FSC Chemistry MCQs Chapter 9 Class 11





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Chemistry Ch 9 Class 11 Solution and Colloids

1 / 52

Molarity is defined as the number of moles of any substance dissolved:

UHS 2011
Chemistry
Solution and Colloids
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2 / 52

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.2 is equal to:

NUMS 2015
Chemistry
Stoichiometry
Solution and Colloids
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3 / 52

The osmotic pressure of equimolar solutions of BaCl2, NaCl and sucrose will be in the order:

NUMS 2016
Chemistry
Solution and Colloids
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4 / 52

Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10-6. What’ll be its solubility:

UHS 2017 Reconduct
Chemistry
Solution and Colloids
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5 / 52

Human blood maintains its pH between

UHS 2016
Chemistry
Solution and Colloids
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6 / 52

Which one of the following statements is incorrect?

NUMS 2018
Chemistry
Solution and Colloids
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7 / 52

Elevation of the boiling point is a ____ property.

PMC 2021 Tested
Chemistry
Solution and Colloids
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8 / 52

Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

9 / 52

The pH of a solution can be kept constant by:

2022 PMC Test 2
Chemistry
Solution and Colloids
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10 / 52

Colligative Properties depend upon: a

11 / 52

Colloidal particles can be separated by using:

ETEA 2017
Chemistry
Solution and Colloids
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12 / 52

The number of moles of solute dissolved per dm) of the solution is called

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The amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

14 / 52

The compound with more than 10% solubility in pure water is:

ETEA 2018
Chemistry
Solution and Colloids
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15 / 52

The oxidation state of Cl in HClO4 is:

NTS 2019
Chemistry
Solution and Colloids
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16 / 52

The number of moles of solute dissolved per liter of solution is called:

NTS 2012
Chemistry
Solution and Colloids
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17 / 52

From a mixture of CO2and H2gases, CO2can be separated by passing the mixture through:

NTS 2013
Chemistry
Solution and Colloids
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18 / 52

The properties of liquid crystals are intermediate b/w crystals and

PMC Sample 3
Chemistry
Solution and Colloids
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19 / 52

Percentage of weight of NaCI if 2g NaCI is dissolved in 18g water

20 / 52

The elevation in boiling point ∆?? is equal to ebullioscopic constant ?? when the Molarity (?) of the solution is:

ETEA 2018
Chemistry
Solution and Colloids
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21 / 52

Which of the following concentration unit is temperature dependent

ETEA 2019
Chemistry
Solution and Colloids
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22 / 52

Buffer solutions resist change in their?

PMC Practice 6
Chemistry
Solution and Colloids
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23 / 52

Mole fraction of any compound is the ratio of moles of all components in a:

UHS 2011
Chemistry
Solution and Colloids
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24 / 52

Lowering of vapor pressure Is directly proportional to: a)

25 / 52

In depression of freezing point, freezing constant Is divided by

26 / 52

0.5 molar solution NaOH contains:

NUMS 2020
Chemistry
Solution and Colloids
Elimination Tool:

27 / 52

If NaCl produced in the equation:

FeCl3+ NaOH → Fe(OH)3 + NaCl

175.5 g of NaCl was dissolved in water to make a liter of solution, the molarity would be:

NTS 2010
Chemistry
Solution and Colloids
Elimination Tool:

28 / 52

Which statement is correct?

PMC Sample 3
Chemistry
Solution and Colloids
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29 / 52

At 25 C, the equivalent conductance at infinite dilution of HCl solution is 425 ohm 1 cm 2 Equiv 1 while its specific conductance is 3.825 ohm 1 cm 1. If the apparent degree of dissociation is 90%, the normality of the solution is:

NUMS 2016
Chemistry
Solution and Colloids
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30 / 52

The solubility product for BaSO4 , at 18-25°C is:

NTS 2015 DUHS and JSMU
Chemistry
Solution and Colloids
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31 / 52

For a chemical reaction to occur, particles that collide should:

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

32 / 52

Which of the following Is the smallest unit?

33 / 52

The value of surface tension of isopropyl alcohol is?

NUMS 2017
Chemistry
Solution and Colloids
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34 / 52

The reaction in which a molecule is broken down by Water is known as

35 / 52

An azeotropic mixture of two liquids has a boiling point higher than either of them when it:

NUMS 2016
Chemistry
Solution and Colloids
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36 / 52

The oxidation state of Cl in HClO4 is:

NTS 2019
Chemistry
Solution and Colloids
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37 / 52

Definition of Raoult’s law is,

38 / 52

The aqueous solution of which of the following electrolyte will conduct electric current to large extent:

ETEA 2018
Chemistry
Solution and Colloids
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39 / 52

If 18.0 g of glucose is dissolved in 1 kg of water, boiling point of this solution should be:

UHS 2013
Chemistry
Solution and Colloids
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40 / 52

For colligative properties, the solution should be:

41 / 52

The formula of Plaster of Paris is:

NTS 2017
Chemistry
Solution and Colloids
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42 / 52

Which of the following has the highest electrical conductivity?

NUMS 2016
Chemistry
Solution and Colloids
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43 / 52

Molal freezing point constant of water is:

UHS 2013
Chemistry
Solution and Colloids
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44 / 52

What is the molality of 92 g toluene In 250 g benzene?

45 / 52

Lowering of vapor pressure is directly proportional to?

46 / 52

Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
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47 / 52

An ideal solvent dissolves maximum solute at?

48 / 52

Aqueous solutions of Iodine and Sodium hydroxide were mixed in a round bottom flask at 70 C. Following chemical reaction was carried out.

3I2 + 6 NaOH -> NaIO3 + NaI + H2O
This reaction is termed as;

UHS 2019
Chemistry
Solution and Colloids
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49 / 52

12% W/W alcohol In water solution contains water:

50 / 52

6 g of urea is dissolved in 90 g of water. The relative lowering of vapour pressure is:

NUMS 2015
Chemistry
Solution and Colloids
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51 / 52

As the number of solute particles increases, the freezing point of the solution:

UHS 2012
Chemistry
Solution and Colloids
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52 / 52

The temperature at which one crystalline form changes to other is called ___ temperature

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

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