Solution A & B are formed by dissolving a certain amount of glucose and sucrose in water. The Vapour pressure of these solutions is 660 and 560 mm Hg respectively at 100oC. The ratio of molality of solutions A & B will be:-

1. 1433     
2. 3314
3. 1535
4. 3515

Subtopic:  Concentration Terms & Henry's Law |
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Saturated solution of Ag2SO4 shows 0.003K rise in boiling point, Ksp will be :(Kb = 5 K kg mol-1)(1m=1M)

1. 3.2 x 10-11

2.  3.2 x 10-10

3.  3.2 x 10-9

4.  3.2 x 10-12

Subtopic:  Elevation of Boiling Point |
 53%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

When 36 g of a solute having the empirical formula CH2O is dissolved in 1.2 kg of water, the solution freezes at -0.93°C. What is the molecular formula of solute (K= 1.86 kg K mol-1)

(1) C2H4O

(2) C2H2O2
(3) C2H4O3

(4) C2H4O2

Subtopic:  Depression of Freezing Point |
 76%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

6g urea is dissolved in 1kg solvent. Value of (T1-T2) will be : (Kf=2 kg K mol-1)

1. 0.2°C
2. -0.2°C
3. 0.1°C
4. -0.1 K

Subtopic:  Depression of Freezing Point |
 63%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

A solution containing 0.03659 g/ml of HCl and a solution containing 0.04509 g/ml of acetic acid Then:

(1) NHCl is more

(2)NCH3COOH is more

(3) Both have same normality

(4) None of these

Subtopic:  Concentration Terms & Henry's Law |
 56%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The lubricating action of an oil is more if it possess:-

(1) High vapour pressure

(2) low vapour pressure

(3) High surface tension

(4) High density

Subtopic:  Relative Lowering of Vapour Pressure |
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

When 0.1 m CH3COOH is present in a solvent it shows elevation in boiling point of 0.75°C. Acid dissociation constant will be -(Kb=5 K Kg mol-1) (1M =1m)

(1) 5 X 10-2

(2) 5 X 10-3

(3) 10-2

(4) 10-3 

Subtopic:  Van’t Hoff Factor |
 62%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following shows positive deviation from Raoult's law:

(i) Chloroform and acetone

(ii) Carbon disulphide and acetone

(iii) Ethanol and Acetone

(iv) Phenol and Aniline

(1) i and ii

(2) ii and iii

(3) i and iv

(4) ii and iv

Subtopic:  Raoult's Law |
 71%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

A non-volatile solute is dissolved in water. If its degree of association is 50%. What will be its freezing point when the boiling point is 100.52°C. [Kb=0.52 K kg mol-1, Kf=1.86K kg mol-1]

1. -0.52 K

2. -0.52°C

3. -1.86°C

4. 275.01 K

Subtopic:  Depression of Freezing Point |
 73%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh

When 36 g of a solute having the emperical formula CH2O is dissolved in 1.2 kg of water, the solution freezes at -0.93°C. What is the molecular formula of solute (Kf=1.86 kg K mol-1)

(1) C2H4O

(2) C2H2O2

(3) C2H4O3

(4) C2H4O2

Subtopic:  Depression of Freezing Point |
 80%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh