CFCs

Q. Which gas is added to LPG to make it smell during the leakage?

Q.

The breakdown of CFCs in the presence of UV rays produce _______, which is the main cause for depletion of ozone layer.

1. Hydrogen

2. Carbon

3. Oxygen

4. Chlorine

Q.

The pollutants released from air conditioners and refrigerators affects ______________.

1. buildings

2. ozone layer

3. the aquatic life

4. respiration in humans

Q.

State how CFC break ozone layer.

Q.

The Ozone Layer Is Getting Depleted Because Of

Q.

In Australia, people are suffering from skin cancer due to:

1. gamma rays
2. ultraviolet rays
3. infrared rays
4. all of these

Q. Ozone layer depletion is caused due to _______.

1. CFCs
2. methane
3. nitrogen oxide
4. sulphur dioxide

Q. The chemical properties and atomic masses of oxygen and carbon are different. This can be explained using the postulates of:
(I) Law of conservation of mass
(II) Law of constant proportions
(III) Dalton's atomic theory

1. I and II
2. Only III
3. Only I
4. II and III

Q. The chemical other than chlorofluorocarbon, responsible for ozone depletion and global warming