LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Higher Order Thinking Skills (HOTS) Questions>Q 12

HARD

9th CBSE

IMPORTANT

Earn 100

Calculate the total number of electrons present in one mole of ammonia ( ${NH}_{3}$ ).

Important Questions on Atoms and Molecules

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 1

Define mole.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 1

Define molar mass.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 1

Define gram-molecular mass.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 2

Define valency.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 2

Define valence electron.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 3

State the postulates of Dalton's atomic theory. Is the theory valid at present? Give reasons.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 4

What is the atomicity of

{PCl}_{5}

?

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>TEST PAPER>Q 4

What is the atomicity of

{CH}_{4}

?