Q. Air pollution causes -
1) global warming
2) floods
3) acid rain
4) All of the above
Q. Deforestation is one of the sources of pollution because -
1) it increases the oxygen levels produced
2) it decreases the Carbon dioxide
3) it causes fertilizers to wash away in the water
4) it decreases atmospheric power to absorb carbon dioxide
Q. Which of the following indicates the types of soil erosion in decreasing order of damage caused in India?
1) Ravine erosion and gullies, alkalinity and salinity, weeds and water-logging
2) Alkalinity and water-logging, ravine erosion and weeds
3) Water-logging, weeds, salinity and ravine erosion
4) All are equally damaging
Q. Which of the following soils is formed under typical monsoonal conditions?
1) Black soils
2) Red soils
3) Laterite soils
4) None of the above
Q. Which is the chief characteristic of the soil of the Indo-Gangetic plain ?
1) It is derived from Himalayan rocks
2) It is rich in humus
3) It is formed of peninsular rocks
4) It is derived from local rocks
Q. 71% of earth surface is covered with -
1) land
2) air
3) water
4) coal
Q. Oder Neisse Line is an International boundary line between -
1) Germany and Poland
2) Netharland and Germany
3) France and UK
4) Denmark and Norway
Q. "Dihang-Dibang" Biosphere Reserve is located in -
1) Assam
2) Arunachal Pradesh
3) Meghalaya
4) Nagaland
Q. "Cold Desert" Biosphere Reserve is located in -
1) Himachal Pradesh
2) Uttarakhand
3) Rajasthan
4) Gujarat
Q. 'Humus' is an example of -
1) Soil structure
2) Crystalloids
3) Organic colloids
4) None of the above
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