ECAT Pre Engineering Chemistry Chapter 9 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 9 Solutions

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ECAT Chemistry Chapter 9 Solutions

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Question # 1

Number of moles of solute dissolved in 1 Kg of solvent is knowns as

Question # 2

The osmotic pressure of 1 m solution at 27°C is

Question # 3

Maximum freezing point falls in

Question # 4

A solution has 92 g of ethyl alcohol, 96 g of methyl alcohol and 90 g of water. Mole percentage of ethyl alcohol in the solution is

Question # 5

What happens when isotonic solution of A (mol.wt.342) and B (mol.wt 60) are put in to communication through semipermeable membrane?

Question # 6

18 g glucose is dissolved in 90 g of water. The relative lowering vapor pressure is equal to :

Question # 7

To calculate volume of the solvent, we need to know, the :

Question # 8

Every sample of matter with uniform properties and a fixed composition is called a :

Question # 9

An azeotropic mixture showing it's positive deviation from Raoult's law, the volume of the mixture is :

Question # 10

Freezing point depression is measured by

Question # 11

The solutions of NaCl and KCl are prepared separately by dissolving same amount of solute in water, which of the following statements is true fro these solutions ?

Question # 12

The boiling point of an a zeotropic mixture of water and ethye alcohol is less than that of water and alcohol. The mixture shows

Question # 13

In which type of following solutions the total volume of solutions may not be necessarily equal to sum of volumes of solute and solvent ?

Question # 14

Which of the following is not a colligative property?

Question # 15

0.1 molar glucose (C6H12O6) solution has the % W/N

Question # 16

Azeotropic mixture of HCl and water has

Question # 17

Which one of the following has continuous solubility curve

Question # 18

Which of the following mixture of liquids show negative deviation form Raults law

Question # 19

Ifα us the degree of dissociation of Na2SO4the vant Hoff's factor (1) used for calculating the molecular mass is

Question # 20

The molarity of solution containing 14.5 grams urea (N2H4CO) dissolved in 100 cm3of the solution is

Question # 21

Elevation of boiling point is measured by

Question # 22

At room temperature, the mole fraction of a solution in 0.25 and the vapour pressure of the solvent is 0.80 atm. Then the lowering of vapour pressure is

Question # 23

As compared to molar solution, in the molal solution the quantity of solvent is :

Question # 24

Which of the following solution has the highest boiling point

Question # 25

Which of the following salts mixed with ice to make the freezing mixture used in ice cream machine

Question # 26

If ionic product of a solution is greater than solubility product, the solution is

Question # 27

Molarity of pure water is :

Question # 28

If 5.85 g of NaCl are dissolved in 90 g of water, the mole fraction of NaCl is

Question # 29

Use of glycol as anti freeze in the automobile is an important application of

Question # 30

Which of the following is a colligative property?

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ECAT Chemistry Chapter 9 Important MCQ's

Sr.# Question Answer
1 The weight of pure NaOH required to prepare 250 cm3of 0.1 N solution is
A. 4 g
B. 1 g
C. 2 g
D. 5 g
2 Dust particles in smoke is a solution of the type
A. Liquid is solute and solid is solvent
B. Solid is solute and liquid is solvent
C. Solid is solute and gas is solvent
D. Gas is solute and solid is solvent
3 Cane sugar is not soluble in benzene but soluble in water because
A. Cane sugar is a macro molecule
B. Cane sugar is an ionic compound
C. Can sugar has hydrogen bonding
D. Can sugar is an organic molecule
4 If 5.85 g of NaCl are dissolved in 90 g of water, the mole fraction of NaCl is
A. 0.1
B. 0.01
C. 0.2
D. 0.0196
5 Which of the following mixture of liquids show negative deviation form Raults law
A. Ethyl alcohol and ether
B. HCI and water
C. Phenol- water
D. Chlorobenene-bromobenene
6 At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of
A. CaCl2
B. KCl
C. Glucose
D. Urea
7 The number of moles of solute in 1000g (1 Kg) of the solvent is called :
A. Molarity
B. Molarity
C. Normality
D. Mole fraction
8 What is the molarity of H2SO4solution that has density of 1.84 gm/cc at 35°C and contains 98% by weight?
A. 4.18 M
B. 8.14 M
C. 18.4 M
D. 18 M
9 A solution of glucose is 10% The volume to which 1g mole of it dissolved will be :
A. 8.1 dm3

B. 1.7 dm3

C. 1.8 dm3

D. 6.1 dm3
10 The ratio of moles of a particular component of solution to total moles of all components of solution is :
A. Mole fraction.
B. Molality.
C. Molarity.
D. Normality.

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