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SAI International School
Subject-Chemistry

Ch-Is Matter around us pure?
Topic-Numericals based on concentration of solutions
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 concentration of a sugar solution which contains 15g of sugar per
85g of water is 15%.(m/m)
Reason:

=

Q.2 Assertion: The concentration of a solution is expressed the grams of solute
dissolved per litre of solution.
Reason: Concentration of a solution can be expressed only in terms of mass volume
percentage.
Q.3 Assertion: 20% alcohol solution in water is 20 grams of alcohol per 100g of
solution.
Reason: 20% solution is volume -volume percentage.
Q.4How many litres of 15% (mass/Volume)sugar solution will contain 75 g of sugar?
a) 1 L b) 2 L c) 0.5 L d) 1.5 L
Q.5 What is the concentration of a sugar solution which contains 30g of sugar dissolved
300 mL of the solution?
a) 50% (m/v) b) 10% (m/m) c) 10% (m/v) d)
50% (m/m)
Q.6 Which of the following concentration unit does not vary with temperature?
a) mass- mass percentage b) mass-volume percentage
c) volume-volume percentage d) all of the above
Q.7 What volume of alcohol is required to get 500mL of 20% solution of it in water?
a) 100 mL b) 200 mL
c) 50mL d) 500mL