✓ Board-verified
Chemistry · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 2 · Q15
Assertion (A): Elevation in boiling point is a colligative property. Reason (R): The lowering of vapour pressure of solution causes elevation in…
Assertion (A) : Elevation in boiling point is a colligative property.
Reason (R) : The lowering of vapour pressure of solution causes elevation in boiling point.
Official answer
(B)
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
More from Solutions
- 0.3 g of acetic acid (M=60 g mol^-1) dissolved in 30 g of benzene shows a depression in freezing point equal to 0.45^° C. Calculate the percentage…2023 · asked 2×
- Assertion: Osmotic pressure is a colligative property. Reason (R): Osmotic pressure is proportional to the molality.2023
- A solution containing 8.0 g of a non-volatile solute in 100 g of diethyl ether boils at 36.86 °C whereas pure diethyl ether boils at 35.60 °C.…2026
- A 6% solution of glucose (molar mass=180 g mol^-1 ) is isotonic with 2.5% solution of an unknown organic substance. Calculate the molecular weight of…2024
- A compound undergoes complete tetramerization in a given organic solvent. The Van't Hoff factor ' i ' is:2023
- Define molal depression constant. How is it related to enthalpy of fusion? OR What type of deviation is shown by ethanol and acetone mixture? Give…2024
- Value of Henry's constant K_H:2023
- When a liquid and its vapour are at equilibrium and the pressure is suddenly decreased:2026
CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.