Questions : –

1. Which one of the following is not cause of air pollution?
a)Carbon dioxide
b)Carbon monoxide
c)Oxides of sulphur
d)None of these

2. What is Ozone?
a)Allotrope of nitrogen
b)Part of nitrogen
c)Part of ozone
d)Allotrope of oxygen

3. Soil erosion is-
a)Rainwater harvesting
b)Groundwater extraction
c)Removal of fertile layer of soil
d)Avoiding water wastage

4. Which of the following is not the causes of soil erosion:
b)Removal of top soil by wind and water
c)Due to lack of trees the upper layer of soil is eroded by air and water
d)None of these

5. Biogeochemical Cycles operates:
b)Abiotic factor
c)Both (a) and (b)
d)Soil, water air and biotic factor

6.Carbon present in the atmosphere in the form of-
a)Carbon monoxide
b)Carbon dioxide
c)Carbon Carbon
d)Carbon methane

7. Fossil fuel and metallic minerals are:
(a) Renewable resource
(b) Inexhaustible resources
(c) Non-renewable resources
(d) None of these

8. ……………… plays an important role in nitrogen fixation.
d)All of the above

9. Which statement is true for ammonification?
a)Process of decomposition of organic matter to ammonia
b)Process of decomposition of organic matter to nitriles
c)Process of decomposition of inorganic matter to ammonia
d)All of the above

10. Which of the following statements about the de-nitrification is not correct-
a)Nitrates to atmospheric nitrogen
b)Ammonia to organic matter
c)Nitrates to nitrites
d)None of the above

Chapter - 15 Improvement in Food Resources Quiz 1 | Class - 9th

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