Cinnabar is an ore of

Important Questions on Metals and Nonmetals

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 17

Calcination is used to concentrate which ore

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 18

A sulphide ore is concentrated by which process?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 19

Which reducing agent can be used in the isolation of $\mathrm{Mn}$ from ${\mathrm{MnO}}_2$?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 20

What is the colour of the flame imparted by a salt of barium chloride?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 21

Brick-red colour is imparted to the flame of the burner by the salt of which metal?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 22

An ore gives out ${\mathrm{CO}}_2$ on being treated with dilute hydrochloric acid. Which process should be used to concentrate this ore?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 23

The mass percent of gold in a sample of $24$ carat gold is $100$. What is its mass percent in a sample of $18$ carat gold?

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10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 24

Copper will displace which one from its compound?