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Metals, Non-Metals and Alloys — Science Questions & Practice

Practise 19 Metals, Non-Metals and Alloys questions from Science for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Metals, Non-Metals and Alloys — with answers

Try each question first, then open the answer. Explanations are included.

1. Which non-metal is liquid at room temperature?

ABromine
BIodine
CSulphur
DChlorine

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Answer: A

Bromine is a liquid non-metal at room temperature.

2. Which is the hardest natural substance known?

AGraphite
BDiamond
CIron
DQuartz

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Answer: B

The correct answer is 'Diamond'.

3. Which metal is liquid at room temperature?

AMercury
BGallium (also liquid near room temp, but Mercury is the classic answer)
CIron
DSodium

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Answer: A

The correct answer is 'Mercury'.

4. Which metal is used to galvanize iron to prevent rusting?

ATin
BCopper
CZinc
DAluminium

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Answer: C

The correct answer is 'Zinc'.

5. Which gas is used in fire extinguishers?

AHydrogen
BCarbon Dioxide
COxygen
DNitrogen

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Answer: B

The correct answer is 'Carbon dioxide'.

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