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Problem Solving Assessment(PSA)
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Question-1
Which of the following processes fixes carbon in green plants as simple sugars?
(A)
Denitrification
(B)
Photosynthesis
(C)
Carbonation
(D)
Bacteria
Question-2
In terms of a food chain or food pyramid, organisms that trap energy, such as plants are known as:
(A)
Carnivores
(B)
Primary consumer
(C)
Herbivores
(D)
Producers
Question-3
Water harvesting is:
(A)
Collection of river water
(B)
Collection of rainwater in storage tanks or in the soil to recharge ground water
(C)
Harvesting of water from tube wells
(D)
All the above
Question-4
What compounds are identified as contributing to acid rain?
(A)
Carbondioxide
(B)
Sulphur oxides
(C)
Mercury oxides
(D)
Phosphates
Question-5
Which of the following pollutants is not present in the vehicular exhaust emissions?
(A)
Lead
(B)
Ammonia
(C)
Carbon monoxide
(D)
Particulate matter
Question-6
Which sector is the largest emitter of greenhouse gases in India?
(A)
Transport
(B)
Domestic
(C)
Agricultural
(D)
Electric power generation
Question-7
Which of the following lists contains all the ingredients and products of photosynthesis?
(A)
Carbondioxide, water, oxygen and carbohydrate
(B)
Phosphorus, nitrogen, water and carbondioxide and oxygen
(C)
Carbohydrates, water, nitrogen, and carbondioxide
(D)
Carbondioxide, water, ozone, and carbohydrates
Question-8
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-9
The process of photosynthesis and respiration cause the cycling of which element in the environment?
(A)
Carbon
(B)
Water
(C)
Nitrogen
(D)
Hydrogen
Question-10
Bacterium drives the cycle of which of the following elements?
(A)
Carbon
(B)
Nitrogen
(C)
Oxygen
(D)
Energy
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Std 9
CBSE
Practice in Related Chapters
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