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MHT CET Solutions Mock Test
Instructions:
- Total Questions: 20 MCQs
- Time Limit: 20 Minutes
- No negative marking.
- Do not refresh the page.
Solutions Test
20:00
Test Result
0/20
1. The unit of Henry's law constant (KH) is:
Solution: KH has the unit of pressure, e.g., bar, torr, or atm.
2. Which of the following is a colligative property?
Solution: Osmotic pressure depends only on the number of solute particles.
3. According to Raoult's law, the relative lowering of vapour pressure is equal to:
Solution: (P₀ - P)/P₀ = x₂ (Mole fraction of solute).
4. Which concentration term is independent of temperature?
Solution: Molality (m) involves mass of solvent, which does not change with temperature.
5. A mixture of Benzene and Toluene forms:
Solution: Benzene and Toluene have similar structures, forming an Ideal Solution.
6. The Van't Hoff factor (i) for K₂SO₄ assuming complete dissociation is:
Solution: K₂SO₄ dissociates into 2K⁺ + SO₄²⁻ = 3 ions. So, i = 3.
7. Ebullioscopic constant (Kb) depends on:
Solution: Kb is a characteristic property of the solvent only.
8. Isotonic solutions have the same:
Solution: Solutions having the same osmotic pressure at a given temperature are isotonic.
9. A solution of Acetone and Ethanol shows:
Solution: Acetone breaks H-bonds in ethanol, increasing vapour pressure (Positive deviation).
10. Calculate molarity: 4g NaOH in 250 mL solution. (Molar mass NaOH = 40)
Solution: Moles = 4/40 = 0.1. Vol = 0.25 L. M = 0.1/0.25 = 0.4 M.
11. Which will have the highest boiling point?
Solution: NaCl dissociates (i=2), giving more particles than glucose/urea (i=1).
12. What is the unit of Cryoscopic constant (Kf)?
Solution: From ΔTf = Kf * m, Kf = K / (mol/kg) = K kg mol⁻¹.
13. Which condition holds for an ideal solution?
Solution: Ideally, no enthalpy change (ΔH=0) and no volume change (ΔV=0) on mixing.
14. The Van't Hoff factor for Al₂(SO₄)₃ is:
Solution: Dissociates into 2Al³⁺ + 3SO₄²⁻. Total ions = 5.
15. Scuba divers face 'bends' due to bubbles of which gas?
Solution: High pressure forces Nitrogen to dissolve; surfacing bubbles it out.
16. Osmotic pressure of a solution increases by:
Solution: π = CRT. Osmotic pressure is proportional to concentration (solute amount).
17. 18g Glucose in 1kg water. Molality is:
Solution: Moles = 18/180 = 0.1 mol. Molality = 0.1/1 = 0.1 m.
18. Maximum boiling azeotrope shows:
Solution: Max boiling azeotropes show large Negative deviation (e.g., Nitric acid + Water).
19. If Van't Hoff factor i < 1, it indicates:
Solution: i < 1 implies particles decreased, meaning Association (dimerization).
20. Which law relates gas solubility in liquid with pressure?
Solution: Henry's Law relates solubility to pressure.
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