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MCQ's Test For ECAT Chemistry Chapter 9 Solutions
Try The MCQ's Test For ECAT Chemistry Chapter 9 Solutions
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 9 Solutions
00:00
Question # 1
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 # 2
In which type of following solutions we don't know the total volume of the solutions :
Question # 3
Which if the following has the highest freezing point at one atmosphere
Question # 4
What is the molarity of the solution that contains 20 grams of NaOH in 500 ml of solution [Na = 23, O = 16, H = 1]
Question # 5
Solutions containing relatively lower concentrations of solute are called :
Question # 6
Which of the following half molar solutions will have lowest freezing point
Question # 7
The process in which water molecules surround solute particles is called
Question # 8
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 # 9
The molarity of solution containing 14.5 grams urea (N2H4CO) dissolved in 100 cm3of the solution is
Question # 10
Colligative properties are the properties of :
Question # 11
Which of the statements given below concerning properties of solution, describe a colligative effect?
Question # 12
Osmotic pressure of a solution increases by
Question # 13
The substance which is present in large quantity is called a :
Question # 14
An azeotropic mixture of two liquids boils at a lower temperature than either of them when lower temperature
Question # 15
The number of moles of solute in 1000g (1 Kg) of the solvent is called :
Question # 16
Which of the following solution has the highest boiling point
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
Aqueous solution of glucose C6H12O6, boils at 100.052°C. The solution contains
Question # 19
Which one of the following is used as antifreeze in the radiator
Question # 20
A solution can be
Question # 21
Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution
Question # 22
A solution is a homogeneous mixture of two or more kinds different :
Question # 23
Question # 24
Compared to a 1.0M aqueous solution of calcium chloride will have
Question # 25
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 # 26
If liquids A and B form an ideal solution
Question # 27
10g of NaOH has been dissolved per kg of solvent. The molality of solution is :
Question # 28
Which statement is not true. A solution is a homogeneous mixture of
Question # 29
Which inorganic precipitate acts as semipermeable membrane?
Question # 30
If 5.85 of NaCI are dissolved in 90g of water the mole fraction of NaCI is
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ECAT Chemistry Chapter 9 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | 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 |
A. 4 N
B. 2 N
C. 0.4 N
D. 0.2 N
|
| 3 | The term cryoscopy is used for |
A. Depression of freezing point
B. Elevation in boiling poing
C. Lowering of vapour pressure
D. Osmotic pressure
|
| 4 | 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 |
A. 13.6
B. 34
C. 68
D. 136
|
| 5 | Precipitation will occur until the ionic product becomes |
A. Equal to Ksp
B. Lesser than Ksp
C. Greater than Ksp
D. None of these
|
| 6 | An azeotropic mixture showing it's positive deviation from Raoult's law, the volume of the mixture is : |
A. Slightly more than the total volume of the components.
B. Slightly less than the total volume of the components.
C. Equal to the total volume of the components.
D. None of these.
|
| 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 |
A. 140 torr
B. 20 torr
C. 68 torr
D. 72 torr
|
| 8 | The concentration units independent of temperature would be |
A. Normality
B. Mass-volume precent
C. Molality
D. Molarity
|
| 9 | 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
|
| 10 | A solutiion of 0.5 mole camphor in 100 grmas chloroform (Kb= 0.322) has rise in boiling point than that of chloroform by |
A. 0.81°C
B. 1.61°C
C. 1.81°C
D. 0.61°C
|
Test Questions