- Ammonia
- Carbon dioxide
- Sulphur dioxide
- Fluorine
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In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as?
Answer: Option 2 Let'
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Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?
Answer: Option 3 Chlorofluorocarbon is responsible for the depletion of ozone layer in the atmosphere.
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Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?
Answer: Option 1 Chlorofluorocarbons is responsible for depletion of ozone layer in the atmosphere.
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Major cause of Ozone depletion is due to which chemical?
Answer: Option 1 Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in...
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_________ is the first country to have phased out the CFCs and HCFCs which are responsible for the depletion of the ozone layer.?
Answer: Option 2 Germany is the first country to have phased out the CFCs and HCFCs which are responsible for the depletion of the ozone layer.
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The potential that appears at a point in space due to the current which caused it is called potential?
Answer: Option 2 Let'
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Under the depletion allowance method in computing depreciation, the depletion charge is equal to either ______ whichever is smaller.?
Answer: Option 2 Let'
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Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
Answer: Option 1 Let'
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Which of the following is/are correct in matching the layer of atmosphere and its characteristic I. Troposphere : weather phenomena II. Stratosphere : ozone layer III. Ionosphere : radio waves reflected to earth's surface IV. Mesosphere : Aurorae?
Answer: Option 4 The following that are correct in matching the layer of atmosphere and its characteristic are Troposphere : weather phenomena, Stratosphere : ozone layer and Ionosphere : radio...
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Which of the following statements about Stratosphere is incorrect?
Answer: Option 3 Stratosphere is free from the violent weather changes which occur below in the Troposphere.
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