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Solutions Practice Questions - DPP for NEET

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 Page 1


PART-I (Single Correct MCQs)
1. The solubility of a solid in a liquid is significantly affected by
temperature changes.
Solute + Solvent  Solution.
The  system being in a dynamic equilibrium must followLe-chatelier’s
principle. Considering the Le-chatelier’s principle which of the
following is correct?
(a) ??
sol
 > 0; solubility ; temperature
(b) ??
sol
 < 0; solubility ; temperature
(c) ??
sol
 > 0; solubility ; temperature
(d) ??
sol
 < 0; solubility ; temperature
2. The vapour pressure of a solution of the liquids A (p° = 80 mm Hg and 
 = 0.4) and B (p°= 120 mm Hg and  = 0.6) is found to be 100
mm Hg. It shows that the solution exhibits
(a) positive deviation from ideal behaviour
Page 2


PART-I (Single Correct MCQs)
1. The solubility of a solid in a liquid is significantly affected by
temperature changes.
Solute + Solvent  Solution.
The  system being in a dynamic equilibrium must followLe-chatelier’s
principle. Considering the Le-chatelier’s principle which of the
following is correct?
(a) ??
sol
 > 0; solubility ; temperature
(b) ??
sol
 < 0; solubility ; temperature
(c) ??
sol
 > 0; solubility ; temperature
(d) ??
sol
 < 0; solubility ; temperature
2. The vapour pressure of a solution of the liquids A (p° = 80 mm Hg and 
 = 0.4) and B (p°= 120 mm Hg and  = 0.6) is found to be 100
mm Hg. It shows that the solution exhibits
(a) positive deviation from ideal behaviour
(b) negative deviation from ideal behaviour
(c) ideal behaviour
(d) positive deviation for lower conc. and negative for higher conc.
3. Henry’s law constant of oxygen is 1.4 × 10
–3
 mol. lit
–1
. atm
–1
 at 298 K.
How much of oxygen is dissolved in 100 mL at 298 K when the partial
pressure of oxygen is 0.5 atm?
(a) 1.4 g
(b) 3.2 g
(c) 22.4 mg
(d) 2.24 mg
4. A solution containing components A and B follows Raoult’s law when
(a) A – B attraction force is greater than A – A and B – B
(b) A – B attraction force is less than A – A and B – B
(c) A – B attraction force remains same as A–A and B –B
(d) Volume of solution is different from sum of volume of solute and
solvent
5. Two 1-litre flask  A and B are connected to each other by a valve which
is closed. Flask A has benzene in equilibrium with its vapours at 30°C.
The flask B, is evacuated, and the valve is opened. Which of the
following is true. If temperature is kept constant.’
(a) Some of the benzene molecules would move to flask B from flask A.
(b) Vapour pressure will be half the initial value.
(c) The vapour pressure remains unchanged
(d) Some more of the liquid benzene in flask A would evaporate.
6. For a solution of two liquids A and B it was proved that 
. The resulting solution will be
(a) Non -ideal
(b) ideal
Page 3


