IIT JEE/IIT JEE Solutions Mcq Questions Part-1 Sample Test,Sample questions

Question:
1 mole of sugar (non-volatile) is dissolved in two moles of water the vapour pressure of the solution relative to that of pure solvent is




3/2

1.3-Jan

2.2-Jan

3.3-Feb

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
100 gram of caustic soda is dissolved in 1 kg of water the molality of the solution is




1.3.3

2.2

3.25

4.2.5

Posted Date:-2021-09-29 09:07:38


Question:
Amount of the substance required to prepare one litre of 2N solution is




2 gm. Mole

1.3 gm eq.

2.2 gm.

3.2 gm eq.

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
An azeotrope is one that




1.can be separated by distillation below critical solution temperature

2.can be separated by distillation above critical solution temperature

3.can be separated by distillation at critical solution temperature

4.cannot be separated by distillation

Posted Date:-2021-09-29 09:07:38


Question:
At low concentration the statement that equimolar solutions under given set of conditions have equal osmotic pressures is true for




1.solutions of non-electrolytes only

2.solutions of electrolytes only

3.all solutions

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
Compared to osmotic pressure of 0.01 M glucose the osmotic pressure of 0.01 M sodium chloride will be




1.approximately half

2.approximately twice

3.nearly thrice

4.None of these

Posted Date:-2021-09-29 09:07:38


Question:
Energy is absorbed when a substance dissolves in water if




1.lattice energy is less than lattice energy

2.hydration energy is less than lattice energy

3.hydration energy is positive

4.lattice energy is negative

Posted Date:-2021-09-29 09:07:38


Question:
Equivalent weight of ammonia is

14/3
17
2.7
31

1.14/3

2.17

3.2.7

4.31

Posted Date:-2021-09-29 09:07:38


Question:
Equivalent weight of anhydrous oxalic acid is




1.45

2.54

3.36

4.72

Posted Date:-2021-09-29 09:07:38


Question:
he osmotic pressure of a solution in the shortest possible time can be measured by




1.Michelson and Moseley method

2.Barkely and Hartley method

3.Vant Hoff method

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
If 5.85 g of NaCl are dissolved in 90 g of water the mole fraction of the solute is




1.0.25

2.0.12

3.1.96

4.0.0196

Posted Date:-2021-09-29 09:07:38


Question:
If two solutions A and B are separated by a semipermeable membrane and if the liquid flows from A to B then




1.A is more concentrated than B

2.A is less concentrated than B

3.Both solutions have same concentration

4.No information is available regarding relative concentrations

Posted Date:-2021-09-29 09:07:38


Question:
In an aqueous solution of sulphuric acid mole fraction of water is 0.85. The molality of the solution is




1.14 m

2.9.8 m

3.7.9 m

4.8.9 m

Posted Date:-2021-09-29 09:07:38


Question:
In the case of non-ideal solutions the enthalpy change taking place




1.is equal to five

2.is less than zero

3.is more than zero

4.may be less or more than zero

Posted Date:-2021-09-29 09:07:38


Question:
Isotonic solutions have the same




1.density

2.normality

3.molar concentration

4.None of these

Posted Date:-2021-09-29 09:07:38


Question:
The depression in freezing point method is used for the molecular mass determination of


non-volatile and insoluble solvent

volatile and insoluble solute

1.non-volatile and insoluble solvent

2.non-volatile and insoluble solvent

3.non-volatile and soluble solute

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
The mole fraction of sodium chloride in 1000 gm of water is




1.0.3

2.0.0077

3.1.777

4.0.0177

Posted Date:-2021-09-29 09:07:38


Question:
The number of moles of NaCl in 3 litres of the 3 M solution is




1.9

2.5

3.27

4.36

Posted Date:-2021-09-29 09:07:38


Question:
The osmotic pressure of a solution is increased if




1.number of molecules of solute is increased

2.temperature is increased

3.volume is increased

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
The vapour pressure of pure liquid A is 70 torr at 27 degreeCentigrade. It forms an ideal solution with another liquid B. The mole fraction of B is 0.2 and total pressure of the solution is 84 torr at 27degreeCentigrade. The vapour pressure of pure liquid is




1.140 torr

2.90 torr

3.112 torr

4.28 torr

Posted Date:-2021-09-29 09:07:38


Question:
The weight of calcium hydroxide in 100 ml of 0.01 molar solution will be




1.36.5 g

2.0.148 g

3.0.074 g

4.22.4 g

Posted Date:-2021-09-29 09:07:38


Question:
The weight of silver nitrate required to prepare 60 ml of 0.03 gm per ml of AgNO will be




1.1.8 gm

2.0.18 gm

3.2.5 gm

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
When 0.2 litre of 1 M NaOH solution and 1.0 litre of 1M solution of H2SO4 are mixed the resulting solution will be




neutral

1.acidic in nature

2.basic in nature

3.strongly alkaline

4.None of the above

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following does not act as semi-permeable membrane?


Sodium sulphate

1.Potassium oxalate

2.Sodium sulphate

3.Parchment

4.Cellophane

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following is temperature independent?




1.N

2.m

3.M

4.F

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following shows positive deviation from Raoults law?




1.Acetone and ethyl alcohol

2.Ethyl alcohol and cyclohexane

3.Acetone and chloroform

4.Benzene and toluene

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following solutions will have the lowest freezing point?




1.1% aqueous solution of sodium chloride

2.1% aqueous solution of methyl alcohol

3.1% aqueous solution of fructose

4.1% aqueous solution of urea

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following solutions would exhibit abnormal osmotic pressure?




1.Urea

2.Sucrose

3.Fructose

4.Common salt

Posted Date:-2021-09-29 09:07:38


Question:
Which of the following would have maximum osmotic pressure assuming that they are completely dissociated in water?




 

1.Decinormal aluminium sulphate

2.Decinormal potassium sulphate

3.Decinormals barium chloride

4.A solution obtained by mixing equal

Posted Date:-2021-09-29 09:07:38


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