11. With respect to environment science, full form of SPM is;
A. Suspended Partial Matter.
B. Suspended Particulate Matter.
C. Suspended Pollutant Matter.
D. None of these.
Answer with Explanation
Answer: Option B
Explanation:
Suspended particulate matter (SPM) are microscopic solids or liquids that contain organic and inorganic particles like; dust, pollen, smoke or liquid droplets. These particles may be dispersed through the air from combustion processes, industrial activities or natural sources.
More Source : Ministry of Environment
12. In an ecosystem, bacteria are the
A. Producers.
B. Primary consumers.
C. Secondary consumers.
D. Decomposers.
Answer with Explanation
Answer: Option D
Explanation:
Decomposers are organisms that break down dead plants & animals and also break down waste of other organisms. Some of the common decomposers are bacteria, worms, slugs, snails, and fungi.
13. Deforestation generally decreases;
A. Rainfall.
B. Global warming.
C. Soil erosion.
D. Drought.
Answer with Explanation
Answer: Option A
Explanation:
No explanation for this question.
14. Which one of the following are non-renewable resources?
A. Animals.
B. Forests.
C. Fossil fuels.
D. All of these.
Answer with Explanation
Answer: Option C
Explanation:
No explanation for this question.
15. Biosphere reserve project was initiated in India during;
A. 1986
B. 1984
C. 1989
D. 1985
Answer with Explanation
Answer: Option A
Explanation:
No explanation for this question.
16. Sound becomes hazardous noise pollution at decibels-
A. Above 50.
B. Above 80.
C. Above 100.
D. Above 130.
Answer with Explanation
Answer: Option B
Explanation:
No explanation for this question.
17. Phytoplanktons are the members of;
A. Grassland ecosystem.
B. Desert ecosystem.
C. Forest ecosystem.
D. Aquatic ecosystem.
Answer with Explanation
Answer: Option D
Explanation:
No explanation for this question.
18. Syringes are examples of
A. Industrial wastes.
B. Biomedical wastes.
C. Domestic wastes.
D. Radioactive wastes.
Answer with Explanation
Answer: Option B
Explanation:
No explanation for this question.
19. Silviculture is the management of-
A. Rivers.
B. Lakes.
C. Hills.
D. Forests.
Answer with Explanation
Answer: Option D
Explanation:
No explanation for this question.
20. Minamata diseasse are first detected in;
A. Mexico.
B. Japan.
C. USA.
D. India.
Answer with Explanation
Answer: Option B
Explanation:
No explanation for this question.
