NEET UG Solutions — practice questions — page 5

Explore 125 free Solutions questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Showing questions 121–125 of 125.

Which of these is NOT a colligative property?Read the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Molarity or molality?Read the answer and worked solution →A MINIMUM-BOILING azeotrope arises from:Read the answer and worked solution →NEET · Chemistry · Colligative PropertiesRead the answer and worked solution →

Worked practice questions

Which of these is NOT a colligative property?

Boiling point elevation
Freezing point depression
Osmotic pressure
Density of solution

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Correct answer: D. Density of solution

**The 4 colligative properties:** (1) Relative lowering of vapour pressure, (2) Boiling point elevation, (3) Freezing point depression, (4) Osmotic pressure. Density depends on the nature of the solute, NOT just the number of particles, so it is NOT colligative.

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Spot the one that does not belong

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Questions

Items
1. Molarity
2. Mass of solvent
3. Volume of solution
Odd item
Mass of solvent
Items
1. Molality
2. Mass of solvent
3. Litre of solution
Odd item
Litre of solution
Items
1. Molar mass of solvent
2. Osmotic pressure
3. Colligative
Odd item
Molar mass of solvent

One measure uses a different basis. Source: syllabus Chemistry, Ch 1 Solutions.

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Molarity or molality?

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Items

Item
Per litre of solution
Category
Molarity
Item
Symbol M
Category
Molarity
Item
Uses a volume
Category
Molarity
Item
Per kilogram of solvent
Category
Molality
Item
Symbol m
Category
Molality
Item
Uses a mass
Category
Molality

Categories

Item
Molarity
Item
Molality

Molarity divides by volume of solution; molality by mass of solvent. That makes molality independent of temperature. Source: syllabus Chemistry, Ch 1 Solutions.

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