Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 12

MEDIUM

9th CBSE

IMPORTANT

Earn 100

If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.

Important Questions on Atoms and Molecules

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 13

Work out the formula for sulphur dioxide. (Valencies:

S = 4, O = 2

)

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 14

If the valency of carbon is

4

and that of sulphur is

2

, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 15

An element X has a valency of 4 where as another element Y has a valency 1. What will be the formula of the compound formed between X and Y?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 16

An element

B

shows valencies

4

and

6

, write the formulae of its two oxides.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 17

An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed?

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 18

Work out the formula for magnesium hydrogen carbonate.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 19

An element $X$ has valency $2$ . Write the simplest formula for the bromide of the element.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 19

An element $X$ has valency $2$ . Write the simplest formula for the oxide of the element.