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

Question # 2

The sum of mole percent of all the components of solution is always equal to :

Question # 3

Which one of the following is used as antifreeze in the radiator

Question # 4

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 # 5

10g of NaOH has been dissolved per kg of solvent. The molality of solution is :

Question # 6

Mixture of alcohol and water can be separated by

Question # 7

The vapour pressure of two liquids 'p' and 'Q' are 80 and 60 torr respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mol of Q would be

Question # 8

Compared to a 1.0M aqueous solution of calcium chloride will have

Question # 9

Which is independent of temperature

Question # 10

Saturated solution of NaCl on heating becomes

Question # 11

Cane sugar is not soluble in benzene but soluble in water because

Question # 12

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

Question # 13

The substance which is present in large quantity is called a :

Question # 14

Precipitation will occur until the ionic product becomes

Question # 15

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

Question # 16

The relative lowering of vapour pressure is equal to the mole fraction of the solute, This law is called

Question # 17

Which inorganic precipitate acts as semipermeable membrane?

Question # 18

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 # 19

50 cm3of 0.05 molar nrea (N2H4CO) solution has % W/N concentration

Question # 20

The solubility of a gas in water depends upon

Question # 21

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

Question # 22

Solution which distill without change in composition or temperature are called

Question # 23

A Solution containing 6.8 g of non-ionic solute in 100g of water was found to freeze at -0.93°C. If krfor water is 1.86 and molecular mars of solute is

Question # 24

Which substances are mixed to form a buffer solution?

Question # 25

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

Question # 26

Which of the following will have the highest boiling point at 1 atm pressure?

Question # 27

Which is not a colligative property?

Question # 28

A solution of two component is called

Question # 29

(A) is one molar NaCl solution and (b) is 1 molal NaCl solutin :

Question # 30

A solutiion of 0.5 mole camphor in 100 grmas chloroform (Kb= 0.322) has rise in boiling point than that of chloroform by

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ECAT Chemistry Chapter 9 Important MCQ's

Sr.# Question Answer
1 Molarity of pure water is :
A. 33.3
B. 55.5
C. 44.4
D. 66.6
2 Precipitation will occur until the ionic product becomes
A. Equal to Ksp
B. Lesser than Ksp
C. Greater than Ksp
D. None of these
3 How many g of dibasic acid (mol. wt. 200) should be present in 100 ml of the aqueous solution to give 0.1 Normality?
A. 1 g
B. 2 g
C. 10 g
D. 20 g
4 Which is independent of temperature
A. Molarity
B. Molality
C. Normality
D. Mole fraction
5 Which is not a colligative property?
A. Osmotic pressure
B. Lowering of vapour pressure
C. Depression of freezing point
D. Elevation of boiling point
6 Which if the following has the highest freezing point at one atmosphere
A. 0.1 M NaCI
B. 0.1 M sugar solution
C. 0.1 M BaCI2
D. 0.1 M FeCI2solution
7 According to Raoult's law
A. Relative lowering of V.P. is equal to mole fraction of solute
B. The lowering of V.P. is directly proportional to mole fraction of solute
C. V.P. of solvent above solution is equal to product of V.P. of pure solvent and mole fraction of solvent ins solution
D. All of the above
8 How many cm3of 1 M H2SO4required to neutralize 10 cm3of 1 M NaOH
A. 2 cm3
B. 2.5 cm3
C. 5 cm3
D. 10 cm3
9 Which of the following solution has the highest boiling point
A. 5.85% solution of sodium chloride
B. 18.0% solution of glucose
C. 6.0% solution of urea
D. All have the same boiling point
10 Solubility of a substance in water decreases with rise in temperature except
A. CaCI2. 6H2O
B. Pb(NO3)2
C. K2Cr2O7
D. Ce2(SO4)3

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