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

Question : 21

Silicon is used in –

a) Transistors

b) Solar energy devices

c) Semiconductors

d) All of these

Question : 22 [UPPCS (Pre) 1996]

Which one of the following is the hardest metal?

a) Iron

b) Platinum

c) Gold

d) Tungsten

Question : 23 [UPPCS (Mains) 2016]

Which one of the following metals is accessed in the native state?

a) Gold

b) Chromium

c) Aluminium

d) Zinc

Question : 24

Metals are

a) Ductile

b) Malleable

c) Both (a) and (b)

d) Neither (a) nor (b)

Question : 25 [IAS Prelim]

Which one of the following is also called Stranger Gas?

a) Neon

b) Xenon

c) Argon

d) Nitrous oxide