CFCs

Find the wrong one out.

(1) Release Cl atoms in stratosphere

(2) Used as refrigerant

(3) Cl of CFCs degrade ozone releasing molecular oxygen

(4) Cl atoms released out of CFCs are also used up during degradation of Ozone

(1) Due to no formation of Ozone

(2) Due to high formation and low degradation of ozone

(3) Due to low formation and high degradation of ozone

(4) Due to no degradation of ozone

(1) Damages DNA and causes mutation

(2) Ageing of skin and damage to the skin cells and cause various types of skin cancer

(3) Inflammation of cornea, cataract

(4) All of these

(1) UV-A

(2) UV-B

(3) UV-C

(4) All of these

(1) An International Treaty

(2) Was signed at Montreal (canada)

(3) To control the emission of Ozone depleting substances

(4) Was effective in 1987

(1) Over Cultivation

(2) Unrestricted Grazing

(3) Deforestation, Poor Irrigation Practices

(4) Proper resource Utilization and Maintenance

(1) Organic Farming

(2) Water logging

(3) Soil salinity

(4) All of these

(1) Due to increased urbanisation, desertification is the major problem.

(2) Irrigation without proper drainage of water leads to waterlogging in the soil, affects the crops

(3) Waterlogging affects the crops and hence the agriculture

(4) Waterlogging cause salt to go downwards

(1) 20%, 10%

(2) 60%, 12%

(3) 40%, 1%

(4) 30%, 2%

(1) At the beginning of twentieth century, forests covered about 30 % of the land of the India

(2) By the end of the twentieth century, forest area shrunk to 19.4 %

(3) According to National Forest Policy of India says 33% forest cover for the plains.

(4) According to National Forest Policy India(1982) 76% forest cover for the hills