Page 1 - Home Assignment 2.Practice Worksheet

SAI International School
Subject-Chemistry

Cl-IX
Ch-2
Topic-Separating techniques-Distillation,Fractional

distillation,crystallisation
Practice Worksheet

Q.1 Particles of a liquid
(a) are most ordered (b) move randomly (c) have large intermolecular spaces (d) can
slip and slid over each other. [ A+D ] (1mark)

Q.2 A mixture contains more than __ substance mixed in ___proportion.
[ A+Av ] (1mark)
Q3. State True/False

In compound elements combine in definite proportion. [ U+Av ] (1mark)

DIRECTION:Each of these questions contains an Assertion followed by Reason. Read them
carefully and answer the question on the basis of following options. You have to select the one that
best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion & Reason both are incorrect.

Q.4 Assertion : Gases can be easily compressed.
Reason:They have more intermolecular interactions.

Q5. . 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
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