PART-I (Single Correct MCQs)
1. The solubility of a solid in a liquid is significantly affected by
temperature changes.
Solute + Solvent  Solution.
The  system being in a dynamic equilibrium must followLe-chatelier’s
principle. Considering the Le-chatelier’s principle which of the
following is correct?
(a) ??
sol
 > 0; solubility ; temperature
(b) ??
sol
 < 0; solubility ; temperature
(c) ??
sol
 > 0; solubility ; temperature
(d) ??
sol
 < 0; solubility ; temperature
2. The vapour pressure of a solution of the liquids A (p° = 80 mm Hg and 
 = 0.4) and B (p°= 120 mm Hg and  = 0.6) is found to be 100
mm Hg. It shows that the solution exhibits
(a) positive deviation from ideal behaviour
(b) negative deviation from ideal behaviour
(c) ideal behaviour
(d) positive deviation for lower conc. and negative for higher conc.
3. Henry’s law constant of oxygen is 1.4 × 10
–3
 mol. lit
–1
. atm
–1
 at 298 K.
How much of oxygen is dissolved in 100 mL at 298 K when the partial
pressure of oxygen is 0.5 atm?
(a) 1.4 g
(b) 3.2 g
(c) 22.4 mg
(d) 2.24 mg
4. A solution containing components A and B follows Raoult’s law when
(a) A – B attraction force is greater than A – A and B – B
(b) A – B attraction force is less than A – A and B – B
(c) A – B attraction force remains same as A–A and B –B
(d) Volume of solution is different from sum of volume of solute and
solvent
5. Two 1-litre flask  A and B are connected to each other by a valve which
is closed. Flask A has benzene in equilibrium with its vapours at 30°C.
The flask B, is evacuated, and the valve is opened. Which of the
following is true. If temperature is kept constant.’
(a) Some of the benzene molecules would move to flask B from flask A.
(b) Vapour pressure will be half the initial value.
(c) The vapour pressure remains unchanged
(d) Some more of the liquid benzene in flask A would evaporate.
6. For a solution of two liquids A and B it was proved that 
. The resulting solution will be
(a) Non -ideal
(b) ideal
(c) semi-ideal
(d) None of these
7. All form ideal solution except
(a) C
6
H
6
 and C
6
H
5
 CH
3
(b) C
2
H
6
 and C
2
H
5
I
(c) C
6
H
5
Cl and C
6
H
5
Br
(d) C
2
H
5 
I and C
2
H
5
 OH.
8. A binary liquid solution is prepared by mixing n-heptane and ethanol.
Which one of the following statements is correct regarding the
behaviour of the solution?
(a) The solution is non-ideal, showing – ve deviation from Raoult’s
Law.
(b) The solution is non-ideal, showing + ve deviation from Raoult’s
Law.
(c) n-heptane shows + ve deviation while ethanol shows– ve deviation from
Raoult’s Law.
(d) The solution formed is an ideal solution.
9. During depression of freezing point in a solution the following are in
equilibrium
(a) liquid solvent, solid solvent
(b) liquid solvent, solid solute
(c) liquid solute, solid solute
(d) liquid solute, solid solvent
10. Which of the following modes of expressing concentration is independent
of temperature ?
Page 4


PART-I (Single Correct MCQs)
1. The solubility of a solid in a liquid is significantly affected by
temperature changes.
Solute + Solvent  Solution.
The  system being in a dynamic equilibrium must followLe-chatelier’s
principle. Considering the Le-chatelier’s principle which of the
following is correct?
(a) ??
sol
 > 0; solubility ; temperature
(b) ??
sol
 < 0; solubility ; temperature
(c) ??
sol
 > 0; solubility ; temperature
(d) ??
sol
 < 0; solubility ; temperature
2. The vapour pressure of a solution of the liquids A (p° = 80 mm Hg and 
 = 0.4) and B (p°= 120 mm Hg and  = 0.6) is found to be 100
mm Hg. It shows that the solution exhibits
(a) positive deviation from ideal behaviour
(b) negative deviation from ideal behaviour
(c) ideal behaviour
(d) positive deviation for lower conc. and negative for higher conc.
3. Henry’s law constant of oxygen is 1.4 × 10
–3
 mol. lit
–1
. atm
–1
 at 298 K.
How much of oxygen is dissolved in 100 mL at 298 K when the partial
pressure of oxygen is 0.5 atm?
(a) 1.4 g
(b) 3.2 g
(c) 22.4 mg
(d) 2.24 mg
4. A solution containing components A and B follows Raoult’s law when
(a) A – B attraction force is greater than A – A and B – B
(b) A – B attraction force is less than A – A and B – B
(c) A – B attraction force remains same as A–A and B –B
(d) Volume of solution is different from sum of volume of solute and
solvent
5. Two 1-litre flask  A and B are connected to each other by a valve which
is closed. Flask A has benzene in equilibrium with its vapours at 30°C.
The flask B, is evacuated, and the valve is opened. Which of the
following is true. If temperature is kept constant.’
(a) Some of the benzene molecules would move to flask B from flask A.
(b) Vapour pressure will be half the initial value.
(c) The vapour pressure remains unchanged
(d) Some more of the liquid benzene in flask A would evaporate.
6. For a solution of two liquids A and B it was proved that 
. The resulting solution will be
(a) Non -ideal
(b) ideal
(c) semi-ideal
(d) None of these
7. All form ideal solution except
(a) C
6
H
6
 and C
6
H
5
 CH
3
(b) C
2
H
6
 and C
2
H
5
I
(c) C
6
H
5
Cl and C
6
H
5
Br
(d) C
2
H
5 
I and C
2
H
5
 OH.
8. A binary liquid solution is prepared by mixing n-heptane and ethanol.
Which one of the following statements is correct regarding the
behaviour of the solution?
(a) The solution is non-ideal, showing – ve deviation from Raoult’s
Law.
(b) The solution is non-ideal, showing + ve deviation from Raoult’s
Law.
(c) n-heptane shows + ve deviation while ethanol shows– ve deviation from
Raoult’s Law.
(d) The solution formed is an ideal solution.
9. During depression of freezing point in a solution the following are in
equilibrium
(a) liquid solvent, solid solvent
(b) liquid solvent, solid solute
(c) liquid solute, solid solute
(d) liquid solute, solid solvent
10. Which of the following modes of expressing concentration is independent
of temperature ?
(a) Molarity
(b) Molality
(c) Formality
(d) Normality
11. How many grams of concentrated nitric acid solution should be used to
prepare 250 mL of 2.0M HNO
3
 ? The concentrated acid is 70% HNO
3
(a) 90.0 g conc. HNO
3
(b) 70.0 g conc. HNO
3
(c) 54.0 g conc. HNO
3
(d) 45.0 g conc. HNO
3
12. Which among the following will show maximum osmotic pressure?
(a) 1 M NaCl
(b) 1 M MgCl
2
(c) 1 M (NH
4
)
3
PO
4
(d) 1 M Na
2
SO
4
13. The boiling point of 0.2 mol kg
–1
 solution of X in water is greater than
equimolal solution of Y in water. Which one of the following
statements is true in this case ?
(a) Molecular mass of X is greater than the molecular mass of  Y.
(b) Molecular mass of X is less than the molecular mass of Y.
(c) Y is undergoing dissociation in water while X undergoes no change.
(d) X is undergoing dissociation in water.
14. Which of the following 0.10 m aqueous solutions will have the lowest
freezing point ?
(a) Al
2
(SO
4
)
3
(b) C
6
H
12
O
6
Page 5


