Chemistry Chapter 9 Solutions and Colloids Mcqs Test Online Class 11th Punjab

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Question 1 of 12

Chemistry

1. 100g of a 10% (W/W) NaOH contains 10g of NaOH in

10g of H₂O

100g solution

100g of H₂O

110g of H₂O

Question 1 of 12

Question 2 of 12

2. The solubility of a substance decreases with increase in temperature if heat of solution is:

Cannot be predicted

Positive

Zero

Negative

Question 2 of 12

Question 3 of 12

3. 18g glucose is dissolved in 180g of water. The relative lowering of vapour pressure is:

0.001

1

1.8

0.01

Question 3 of 12

Question 4 of 12

4. All solutions containing 1g of non-volatile solutes will have

Same vapour pressure

Same boiling point

Same freezing point

All of a, b, c

Question 4 of 12

Question 5 of 12

5. Sea water has about 6 ppm dissolved oxygen. What mass of dissolved oxygen is present in one kg of sea water

6 x 10⁻³kg

6 x 10⁻³g

6g

6 x 10⁻³mg

Question 5 of 12

Question 6 of 12

6. Which of the following W/W solutions has the lowest freezing point?

9% glucose

6% urea

34.2% sucorose

18% glucose

Question 6 of 12

Question 7 of 12

7. Molarity of pure water is

1.8

55.5

18

1

Question 7 of 12

Question 8 of 12

8. A solution of urea (Mol.Wt=60) is 10% (W/V). the volume in which 1 mole of it is dissolved will be

0.54 dm³

0.6dm³

6dm³

60cm³

Question 8 of 12

Question 9 of 12

9. Which of the following is volatile

Water

Urea

Sucrose

Glucose

Question 9 of 12

Question 10 of 12

10. Molarity of glucose solution when 9g of it is dissolved in 250 cm³ of solution is

0.25M

0.2M

None of these

0.5M

Question 10 of 12

Question 11 of 12

11. Which of the following is not true of a colloid.

It is heterogeneous

Its particles cannot be seen under ordinary microscope

Can pass through ultra filter paper

Scatter light

Question 11 of 12

Question 12 of 12

12. Aerosol are colloids which contain
(a) A Solid dispersed in a liquid
(b) A solid dispersed in a gas
(c) A liquid dispersed in a gas
(d) A liquid in another liquid

a

b, c

a, b

c, d

Question 12 of 12

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