Which non-metal is octatomic?

Important Questions on Metals and Nonmetals

MEDIUM

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 13

Which one is used as anode in the electrolytic refining of copper?

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 14

Froth floatation process is used for the concentration of which ore?

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 15

Brass is an alloy of $\mathrm{Cu}$ and which one of the following?

MEDIUM

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 3 - Metals and Nonmetals>Multiple Choice Questions (MCQ)>Q 16

Cinnabar is an ore of

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

EASY

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?

MEDIUM

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 ${\mathrm{MnO}}_2$?

MEDIUM

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?