A biosphere is composed of 

1. Living organisms

2. Living organisms + Lithosphere

3. Living organisms + lithosphere + atmosphere

4. Living organisms + lithosphere + atmosphere + Hydrosphere

Subtopic:  Introduction |
 81%
From NCERT
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Which of the following is the non conventional source of energy

(1) Coal

(2) petroleum

(3) Electricity from nuclear power plants

(4) Solar radiations

Subtopic:  Introduction |
 56%
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The population of India is 15% of the world but its annual energy consumption is only

(1) 0.2%

(2) 2.0%

(3) 10%

(4) 25%

Subtopic:  Introduction |
 54%
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Petroleum resource is

(1) Renewable

(2) Non-renewable

(3) Synthetic & biodegradable

(4) Infinite & unconventional

Subtopic:  Introduction |
 86%
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The main aim of plant conservation is - 

(1) To conserve the necessary ecological activities and life-supporting systems

(2) To conserve species diversity and range of genetic material

(3) Both the above

(4) None of the above

Subtopic:  Introduction |
 83%
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Environmental Planing organization is

1. CSIR

2. CPHERI

3. ICAR

4. NEERI

Subtopic:  Introduction |
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Which will not cause any atmospheric pollution

1. Hydrogen

2. Sulphur dioxide

3. Carbon dioxide

4. Carbon monoxide

Subtopic:  Introduction |
 87%
From NCERT
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Which of the following is the main factor of water pollution

(1) smoke

(2) Industrial waste

(3) Detergent

(4) Ammonia

Subtopic:  Water Pollution - Water Pollution & Portable Water |
 85%
From NCERT
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Which is more important for water pollution

(1) Sound

(2) SO2

(3) Salts of arsenic

(4) Sewage

Subtopic:  Water Pollution - Water Pollution & Portable Water |
 76%
From NCERT
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Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicle in Delhi

(1) SO2

(2) Hydrocarbon gases

(3) Fly ash

(4) CO

Subtopic:  Air Pollution - Smog |
 67%
From NCERT
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