A $15\%$ alcohol solution means:

Important Questions on Is Matter Around Us Pure

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 10

Calculate the concentration of a solution which contains $2.5 \mathrm{g}$ of salt dissolved in $50 \mathrm{g}$ of water.

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 11

What is the concentration of a solution which contains $16 \mathrm{g}$ of urea in $120 \mathrm{g}$ of solution?

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 12

A solution contains $5.6 \mathrm{mL}$ of alcohol mixed with $75 \mathrm{mL}$ of water. Calculate the concentration of this solution.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 13

If $25 \mathrm{mL}$ of acetone is present in $150 \mathrm{mL}$ of its aqueous solution, calculate the concentration of the solution.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 14

What happens when the temperature of a saturated sugar solution is increased?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 15

Which of the following contains less solute at a given temperature and pressure?
Unsaturated solution or Saturated solution.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 16

State one instance where water undergoes a physical change and one in which it undergoes a chemical change.

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Very Short Answer Type Questions>Q 17

Bread is an example of solid foam.