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

At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of

Question # 2

Which of the following aqueous solutions have the lowest freezing point

Question # 3

The process in which solvent particles surround solute particles is called

Question # 4

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 # 5

The relative lowering of vapour pressure is equal to the mole fraction of the solute is statement of

Question # 6

In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in

Question # 7

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

Question # 8

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

Question # 9

An azeotropic mixture of two liquids boils at a lower temperature than either of them when :

Question # 10

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 # 11

A solution consisting of 92 grams ethyl alcohol (C2H5OH) 96 grams methyl alcohol (CH3OH) 90 grams water the mole fraction and mole percent of methyl alcohol is

Question # 12

Solubility of a substance in water decreases with rise in temperature except

Question # 13

Colligative properties are the properties of :

Question # 14

The ratio of moles of a particular component of solution to total moles of all components of solution is :

Question # 15

0.5 M of H2SO4is diluted from 1 litre to 10 litre, normality of resulting solution is

Question # 16

Which one of the following is an ideal solution that obeys Rault's law

Question # 17

Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point

Question # 18

Zeotropic mixture

Question # 19

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

Question # 20

The number of moles of solute in 1000g (1 Kg) of the solvent is called :

Question # 21

Coligative properties are the properties of

Question # 22

When the solute is present in trace quantities the following expression is used

Question # 23

A solution contains 1.2046 x 1024hydrochloric acid molecules in one dm3of the solution. The strength of the solution is

Question # 24

Vant Hoff's factor of Ca(NO3)2is

Question # 25

In which type of following solutions we don't know the total volume of the solutions :

Question # 26

The number of moles of solute dissolved per dm3 of the solution is called :

Question # 27

Which one of the following solution will have higher vapour pressure than that of water

Question # 28

How many g of dibasic acid (mol. wt. 200) should be present in 100 ml of the aqueous solution to give 0.1 Normality?

Question # 29

A solution of two component is called

Question # 30

Which substances are mixed to form a buffer solution?

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ECAT Chemistry Chapter 9 Important MCQ's

Sr.# Question Answer
1 The number of moles of solute dissolved per dm3 of the solution is called :
A. Normality.
B. Molarity.
C. Molarity.
D. None of above.
2 Which one of the following is an ideal solution that obeys Rault's law
A. Ethanol + water
B. Benzene + toluene
C. HCI + water
D. Acetone + chloroform
3 Camphor is often used in molecular mass determination because
A. It is solvent for organic substances
B. It is readily available
C. It has a very high cryoscopic constant
D. It is volatile
4 Which one of the following solution will have higher vapour pressure than that of water
A. Aqueous solution of methanol
B. Aqueous solution of HCI
C. Aqueous solution of glucose
D. Aqueous solution of urea
5 The process in which solvent particles surround solute particles is called
A. Hydrolysis
B. Hydration
C. Solvation
D. Dissolution
6 18 g glucose is dissolved in 90 g of water. The relative lowering vapor pressure is equal to :
A. 1/5
B. 5.1
C. 1/51
D. 6
7 Which is independent of temperature
A. Molarity
B. Molality
C. Normality
D. Mole fraction
8 If ionic product of a solution is greater than solubility product, the solution is
A. Supersaturated
B. Saturated
C. Unsaturated
D. None of these
9 Which one of the following is a colligative property?
A. Surface tension
B. Osmotic pressure
C. Viscosity
D. Refractive index
10 Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point
A. Methanol + CCI4
B. Methanol + acetone
C. Ether + HCI
D. Acetone + chloroform

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