, 3 and 5 only
2. 1, 2 and 4 only
3. 3, 4 and 5 only
4. 1, 2, 3, 4 and 5

19. The “Common Carbon Metric” supported by UNEP, has been developed for

1. Assessing the carbon footprint of building operations around the world.
2. Enabling commercial farming entities around the world to enter carbon emmission trading.
3. Enabling governments to assess the overall carbon footprint caused by their countries.
4. Assessing the overall carbon foot-print caused by the us of fossil fuels by the world in a unit time.

20. “R2 Code of Practices” constitute a tool available for promoting the adoption of

1. Environmentally responsible practices in the electronics recycling industry.
2. Ecological management of “Wetlands of International Importance” under the Ramsar Convention.
3. Sustainable practices in the cultivation of agricultural crops in degraded lands.
4. “Environmental Impact Assessment” in the exploitation of natural resources.

21. Why there is a concern about copper smelting plants?

1. They may release lethal quantities of carbon monoxide into the environment.
2. The copper slag can cause the leaching pf some heavy metals into the environment.
3. They may release sulphur dioxide as a pollutant.

Select the correct answer using the code given below:

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

22. With reference to furnance oil, consider the following statements:

1. It is a product of oil refineries
2. Some industries use it to generate power
3. Its use causes sulphur emissions into the environment.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

23. What is a blue carbon?

1. Carbon captured by oceans and coastal ecosystems.
2. Carbon sequestered in forest biomass and agricultural soils.
3. Carbon contained in petroleum and natural gas.
4. Carbon present in the atmosphere.

24. Water can dissolve more substances than any other liquid because.

1. It is dipolar in nature.
2. It is a good conductor of heat.
3. It has high value of specific heat.
4. It is an oxide of hydrogen.

25. With reference to street lighting, how do sodium lamps differ from LED lamps.

1. Sodium lamps produce lights in 360 degrees but it is not so in the case od LED lamps.
2. As street-lights, sodium lamps have longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.

Select the correct answer using the code given below:

1. 3 only
2. 2 only
3. 1 and 3 only
4. 1, 2 and 3

26. Which one of the following is used in preparing a natural mosquito repellent?

1. Congress grass
2. Elephant grass
3. Lemon grass
4. Nut grass