PART-I (Single Correct MCQs)
1. The solubility of a solid in a liquid is significantly affected by
temperature changes.
Solute + Solvent  Solution.
The  system being in a dynamic equilibrium must followLe-chatelier’s
principle. Considering the Le-chatelier’s principle which of the
following is correct?
(a) ??
sol
 > 0; solubility ; temperature
(b) ??
sol
 < 0; solubility ; temperature
(c) ??
sol
 > 0; solubility ; temperature
(d) ??
sol
 < 0; solubility ; temperature
2. The vapour pressure of a solution of the liquids A (p° = 80 mm Hg and 
 = 0.4) and B (p°= 120 mm Hg and  = 0.6) is found to be 100
mm Hg. It shows that the solution exhibits
(a) positive deviation from ideal behaviour
(b) negative deviation from ideal behaviour
(c) ideal behaviour
(d) positive deviation for lower conc. and negative for higher conc.
3. Henry’s law constant of oxygen is 1.4 × 10
–3
 mol. lit
–1
. atm
–1
 at 298 K.
How much of oxygen is dissolved in 100 mL at 298 K when the partial
pressure of oxygen is 0.5 atm?
(a) 1.4 g
(b) 3.2 g
(c) 22.4 mg
(d) 2.24 mg
4. A solution containing components A and B follows Raoult’s law when
(a) A – B attraction force is greater than A – A and B – B
(b) A – B attraction force is less than A – A and B – B
(c) A – B attraction force remains same as A–A and B –B
(d) Volume of solution is different from sum of volume of solute and
solvent
5. Two 1-litre flask  A and B are connected to each other by a valve which
is closed. Flask A has benzene in equilibrium with its vapours at 30°C.
The flask B, is evacuated, and the valve is opened. Which of the
following is true. If temperature is kept constant.’
(a) Some of the benzene molecules would move to flask B from flask A.
(b) Vapour pressure will be half the initial value.
(c) The vapour pressure remains unchanged
(d) Some more of the liquid benzene in flask A would evaporate.
6. For a solution of two liquids A and B it was proved that 
. The resulting solution will be
(a) Non -ideal
(b) ideal
(c) semi-ideal
(d) None of these
7. All form ideal solution except
(a) C
6
H
6
 and C
6
H
5
 CH
3
(b) C
2
H
6
 and C
2
H
5
I
(c) C
6
H
5
Cl and C
6
H
5
Br
(d) C
2
H
5 
I and C
2
H
5
 OH.
8. A binary liquid solution is prepared by mixing n-heptane and ethanol.
Which one of the following statements is correct regarding the
behaviour of the solution?
(a) The solution is non-ideal, showing – ve deviation from Raoult’s
Law.
(b) The solution is non-ideal, showing + ve deviation from Raoult’s
Law.
(c) n-heptane shows + ve deviation while ethanol shows– ve deviation from
Raoult’s Law.
(d) The solution formed is an ideal solution.
9. During depression of freezing point in a solution the following are in
equilibrium
(a) liquid solvent, solid solvent
(b) liquid solvent, solid solute
(c) liquid solute, solid solute
(d) liquid solute, solid solvent
10. Which of the following modes of expressing concentration is independent
of temperature ?
(a) Molarity
(b) Molality
(c) Formality
(d) Normality
11. How many grams of concentrated nitric acid solution should be used to
prepare 250 mL of 2.0M HNO
3
 ? The concentrated acid is 70% HNO
3
(a) 90.0 g conc. HNO
3
(b) 70.0 g conc. HNO
3
(c) 54.0 g conc. HNO
3
(d) 45.0 g conc. HNO
3
12. Which among the following will show maximum osmotic pressure?
(a) 1 M NaCl
(b) 1 M MgCl
2
(c) 1 M (NH
4
)
3
PO
4
(d) 1 M Na
2
SO
4
13. The boiling point of 0.2 mol kg
–1
 solution of X in water is greater than
equimolal solution of Y in water. Which one of the following
statements is true in this case ?
(a) Molecular mass of X is greater than the molecular mass of  Y.
(b) Molecular mass of X is less than the molecular mass of Y.
(c) Y is undergoing dissociation in water while X undergoes no change.
(d) X is undergoing dissociation in water.
14. Which of the following 0.10 m aqueous solutions will have the lowest
freezing point ?
(a) Al
2
(SO
4
)
3
(b) C
6
H
12
O
6
(c) KCl
(d) C
12
H
22
O
11
15. If sodium sulphate is considered to be completely dissociated into
cations and anions in aqueous solution, the change in freezing point of
water (?T
f
), when 0.01 mol of sodium sulphate is dissolved in 1 kg of
water, is  (K
f
 = 1.86 K kg mol
–1
)
(a) 0.372 K
(b) 0.0558 K
(c) 0.0744 K
(d) 0.0186 K
16. Which one of the following salts will have the same value of van’t Hoff
factor (i) as that of  K
4
[Fe(CN)
6
].
(a) Al
2
(SO
4
)
3
(b) NaCl
(c) Al(NO
3
)
3
(d) Na
2
SO
4
.
17. Mole fraction of the solute in a 1.00 molal aqueous solution is :
(a) 0.1770
(b) 0.0177
(c) 0.0344
(d) 1.7700
18. 25.3 g of sodium carbonate, is dissolved in enough water to
make 250 mL of solution. If sodium carbonate dissociates completely,
molar concentration of sodium ions,  and carbonate ions, 
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FAQs on Solutions Practice Questions - DPP for NEET

