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 - 15 Improvement in Food Resources Quiz 1 | Class - 9th
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Question 1 of 10
1. Question
Sources of carbohydrates are
Correct
Cereals (Wheat, rice, maize, millets and sorghum) are the source of carbohydrates.
Incorrect
Cereals (Wheat, rice, maize, millets and sorghum) are the source of carbohydrates.
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Question 2 of 10
2. Question
Which of the following is known as fodder crop
Correct
Sudan grass and berseem are raised as food for the livestock so they are known as fodder crops.
Incorrect
Sudan grass and berseem are raised as food for the livestock so they are known as fodder crops.
-
Question 3 of 10
3. Question
The crops grown in rainy season are
Correct
The crops grown in rainy season are Kharif crops.
Incorrect
The crops grown in rainy season are Kharif crops.
-
Question 4 of 10
4. Question
Duration of Rabi crop is
Correct
Duration of Rabi crop is from November to April.
Incorrect
Duration of Rabi crop is from November to April.
-
Question 5 of 10
5. Question
Which of the following approaches enhance the crop yield
Correct
All the three crop variety, crop production and crop protection improvement approaches enhance the crop yield by providing high yield productivity.
Incorrect
All the three crop variety, crop production and crop protection improvement approaches enhance the crop yield by providing high yield productivity.
-
Question 6 of 10
6. Question
Crop variety improvement insures
Correct
Crop variety improvement insures good and healthy seeds.
Incorrect
Crop variety improvement insures good and healthy seeds.
-
Question 7 of 10
7. Question
Factors by which variety improvement can be done, are-
Correct
Hybridization and genetic improvement are the factors, helps in variety improvement by introducing new variety with good properties etc.
Incorrect
Hybridization and genetic improvement are the factors, helps in variety improvement by introducing new variety with good properties etc.
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Question 8 of 10
8. Question
GMC stands for
Correct
GMC stands for Genetically Modified Crops.
Incorrect
GMC stands for Genetically Modified Crops.
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Question 9 of 10
9. Question
Which one of the following is not property of improved seed?
Correct
Atmosphere is not property of improved seed.
Incorrect
Atmosphere is not property of improved seed.
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Question 10 of 10
10. Question
Weeds affect the crop plants by
Correct
Weeds affect the crop plants by competing for various resources of crops results low nutrients.
Incorrect
Weeds affect the crop plants by competing for various resources of crops results low nutrients.