1. With reference to radioi-sotope thermoelectric generators(RTGs), consider the following statements:

1. RTGs are miniature fission reactors.
2. RTGs are used for powering the onboard systems of spacecrafts.
3. RTGs can use Plutonium-238, which is a by-product of weapons development.

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

2. Consider the following:

1. Battery storage
2. Biomass generators
3. Fuel cells
4. Rooftop solar photovaltaic units

How many of the above are considered “Distributed Energy Resources”?

1. Only one
2. Only two
3. Only three
4. All four

3. Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?

1. Nitric oxide
2. Nitrous oxide
3. Nitrogen dioxide
4. Nitrogen pentoxide

4. Consider the following:

1. Carabid beetles
2. Centipedes
3. Flies
4. Termites
5. Wasps

Parasitoid species are found in how many of the above kind of organisms?

1. Only one
2. Only three
3. Only four
4. All five

5. The organisms “Cicada, Froghopper and Pond skater” are:

1. Birds
2. Fish
3. Insects
4. Reptiles

6. “Membrane Bioreactors” are often discussed in the context of:

1. Assisted reproductive technologies
2. Drug delivery nanotechnologies
3. Vaccine production technologies
4. Wastewater treatment technologies

7. With reference to perfluoroalkyl and polyfluoroalkyl substance (PFAS) that are used in making many consumer products, consider the following statements:

1. PFAS are found to be widespread in drinking water, food and food packaging materials.
2. PFAS are not easily degraded in the environment.
3. Persistent exposure to PFAS can lead to bioaccumulation in animal bodies.

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

8. Consider the following statements?

statement-I: The Indian Flying Fox is placed under the “vermin” category in the Wild life(Protection) Act, 1992.

Statement-II: The Indian Flying Fox feeds on the above statements?

Which one of the following is correct in respect of the above statements?

1. Statement-I and Statement-II are correct and Statement-II explains Statement-I
2. Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
3. Statement-I is correct, but Statement-II is incorrect
4. Statement-I is incorrect, but Statement-II is correct

9. The organisms “Cicada, Froghopper and Pond skater” are:

1. Birds
2. Fish
3. Insects
4. Reptiles

10. Consider the following statement:

Statement-I: Many chewing gums found in the market are considered a source of environmental pollution.

Statement-II: Many chewing gums contain plastic as gum base.

Which one of the following is correct in respect of the above statements?

1. Statement-I and Statement-II are correct and Statement-II explains Statement-I
2. Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
3. Statement-I is correct, but Statement-II is incorrect
4. Statement-I is incorrect, but Statement-II is correct

11. Consider the following statements:

1. Lions do not have a particular breeding season.
2. Unlike most other big cats, cheetas do not roar.
3. Unlike male lions, male leopards do not proclaim their territory by scent marking.

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

12. Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?

1. Fig
2. Mahua
3. Sandalwood
4. Silk Cotton

13. Consider the following:

1. Butterflies
2. Fish
3. Frogs

How many of the above have poisonous species among them?

1. Only one
2. Only two
3. All three
4. None

14. According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?

1. Locomotives using fossil fuels
2. Ships using fossil fuels
3. Extraction of metals from ores
4. Power plants using fossil fuels

15. Consider the following aircraft:

1. Rafael
2. Mig-29
3. Tejas MK-I

How many of the above are considered fifth generation fighter aircraft?

1. Only one
2. Only two
3. All three
4. None

16. Which one of the following words/phrases is most appropriately used to denote “an interoperable network of 3D virtual worlds that can be accessed simultaneously by millions of users, who can exert property rights over virtual items”?

1. Big data analytics
2. Cryptography
3. Metaverse
4. Virtual Matrix

17. Consider the following statements:

Statement-I: Giant stars live much longer than dwarf stars.

Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

Which one of the following is correct in respect of the above statements?

1. Statement-I and Statement-II are correct and Statement-II explains Statement-I
2. Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
3. Statement-I is correct, but Statement-II is incorrect
4. Statement-I is incorrect, but Statement-II is correct

18. Consider the following activities:

1. Identification of narcotics on passengers at airports or in aircraft
2. Monitoring of precipitation
3. Tracking the migration of animals

In how many of the above activities can the radars be used?

1. Only one
2. Only two
3. All three
4. None

19. Which one of the following is the exhaust pipe emissions from Fuel Cell Electric Vehicles, powered by hydrogen?

1. Hydrogen Peroxide
2. Hydronium
3. Oxygen
4. Water Vapour

20. Recently, the term “pumped-storage hydropower” is actually and appropriately discussed in the context of which one of the following?

1. Irrigation of terraced crop fields
2. Lift irrigation of ceral crops
3. Long duration energy storage
4. Rainwater harvesting system