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
Rusting of an article made up of iron is called
A mixture of sulphur and carbon disulphide is
Tincture of iodine has antiseptic properties. This solution is made by dissolving
Which of the following are homogeneous in nature?
(i) ice (ii) wood (iii) soil (iv) air
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
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
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
Additional Information about Quiz on Chapter – Is Matter Around Us Pure | CBSE Class 9 Chemistry:
This quiz is based on Exemplar Problems and Other Questions from the "Is Matter Around Us Pure" chapter of the Chemistry section in the Science subject for CBSE NCERT Class 9 (IX). These questions, provided by NCERT, are crafted to enhance conceptual clarity and develop problem-solving skills. For more such educational resources, visit the official NCERT website.
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