acids, bases, salts and metals - Category wise Question and Answer Practice Test with Solutions

Question : 6

Aluminium is used in thermite welding because –

a) aluminium is a strong oxidising agent

b) aluminium is a light metal

c) aluminium has more affinity for oxygen

d) aluminium is a reactive metal

Question : 7

Acids and bases are important because of

a) their effects on human health

b) their effect on farmer’s crop

c) their use in industry

d) all the above are correct.

Question : 8 [UP UDA/LDA (Spl)(Mains) 2010]

Which chemical compound is present in Bleaching Powder?

a) Calcium Oxychloride

b) Calcium Carbonate

c) Calcium Hydroxide

d) Ammonium Chloride

Question : 9

Why bases are kept in glass bottles?

a) Bases are corrosive in nature

b) Bases produce OH– ions in aqueous solutions

c) Basic solutions are conducting in nature

d) Bases have soapy texture

Question : 10 [UPPCS (Pre) 2010]

The hypo solution used in photography is an aqueous solution of

a) Sodium tetrathionate

b) Sodium sulphate

c) Sodium thiosulphate

d) Ammonium per sulphate