Page 2 - 4. Home Assignment-Properties and Conc. of Solution

c) they contain more amount of solute

d) They contain equal amounts of solvent and solute.

Q.7 The concentration of 500mL of a sugar solution containing 50g of sugar
dissolved in it is:

a) 50% mass/volume.

b) 10%mass/volume

c) 50% mass/mass

d) 10% mass/mass

Q.8 The concentration of a 1L of a salt solution is 20% mass/volume. What is the
quantity of salt present in it?

a) 100g c) 500g.
b) 200g d) 1000g.

Q.9 The concentration of a solution is always expressed in terms of quantity solute
only (True/False)

Q.10 Mass- mass percentage can only be used only when solute is solid.
(True/False)

SUBJECTIVE QUESTIONS

S.LNo. Questions Mark Skill
Q.1 What is meant by the concentration of a solution? 1 E/U
Q.2 What does a 15% alcohol solution means? 1 Av/A
Q.3 Calculate the concentration of a solution which contains 2.5g of salt 3 Av/A
dissolved in 50g of water?
Q.4 110 g solution of salt is present in 550 g of solution. Calculate the 3 Av/A
concentration of solution.

Q.5 a) How much water should be mixed with 12 ml of alcohol to obtain 5 D/A
12% of alcohol?
b) What do you mean by volume percentage of a solution?

NCERT Textbook- Std.-IX-Science: Pg.No:18 Q.3 and Pg. No. 28 Q.3