CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

Related Mcqs:

Which of the following is not a weightless pollutant ?

A. SPM B. Thermal pollution C. Radioactive rays D. Noise pollution...

Pick out the wrong statement pertaining to ‘green house’ for the plants ?

A. ‘Green house’ (made of glass) allows visible sunlight (i.e., short wavelength solar radiation like ultra-violet rays) to pass through the glass and heat up the soil thereby warming up plants inside it B. The emitted longer wavelength radiation (e.g., infrared) is partly reflected and partly absorbed by the glass of the green house C. … Pick out the wrong statement pertaining to ‘green house’ for the plants ?Read More...

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

A. 120 B. 140 C. 170 D. 200...

During sewage treatment, the sewage is subjected to ______________ treatment in Imhoff tank?

A. Filtration B. Digestion C. Sedimentation D. Both B. and C....

Presence of _____________ hardness is responsible for the temporary hardness in water?

A. Carbonate B. Calcium C. Chloride D. Sulphate...