set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following have low melting and boiling points?

a) Iron

b) Phosphorus

c) Sodium

d) Both (b) and (c)

Question : 2

Which of the following statement regarding non-metals is true?

a) Non-metals are non-lustrous with dull apppearence. Graphite, an allotrope of carbon and iodine have shining lustrous surfaces.

b) Non-metals are of two types only solids and gases.

c) Non-metals reacts with oxygen to form basic oxides generally.

d) Non-metals replace hydrogen from acids.

Question : 3

Heaviest metal of the following is made of

a) Uranium

b) Aluminium

c) Copper

d) Silver

Question : 4

Deionised water is produced by

a) Ion-exchange resin process

b) Clark’s process

c) Calgon process

d) Permutit process

Question : 5

Which one of the following metals is liquid at ordinary temperature?

a) Nickel

b) Mercury

c) Lead

d) Tin

Question : 6

The softest mineral, Talc (Soapstone) is mainly

a) Sodium Silicate

b) Sodium Phosphate

c) Manganese Silicate

d) Magnesium Silicate