Page 1 - Home Assign 1.Sub and Obj

SAI International School
Subject-Chemistry

Ch-Is Matter around us pure?
Topic-Separating funnel, sublimation, chromatography
HOME ASSIGNMENT

OBJECTIVE QUESTIONS
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.1 Assertion: The mixture containing iodine and common salt can be separated by
sublimation.
Reason: Both iodine and common salt are soluble in water
Q.2 Assertion: A mixture of oil and water can be separated by a separating funnel.
Reason: There is a separate boundary between oil and water.
Q.3 Assertion: The different components of blue ink can be separated by
evaporation.
Reason: The different components of ink are soluble in the same solvent.
Q.4Assertion:When a mixture of kerosene and water is kept in a separating funnel
the kerosene forms the lower layer.
Reason: Kerosene is heavier than water.
Q.5 Assertion: A mixture of sugar and ammonium chloride can be separated by
sublimation.
Reason: Sugar is soluble in alcohol.
Q.6 The drugs from blood can be separated by:
a) Sublimation b) separating funnel
c) centrifugation d) chromatography
Q.7 The separation by separating funnel is based on:
a) Density of the liquids b) Immiscibility of liquids
c) Both (a) and (b) are correct d) None of the above

SUBJECTIVE QUESTIONS
Sl.No. Questions Mark Skill
Q.1 Which separation techniques will you apply for the separation of oil 1 U/Av
from a mixture of oil and water?

Q.2 How can drugs be separated from blood? 1 A/Av

Q.3 With a neat labelled diagram explain the process used for 3 A/Av
separating two immiscible liquids also state the principle involved.

Q.4 State the principle involved in the following processes 3 U/Av
a) Sublimation
b) Chromatography.