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

The osmotic pressure of a dilute solution is directly proportional to the

Question # 2

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

Question # 3

10g Of NaOH Has Been Dissolved Perdm3of solution. The morality of solution is :

Question # 4

Which of the following liquid pairs shown a positive deviation from Raoult's law

Question # 5

Freezing point depression is measured by

Question # 6

Maximum freezing point falls in

Question # 7

Hydrolysis of potassium acetate produces

Question # 8

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

Question # 9

Which is independent of temperature

Question # 10

Which of the following is a colligative property?

Question # 11

A solution of two component is called

Question # 12

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

Question # 13

A solution of glucose is 10% The volume to which 1g mole of it dissolved will be :

Question # 14

Precipitation will occur until the ionic product becomes

Question # 15

What is the molarity of H2SO4solution that has density of 1.84 gm/cc at 35°C and contains 98% by weight?

Question # 16

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

Question # 17

A homogeneous mixture of two or more than two chemical substances is called

Question # 18

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 # 19

10 ml of 1.5 M NaOH solution is neutralized by 20 ml of a-M HCl solution. The value of 'a' will be

Question # 20

Which substances are mixed to form a buffer solution?

Question # 21

The ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO4is

Question # 22

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 # 23

The weight of pure NaOH required to prepare 250 cm3of 0.1 N solution is

Question # 24

Azeotropic mixture of HCl and water has

Question # 25

In azeotropic mixture showing negative deviation form Raoult's law show

Question # 26

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

Question # 27

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

Question # 28

Which one of the following has continuous solubility curve

Question # 29

3.6% WN solution of HCI has the molairity

Question # 30

A solution of glucose is of methanol in water has vapor pressure :

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Sr.# Question Answer
1 The temperature at which the vapour pressure of a liquid becomes equal to external pressure is
A. Melting point
B. Sublimation point
C. Inversion point
D. Boiling point
2 An azeotropic mixture of two liquids boils at a lower temperature than either of them when :
A. It is saturated.
B. It shows positive deviation from Raoult's law.
C. It show negative deviation from Raoult's law.
D. It is metastable.
3 As compared to molar solution, in the molal solution the quantity of solvent is :
A. Comparatively lesser
B. More or less equal
C. Comparatively greater
D. Very large
4 What mass of NaOH is required to prepare 2.5 dm3of 1.5 M NaOH solution
A. 130 g
B. 140 g
C. 150 g
D. 160 g
5 Coligative properties are the properties of
A. Dilute solution which behave as nearly ideal solutions
B. Concentrated solutions which behave as nearly non-ideal solution
C. Both (i) and (ii)
D. Neither (i) and (ii)
6 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
7 The vant Hoff factor (1) accounts for
A. Degree of solubilisation of solute
B. The extent of dissolution of solute
C. The extent of dissolution of solute
D. The degree of decomposition of solution
8 Elevation of boiling point is measured by
A. Beckmann's apparatus
B. Lands Berger's method
C. Antifreeze apparatus
D. None of these above
9 Which statement is not true. A solution is a homogeneous mixture of
A. Two ionic substance like NaCl and HCl
B. Two molecular substances sugar and water
C. A solute and a solvent 1% NaHCO3in water
D. NaCl and sand
10 Hydrolysis of potassium acetate produces
A. Acidic solution
B. Neutral solution
C. Basic solution
D. None of these

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