Solutions Test

Solutions

This is Solutions Test-03 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The tanks used by divers are filled with air diluted with
  • A
    Nitrogen
  • B
    Hydrogen
  • C
    Argon
  • D
    Helium
    Correct
2
Greater the value of KH, lower will be the
  • A
    Temperature
  • B
    Concentration
  • C
    Solubility
    Correct
  • D
    Pressure
3
Which among the following is soluble in water?
  • A
    Chloroform
  • B
    Phenol
  • C
    Formic acid
    Correct
  • D
    Benzene
4
Which among the following is soluble in n-octane?
  • A
    Ethylene glycol
  • B
    Hexane
    Correct
  • C
    Chloroform
  • D
    Methanol
5
The use of pressure cooker reduces cooking time because it creates
  • A
    Low temperature
  • B
    High pressure
    Correct
  • C
    High temperature
  • D
    Low pressure
6
In pressure cooker boiling point of water
  • A
    Remain constant
  • B
    Decreases
  • C
    Sometimes increases and sometimes decreases
  • D
    Increases
    Correct
7
A solute is soluble in two immiscible liquids which are present in a mixture. The concentration of the solute in the upper layer will be
  • A
    In fixed ratio with that in the lower layer
    Correct
  • B
    Less than that in the lower layer
  • C
    More than that in the lower layer
  • D
    Same as that in the lower layer
8
Camphor is often used in molecular mass determination because
  • A
    It has very high cryoscopic constant
    Correct
  • B
    It is a solvent for organic substances
  • C
    It is readily available
  • D
    It is volatile
9
Ethylene glycol is added to water as antifreeze. It will
  • A
    Only increase the boiling point
  • B
    Only decrease the freezing point
  • C
    Increase the freezing point of water in winter and increase the boiling point of water in summer
    Correct
  • D
    It is used to clean the radiator in car
10
The molarity of 900 g of water is
  • A
    50 M
    Correct
  • B
    55.5 M
  • C
    Cannot be calculated
  • D
    5 M
11
An aqueous solution of methanol and water has vapour pressure
  • A
    Equal to that of methanol
  • B
    More than that of water
    Correct
  • C
    Less than that of water
  • D
    Equal to that of water
12
Which has highest freezing point at 1 atm?
  • A
    0.1 molal NaCl solution
  • B
    0.1 molal$ FeCl_3$ solution
  • C
    0.1 molal sugar solution
    Correct
  • D
    0.1 molal $BaCl_2$ solution
13
Which of the following has highest boiling point?
  • A
    0.1 molal sugar solution
  • B
    0.1 molal urea solution
  • C
    0.1 molal NaCl solution
  • D
    0.1 molal $BaCl_2$ solution
    Correct
14
A solution showing a large positive deviation from ideal behaviour has
  • A
    None of these
  • B
    higher boiling point than both the components
  • C
    Lower boiling point than both the components
    Correct
  • D
    $ΔH_{mix}$ is negative
15
Solution of hydrogen in palladium is an example of
  • A
    Solid in solid
  • B
    Gas in gas
  • C
    Liquid in gas
  • D
    Gas in solid
    Correct