EASY
9th CBSE
IMPORTANT
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Which of the following statements are true for pure substances?

(i) Pure substances contain only one kind of particles.
(ii) Pure substances may be compounds or mixtures.
(iii) Pure substances have the same composition throughout.
(iv) Pure substances can be exemplified by all elements other than nickel.

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Important Questions on Is Matter Around Us Pure?

EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 2
Rusting of an article made up of iron is called
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 3
A mixture of sulphur and carbon disulphide is
 
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 4
Tincture of iodine has antiseptic properties. This solution is made by dissolving
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 5
Which of the following are homogeneous in nature?
(i) lce
(ii) Wood
(iii) Soil
(iv) Air
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 6
Which of the following are physical changes?
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod:
(iv) Drawing a wire of iron metal
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 7
Which of the following are chemical changes?
(i) Decaying of wood
(ii) Burning of wood
(iii) Sawing of wood
(iv) Hammering of a nail into a piece of wood
EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 8
Two substances, A and B were made to react to form a third substance, A2B according to the following reaction: 2A+B→A2B
Which of the following statements concerning this reaction are incorrect?
(i) The product A2B shows the properties of substances A and B.
(ii) The product will always have a fixed composition.
(iii) The product so formed cannot be classified as a compound.
(iv) The product so formed is an element.
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Multiple Choice Questions>Q 9
Two chemical species X and Y combine together to form a product P which contains both X and Y
X+Y→P 
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition