Acids and Bases MCQs

Acids and bases are just one way to classify matter. Matter is anything that has mass and occupies space. An acid is a solution that contains many H+ ions and derives its name from a word meaning “sour.” A base, which has -OH ions, is sometimes called an alkali. An acid donates hydrogen ions, while a base accepts hydrogen ions. A strong acid readily and completely dissociates its hydrogen ions from its conjugate base. When a base dissolves in water, it increases the concentration of hydroxide ions. By accepting H+ ions, a base depletes the free H+ in a solution, making it less acidic. Interestingly, a substance that behaves as a base in some reactions might act as an acid in others.

When milk of magnesia reacts with acetic acid it produces

(a) basic salts
(b) acidic salts
(c) neutral salt
(d) complex salt

Bleaching powders chemical name is

(a) calcium hypo oxychloride
(b) calcium oxychloride
(c) calcium chloride
(d) calcium chloro oxide

Which of the following phenomena will occur when a small amount of acid is added to water?

(a) dilution
(b) neutralisation
(c) ionization
(d) a,c

When base reacts with the non-metal oxide

(a) it neutralizes each other
(b) it creates fire
(c) it produces acidic salts
(d) it produces basic salts

The ratio of the water molecule in plaster of paris and gypsum is

(a) 3:1
(b) 1:3
(c) 1:4
(d) 4:3

Brine is used for industrial production of

(a) NaOH
(b) KOH
(c) bleaching powder
(d) none of the above

The acid used for the manufacture of fertilizers and explosives is

(a) nitric acid
(b) sulfuric acid
(c) phosphoric acid
(d) hydrochloric acid

Baking powder is

(a) sodium carbonate + sodium tartaric
(b) sodium bicarbonate + sodium tartaric
(c) sodium carbonate + tartaric acid
(d) sodium carbonate + sodium benzoate

Corrosive effect on the skin is caused by

(a) acids
(b) bases
(c) water
(d) a,b

Gastric juice contains HCl which is one example of

(a) inorganic acid
(b) organic acid
(c) soft organic acid
(d) strong inorganic acid