EASY
9th CBSE
IMPORTANT
Earn 100

Which one of the following will not show Tyndall effect?

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Important Questions on Is Matter Around Us Pure?

EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 1
Pick out the colloid from the following:
Sugar solution, salt solution, muddy water, milk.
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 2

Which of the following will show Tyndall effect?

(a) Egg albumin in water 
(b) Sugar solution
(c) Common salt solution
(d) Starch solution

EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 3
What is a pure substance?
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 4
Identify the solution from the following mixtures:
(a) air
(b) muddy water
(c) sea water
(d) soda water
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 5
The 'sea water' can be classified as a homogeneous as well as heterogeneous mixture. Comment.
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 6
Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 1
State points of difference between homogeneous and heterogeneous mixtures.
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2A>Q 2
Given a solution of substance A, how will you test whether it is saturated or unsaturated with respect to A, at the prevailing temperature? What is observed when a hot saturated solution of a substance is allowed to cool?