Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 6

MEDIUM

9th CBSE

IMPORTANT

Earn 100

A solution is always a liquid. Comment.

Important Questions on Sample Paper

EASY

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 6

Can a solution be heterogeneous?

MEDIUM

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 7

Give reasons: Steam produces more severe burns than water.

MEDIUM

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 7

Give reasons: We are able to sip hot tea faster from a saucer than a cup.

MEDIUM

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 7

Give Reasons: Water kept in earthen pot becomes cool during summer.

EASY

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 8

Hydrogen has three isotopes which are written as:

{}_{1}^{1}H

,

{}_{1}^{2}H

,

{}_{1}^{3}H

Explain why these isotopes
(A) have identical chemical properties.
(B) are electrically neutral.
(C) differ in their mass.

EASY

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 9

Write the names of the compounds represented by the following formulae :

(a) ${Na}_{2} S$
(b) ${KNO}_{3}$

EASY

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 9

Write the chemical formulae of:
(a) Aluminium chloride
(b) Magnesium oxide.

MEDIUM

9th CBSE

IMPORTANT

Essentials of Chemistry>Chapter 9 - Sample Paper>Sample Paper 2>Q 9

Find out the mass of $12.044 \times 10^{23}$ atoms of magnesium. (Given, the mass of $Mg = 24 u$ ).