Which of the following is true about $FeS$ ?

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Important Questions on Is Matter Around Us Pure?

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 2

Which of the following is not true about sulphur?

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 3

Which of the following is true?

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 4

For each of the following, use letters to indicate whether the matter is element (E), compound (C) or mixture (M).

S. No.	Matter	Classification
$1$ .	Water
$2$ .	Mercury
$3$ .	Air
$4$ .	Tin

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 5

The common characteristic of suspension and colloidal solution is

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 6

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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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 7

Rusting of an article made up of iron is called

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Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 8

A mixture of sulphur and carbon disulphide is

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