set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

The metalloids include the elements

a) Germanium, Tellurium

b) Boron, Silicon

c) Arsenic, Antimony

d) All of these

Question : 2

Which of the following mineral does not contain Al ?

a) Feldspar

b) Cryolite

c) Mica

d) Fluorspar

Question : 3

Which one of the following pairs of metals constitutes the lightest metal and heaviest metal, respectively?

a) Lithium and Osmium

b) Aluminium and Osmium

c) Lithium and Mercury

d) Aluminium and Mercury

Question : 4

Consider the following statements: Nitrogen is an essential constituent of

1. Soils
2. Animals
3. Plants

a) (i) and (ii) only

b) (iii) only

c) (i) and (iii) only

d) (i), (ii) and (iii)

Question : 5

Naturally occuring substances from which a metal can be profitably (or economically) extracted are called?

a) Gangue

b) Minerals

c) Ores

d) Salts

Question : 6

Which of the following is a good conductors of heat and electricity?

a) Chlorine

b) Graphite

c) Oxygen

d) Nitrogen