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:
a)Plantation
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:
a)Programme
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.
a)Heating
b)Evaporation
c)Lighting
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 - 14 Natural resources Quiz 2 | Class - 9th
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Question 1 of 10
1. Question
Which one of the following is not cause of air pollution?
Correct
An increase in the content of harmful substance (pollutants) in the air like carbon dioxide, carbon monoxide, oxides of sulphur, nitrogen, fluoride, lead, nickel, arsenic and dust particles etc. Causes air pollution.
Incorrect
An increase in the content of harmful substance (pollutants) in the air like carbon dioxide, carbon monoxide, oxides of sulphur, nitrogen, fluoride, lead, nickel, arsenic and dust particles etc. Causes air pollution.
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Question 2 of 10
2. Question
What is Ozone?
Correct
Ozone is an allotrope of oxygen. Its molecule is made up of three oxygen atoms. Molecular formula is O3.
Incorrect
Ozone is an allotrope of oxygen. Its molecule is made up of three oxygen atoms. Molecular formula is O3.
-
Question 3 of 10
3. Question
Soil erosion is-
Correct
Carrying away of upper fertile layer of soil by rain, wind, human activities and wrong agricultural practice is called soil erosion.
Incorrect
Carrying away of upper fertile layer of soil by rain, wind, human activities and wrong agricultural practice is called soil erosion.
-
Question 4 of 10
4. Question
Which of the following is not the causes of soil erosion:
Correct
Soil erosion is carrying away of upper fertile layer of soil by rain, wind, human activities and wrong agricultural practice. Plantation helps in reducing the soil erosion.
Incorrect
Soil erosion is carrying away of upper fertile layer of soil by rain, wind, human activities and wrong agricultural practice. Plantation helps in reducing the soil erosion.
-
Question 5 of 10
5. Question
Biogeochemical Cycles operates:
Correct
The flow of substances from non-living to living and back to non-living is called the cycling of substances which is operated through soil, water, air and biotic factors.
Incorrect
The flow of substances from non-living to living and back to non-living is called the cycling of substances which is operated through soil, water, air and biotic factors.
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Question 6 of 10
6. Question
Carbon present in the atmosphere in the form of-
Correct
Carbon present in the atmosphere in the form of carbon dioxide.
Incorrect
Carbon present in the atmosphere in the form of carbon dioxide.
-
Question 7 of 10
7. Question
Fossil fuel and metallic minerals are:
Correct
Fossil fuel and metallic minerals are present in limited amount in the atmosphere and can be exhausted due to execs use of it.
Incorrect
Fossil fuel and metallic minerals are present in limited amount in the atmosphere and can be exhausted due to execs use of it.
-
Question 8 of 10
8. Question
……………… plays an important role in nitrogen fixation.
Correct
Lightning plays an important role in nitrogen fixation. When lightning occurs, the high temperature and pressure convert nitrogen and water into nitrates and nitrites.
Incorrect
Lightning plays an important role in nitrogen fixation. When lightning occurs, the high temperature and pressure convert nitrogen and water into nitrates and nitrites.
-
Question 9 of 10
9. Question
Which statement is true for ammonification ?
Correct
Ammonification is the process by which soil bacteria decompose dead organic matter and release ammonia into soil.
Incorrect
Ammonification is the process by which soil bacteria decompose dead organic matter and release ammonia into soil.
-
Question 10 of 10
10. Question
Which of the following statements about the de-nitrification is not correct-
Correct
De-nitrification is the process by which nitrates are converted into atmospheric nitrogen.
Incorrect
De-nitrification is the process by which nitrates are converted into atmospheric nitrogen.