Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 46

EASY

9th CBSE

IMPORTANT

Earn 100

Calculate the molecular mass of ethanoic acid, ${CH}_{3} COOH$

Important Questions on Atoms and Molecules

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 47

Calculate the molecular mass of nitric acid,

{HNO}_{3}

. (Atomic masses :

H = 1 u; N = 14 u; O = 16 u

)

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 48

Calculate the molecular mass of chloroform (

{CHCl}_{3}

).

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 49

Calculate the molecular mass of hydrogen bromide

(HBr)

.

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 50

Calculate the molecular mass of the following compound:

Hydrogen sulphide, $H_{2} S$

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 50

Calculate the molecular mass of the following compound:

Carbon disulphide, ${CS}_{2}$

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 51

State the law of conservation of mass. Give one example to illustrate this law.

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 52

State the law of constant proportions. Give one example to illustrate this law.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 53

State the various postulates of Dalton's atomic theory of matter.