Full Analysis & Solutions for the JK-SET Environmental Science Test (07 Sept 2025)

Are you an aspirant for the upcoming JKPSC (10+2) Level Exam? If so, you know that every bit of authentic practice is gold dust. The recently conducted JK-SET Examination for Environmental Science on 7th September 2025 is the perfect mirror to understand the expected pattern, difficulty level, and important topics for your JKPSC exam.

This post provides a comprehensive overview of that exam, complete with a detailed answer key. Solving this paper will not only test your current preparation but also fine-tune your strategy for the final sprint.

JK-SET Exam Paper 07.09.2025

20 Questions. 15 Minutes.
Complete Paper available on TES Academy App

1 / 20

1. ENSO stands for:

A. El Niño Surface Oscillation

B. El Niño Southern Oscillation

C. El Niño Southern Ocean

D. El Niño Surfing Organization

2 / 20

2. Which one of the following is the largest nekton?

A. Comb Jelly

B. Sowbug

C. Copepod

D. Baleen Whale

3 / 20

3. Which kind of pyramid can never be inverted in any stable ecosystem?

A. Biomass, Energy and Number

B. Biomass

C. Number

D. Energy

4 / 20

4. Landslide is downslope movement of rock and soil mass under the influence of:

A. Water

B. Gravity

C. Slope

D. Soil

5 / 20

5. Simpson’s Index is a useful tool for measuring:

A. Soil quality

B. Air pollution

C. Water quality

D. Species diversity

6 / 20

6. Under ideal conditions, the COD:TOC ratio for sewage containing only organic matter is ______.

A. 0.375

B. 0.5

C. 1.66

D. 2.66

7 / 20

7. In an ecosystem, the flow of energy is:

A. Bidirectional

B. Unidirectional

C. Multidirectional

D. Cyclic

8 / 20

8. Which one of the cities was declared cleanest in the Swachh Sarvekshan 2021?

A. Jammu

B. Jaipur

C. Dehradun

D. Indore

9 / 20

9. Geosynchronous satellite means:

A. An orbital rotation similar to Sun

B. An orbital rotation similar to Moon

C. An orbital period same as the Earth’s rotation period

D. An orbital period is different from Earth’s rotation

10 / 20

10. Trophic levels are formed by:

A. Only plants

B. Only animals

C. Food chain linked organisms

D. Only carnivores

11 / 20

11. Which of the following has maximum penetration power?

A. Alpha particle

B. Alpha particle and Beta particle

C. Beta particle

D. Gamma rays

12 / 20

12. Spatial resolution of Landsat 1 TM sensor is for visible, near-infrared, and mid-infrared wavelengths:

A. 30 m

B. 5 m

C. 0.61 m

D. 23.5 m

13 / 20

13. Match column I with column II and select correct answer using answer codes:

Correct Match for PQRS

A. 4132

B. 3412

C. 4123

D. 2341

14 / 20

14. Spatial resolution of IRS 1D LISS III image is:

A. 30 m

B. 80 m

C. 1 m

D. 23.5 m

15 / 20

15. The first man-made ecosystems are:

A. Water Tanks

B. Agroecosystems

C. Orchards

D. Villages

16 / 20

16. Flood hydrograph is the expression of:

A. Time and discharge relationship of flood water

B. Flood duration

C. Graph of flood water

D. Flood level in an area

17 / 20

17. Assertion (a): Temperature in stratosphere increases with increase in altitude
Reason (r): Photodissociation of O₂ in stratosphere makes the lapse rate positive

A. (a) is false and (r) is true

B. Both (a) and (r) are true, and (r) is the correct explanation of (a)

C. (a) is true and (r) is false

D. Both (a) and (r) are true, and (r) is not the correct explanation of (a)

18 / 20

18. Chemosynthetic sulphur bacteria form the food base in:

A. Salt marshes

B. Estuaries

C. Coral reefs

D. Hydrothermal vents

19 / 20

19. The single most significant factor to limit plant distribution and abundance is:

A. Humidity

B. Light

C. Rainfall

D. Temperature

20 / 20

20. In India, avalanches are mainly reported from the hilly region of the:

A. Himalaya

B. Eastern Ghat

C. Aravalli mountains

D. Western Ghat

Your score is

The average score is 72%

Click Here to complete analysis for this paper & Enroll in the JKPSC (10+2) Environmental Science Crash Course NOW!

Author

kanwar

Kanwar Bhan Godara UGC NET JRF Environmental Science
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Full Analysis & Solutions for the JK-SET Environmental Science Test (07 Sept 2025)

Click Here to complete analysis for this paper & Enroll in the JKPSC (10+2) Environmental Science Crash Course NOW!

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