TNPSC Chemistry Acid, Base, Salt, Notes, Study Materials Pdf - 1

Question: 1

The chemical used to prepare bleaching powder is ____

(A) Magnesium hydroxide

(B) Potassium hydroxide

(C) Sodium hydroxide

(D) Slaked lime

Question: 2

The gas evolved by the action of heat on copper sulphate is ____

(A) Carbon dioxide

(B) Sulphur dioxide

(C) Sulphur trioxide

(D) Carbon monoxide

Question: 3

Which of the following is used in match industry?

(A) Potassium chlorate

(B) Sodium carbonate

(C) Sodium bicarbonate

(D) Sodium chloride

Question: 4

Which of the following hydroxide is a base but it is not a hydroxide of a metal ____

(A) Ammonium hydroxide

(B) Calcium hydroxide

(C) Potassium hydroxide

(D) Sodium hydroxide

Question: 5

Which of the following colours is given by phenolphthalein in a basic salt solution?

(A) Colourless

(B) Yellow

(C) Orange red

(D) Pink