Chlorofluorocarbon

Q.

Chlorofluorocarbons(CFCs) are widely used in air conditioner and refrigerators etc because of being

1. Flammable

2. Highly reactive

3. Non reactive

4. All of these

Q.

State whether the following statements are true or false. Rewrite the false statements correctly.

Air cannot be compressed.

1. True
2. False

Q. Which of the following elements form CFCs?

1. Chlorine
2. Iron
3. Fluorine
4. Carbon

Q.

Chloroflurocarbons are responsible for the depletion of the ozone layer. Which one of the following reacts with ozone to form oxygen?

1. Carbon
2. Chlorine
3. Fluorine
4. Nitrogen

Q.

The inflated balloon is lighter than the burst balloon.

1. True
2. False

Q. What are chlorofluorocarbons and name their sources

Q. The short form of chlorofluorocarbons is _____.

1. ClFC
2. CFCs

3. ChFC

4. CFCC

Q. Hydrogen is less dense than air.

1. True
2. False

Q. What is the composition of the compounds that are used in air conditioners which result in ozone layer depletion ?

1. Chlorine, Fluorine, Carbon
2. Chromium, Fluorine, Cobalt
3. Calcium, Iron, Copper
4. Chromium, Fluorine, Carbon

Q. CFCs upon reaching the stratosphere decompose into nascent ___ that disturbs oxygen-ozone cycle.

1. C
2. F
3. Cl
4. O

Q. Chlorofluorocarbons are extremely unstable molecules.

1. True
2. False

Q. Chlorofluorocarbons are liberated on using refrigerators and air conditioners.

1. True
2. False