1. What is NEET?
Ans. NEET stands for National Eligibility cum Entrance Test. It is a national level entrance examination in India for students who wish to pursue undergraduate medical and dental courses in government or private colleges.
2. How can I prepare for NEET effectively?
Ans. To prepare for NEET effectively, it is important to have a structured study plan, focus on understanding concepts rather than memorizing, practice regularly with previous year question papers and mock tests, seek guidance from experienced teachers or coaching institutes, and maintain a healthy study routine with proper rest and nutrition.
3. Are Daily Practice Problems (DPP) helpful for NEET preparation?
Ans. Yes, Daily Practice Problems (DPP) can be extremely helpful for NEET preparation. Regularly solving practice problems can improve your understanding of concepts, enhance problem-solving skills, and boost confidence. DPPs also help in identifying weak areas that need more focus and provide an opportunity to revise topics on a daily basis.
4. How can I effectively utilize the solutions provided in the DPP for NEET?
Ans. To effectively utilize the solutions provided in the DPP for NEET, it is important to attempt the practice problems on your own first before referring to the solutions. Once you have attempted the questions, compare your answers with the provided solutions to identify any mistakes or gaps in understanding. Analyze the solutions to understand the correct approach and learn from any errors made during the initial attempt.
5. Are there any specific tips to manage time during the NEET exam?
Ans. Yes, here are some tips to manage time during the NEET exam: - Read the question carefully and understand it before attempting. - Prioritize questions based on difficulty and time required. - Do not spend too much time on a single question. If you are stuck, move on and come back to it later if time permits. - Practice time management during mock tests and simulate exam-like conditions. - Avoid spending excessive time on calculations. Use approximation techniques to save time. - Keep an eye on the time and allocate it wisely among different sections.
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