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

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

Question # 2

A solution containing maximum amount of solute dissolved at a given temperature is called

Question # 3

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

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

The volume of 0.1 M H2SO4required to neutralize completely 40 ml of 0.2 M NaOH solution is

Question # 6

Maximum freezing point falls in

Question # 7

Solutions containing relatively lower concentrations of solute are called :

Question # 8

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

Question # 9

Which statement is incorrect for and ideal solution

Question # 10

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 # 11

Aqueous solution of glucose C6H12O6, boils at 100.052°C. The solution contains

Question # 12

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

Question # 13

1.0 g pure calcium carbonate was found to require 50 ml of dilute HCl for complete reaction. The strength of HCl solution is given by

Question # 14

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

Question # 15

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

Question # 16

Elevation of boiling point is measured by

Question # 17

Molarity of pure water is :

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Freezing point depression is measured by

Question # 22

Which is independent of temperature

Question # 23

How much of NaOH is required to neutralize 1500 cm3of 0.1 N HCl?

Question # 24

17.1 grams sucrose (C12H22O11) dissolved in 250 cm3 of solution. This has molarity

Question # 25

The substance which contains the water of crystallization is called

Question # 26

Hydrolysis of potassium acetate produces

Question # 27

A solution can be

Question # 28

The depression of freezing point is directly proportional to

Question # 29

Which of the following is a colligative property?

Question # 30

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

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ECAT Chemistry Chapter 9 Important MCQ's

Sr.# Question Answer
1 Saturated solution of a solid is prepared at a constant temperature. 100 cm3of this saturated solution is evaporated in a china dish. The mass of the residue is called
A. Azetropic mixture
B. Solubility
C. Solubility product
D. Equilibrium constant
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 Equal volumes of 0.1 M AgNO3and 0.2 M NaCl are mixed. The concentration of NO-3 ions in the mixture will be
A. 0.1 M
B. 0.05 M
C. 0.2 M
D. 0.15 M
4 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
5 0.1 molar glucose (C6H12O6) solution has the % W/N
A. 1.8%
B. 18%
C. 0.18%
D. 2.8%
6 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
7 Which of the following salts mixed with ice to make the freezing mixture used in ice cream machine
A. KNO3
B. NH4NO3
C. AgNO3
D. Mg(NO3)2
8 What is the molarity of a solution containing 15.0 g urea in 500 cm3of solution
A. 0.5 M
B. 1 M
C. 1.5 M
D. 2 M
9 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
10 The molarity of the solution containing x grams (NH4)2SO4in 500 cm3of the solution is 0.6 what is x
A. 39.6
B. 45.1
C. 40.5
D. 42.7

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