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Problem Solving Assessment(PSA)
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Question-1
Which of the following processes is involved in the water cycle?
(A)
Evaporation, hibernation and dehydration
(B)
Evaporation, condensation, and precipitation
(C)
Padding, swimming and drinking
(D)
Bathing, sunning and drinking
Question-2
The process of photosynthesis and respiration cause the cycling of which element in the environment?
(A)
Carbon
(B)
Water
(C)
Nitrogen
(D)
Hydrogen
Question-3
Which of the following are floating ocean plants or animals?
(A)
Plankton
(B)
Benthes
(C)
Terrenus
(D)
Microbes
Question-4
What does the term 'NPK' mean?
(A)
Nitrate, Potash and Calcium
(B)
Nitrogen, Phosphate and Chromium
(C)
Nitrogen, Phosphorus and Potasium
(D)
Nitrate, Protein and Vitamins
Question-5
What compounds are identified as contributing to acid rain?
(A)
Carbondioxide
(B)
Sulphur oxides
(C)
Mercury oxides
(D)
Phosphates
Question-6
What is the main source of water pollution in India?
(A)
Municipal sewage
(B)
Domestic discharge
(C)
Industrial discharge
(D)
Both 1 and 3
Question-7
Bacterium drives the cycle of which of the following elements?
(A)
Carbon
(B)
Nitrogen
(C)
Oxygen
(D)
Energy
Question-8
Which of the following indications of the health of a water body is the most widely accepted means of measuring how polluting an effluent is?
(A)
COD
(B)
BOD
(C)
Coliform content
(D)
DO
Question-9
Water that moves over the ground into lakes and rivers is called:
(A)
Ground water
(B)
Water table
(C)
Run off water
(D)
Water cycle
Question-10
Which sector is the single largest consumer of fresh water in India?
(A)
Agriculture
(B)
Industry
(C)
Domestic
(D)
Power
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Std 9
CBSE
Practice in Related Chapters
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