metals, non metals, minerals, ores, properties, uses - Category wise Question and Answer Practice Test with Solutions

Question : 1 [RAS/RTS (Pre) 2007]

Chemically ‘Plaster of Paris’ is

a) Calcium Carbonate

b) Calcium Oxide

c) Calcium Sulphate

d) Calcium Oxalate

Question : 2

Which of the following metals reacting with sodium hydroxide solution produce hydrogen gas?

1. Cu
2. Al
3. Fe
4. Zn

a) A and D

b) B and D

c) B and C

d) B only

Question : 3 [RAS/RTS (Pre) 1999]

Iron is obtained from

a) Pitch-blende

b) Monazite Sand

c) Limestone

d) Hematite

Question : 4

The only metal that is liquid at room temperature is -

a) zinc

b) mercury

c) sodium

d) tungsten

Question : 5 [CDS]

Which one of the following is the softest?

a) Aluminium

b) Iron

c) Sodium

d) Copper