The green colour of the leaves is due to-

Which of the following is the richest source of phosphorus?

Oil and water can form a stable dispersion with the help of a substance commonly called a(n):

Milk tastes sour when kept in the open for sometimes due to the formation of-

Which acid is majorly found in Orange?

Which of the following pollutants is the major contributor to photochemical smog?

Which of the following glands is a source of the enzyme Ptyalin?

What is the primary purpose of using bleaching powder in drinking water?

Match the following gases with their typical uses:

List I (Gas)                               List II (Uses)