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

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Question 1 of 12

Chemistry

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

6dm³

0.6dm³

0.54 dm³

60cm³

Question 1 of 12

Question 2 of 12

2. Which of the following is volatile

Water

Glucose

Sucrose

Urea

Question 2 of 12

Question 3 of 12

3. 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

a, b

b, c

c, d

Question 3 of 12

Question 4 of 12

4. Molarity of pure water is

1

18

1.8

55.5

Question 4 of 12

Question 5 of 12

5. 18g glucose is dissolved in 180g of water. The relative lowering of vapour pressure is:

0.01

1.8

1

0.001

Question 5 of 12

Question 6 of 12

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

Same vapour pressure

Same freezing point

Same boiling point

All of a, b, c

Question 6 of 12

Question 7 of 12

7. 100g of a 10% (W/W) NaOH contains 10g of NaOH in

110g of H₂O

10g of H₂O

100g solution

100g of H₂O

Question 7 of 12

Question 8 of 12

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

6 x 10⁻³g

6 x 10⁻³mg

6 x 10⁻³kg

6g

Question 8 of 12

Question 9 of 12

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

0.25M

0.5M

0.2M

None of these

Question 9 of 12

Question 10 of 12

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

Its particles cannot be seen under ordinary microscope

It is heterogeneous

Can pass through ultra filter paper

Scatter light

Question 10 of 12

Question 11 of 12

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

18% glucose

6% urea

34.2% sucorose

9% glucose

Question 11 of 12

Question 12 of 12

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

Negative

Cannot be predicted

Zero

Positive

Question 12 of 12

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