Q. No.Good ozone is
1. Found in the upper strata of the atmosphere
2. Found in Stratosphere
3. Acts as a shield to UV light
4. All of these
UV-B
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
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
1. ozone
2. ammonia
3. methane
4. nitrous oxide
Montreal protocol aims at
1. reduction of ozone depleting substances
2. biodiversity conservation
3. control of water pollution
4. control of CO2 emission
The zone of atmosphere in which the ozone layer is present is called
1. ionosphere
2. mesosphere
3. stratosphere
4. troposphere
Which of the following statements about ozone is correct?
1. Tropospheric ozone protects us from UV radiation
2. Stratospheric ozone is 'bad'
3. Tropospheric ozone is 'good'
4. Stratospheric ozone protects us from UV radiation
The Montreal Protocol was signed in 1987 to:
1. prevent deforestation around the world
2. control the emission of ozone depleting substances
3. control the green house gases
4. prevent hazards from radioactive nuclear wastes
Over Antarctica region, the ozone hole is
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. Carbon
2. Cl
3. Fe
4. Oxygen
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