A bee-sting leaves an acid which causes pain and irritation. The injected acid is

The structure of the compound which enters the stomach and secretes which causes pain and irritation in the stomach is

(i) Bee sting leaves a chemical substances that causes pain and irrigation. Name the chemical substance. Identify the type of substance which may give relief on the sting area when applied on it. (ii) Mention the pH value below which tooth decay begins. How this fall below this value? Explain the ill effect of the acidic medium in the mouth. How can this be prevented?

Pollutant which causes acid rain is

Pollutant which causes acid rain is

Pollutant which causes acid rain is

The gases which cause acid rain are

Which oxides cause acid rain ?