What are Carbogen and smelling salt? Give one use of each of them.

Give one use of H_2O_2

Give one use of Freon-12.

What are buffer solutions? Give one example for each of the buffer- a buffer solution obtained by mixing aquueous solutions of two salts derived from a polybasic acid.

What are buffer solutions? Give one example for each of the buffer- acid, basic buffer solution.

What is nitrolim ? Give one use .

What are the following substances? Give one example of each one of them: (i) Tranquilizers, (ii) Food preservatives, (iii) Synthetic detergents.

What are lyophilic and lyophobic sols? Give one example of each type. Why are hydrophobic sols easily coagulated?

What is carbogen and what its use?

What are simple salts? Give one example.

Unambiguous, universal and degenerate are some of the terms used for the genetic code. Explain the salient features of each one of them.