Chemistry Ch 9 Class 11 Solutions





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

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

UHS 2011
Chemistry
Solution and Colloids
Elimination Tool:

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

NTS 2013
Chemistry
Solution and Colloids
Elimination Tool:

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

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For colligative properties, the solution should be:

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Definition of Raoult’s law is,

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

UHS 2012
Chemistry
Solution and Colloids
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The oxidation state of Cl in HClO4 is:

NTS 2019
Chemistry
Solution and Colloids
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8/52

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
Elimination Tool:

9/52

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
Elimination Tool:

10/52

Which of the following Is the smallest unit?

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

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In depression of freezing point, freezing constant Is divided by

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

NTS 2015 DUHS and JSMU
Chemistry
Solution and Colloids
Elimination Tool:

14/52

The pH of a solution can be kept constant by:

2022 PMC Test 2
Chemistry
Solution and Colloids
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Which statement is correct?

PMC Sample 3
Chemistry
Solution and Colloids
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Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

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Colloidal particles can be separated by using:

ETEA 2017
Chemistry
Solution and Colloids
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The formula of Plaster of Paris is:

NTS 2017
Chemistry
Solution and Colloids
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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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Molal freezing point constant of water is:

UHS 2013
Chemistry
Solution and Colloids
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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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Elevation of the boiling point is a ____ property.

PMC 2021 Tested
Chemistry
Solution and Colloids
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Colligative Properties depend upon: a

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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
Elimination Tool:

25/52

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:

26/52

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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27/52

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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28/52

Which of the following concentration unit is temperature dependent

ETEA 2019
Chemistry
Solution and Colloids
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29/52

0.5 molar solution NaOH contains:

NUMS 2020
Chemistry
Solution and Colloids
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30/52

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

NTS 2017
Chemistry
Solution and Colloids
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31/52

An ideal solvent dissolves maximum solute at?

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Human blood maintains its pH between

UHS 2016
Chemistry
Solution and Colloids
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33/52

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

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The value of surface tension of isopropyl alcohol is?

NUMS 2017
Chemistry
Solution and Colloids
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The number of moles of solute dissolved per liter of solution is called:

NTS 2012
Chemistry
Solution and Colloids
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36/52

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

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

PMC Sample 3
Chemistry
Solution and Colloids
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39/52

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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40/52

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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41/52

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

PMC Sample 3
Chemistry
Solution and Colloids
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Which of the following has the highest electrical conductivity?

NUMS 2016
Chemistry
Solution and Colloids
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Buffer solutions resist change in their?

PMC Practice 6
Chemistry
Solution and Colloids
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44/52

The oxidation state of Cl in HClO4 is:

NTS 2019
Chemistry
Solution and Colloids
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Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
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46/52

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

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

47/52

Lowering of vapor pressure Is directly proportional to: a)

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Which one of the following statements is incorrect?

NUMS 2018
Chemistry
Solution and Colloids
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The compound with more than 10% solubility in pure water is:

ETEA 2018
Chemistry
Solution and Colloids
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50/52

Lowering of vapor pressure is directly proportional to?

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

UHS 2011
Chemistry
Solution and Colloids
Elimination Tool:

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