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Solutions Chemistry - Solutions

Maharashtra Board - STD 12 - Chemistry (MSBSHSE - Semi English Medium). 219 questions in this chapter.

Question types

Solutions question types

219 questions across 3 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

219
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3
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5
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Sample Questions

Solutions questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Lowering of vapour pressure of solution
  • A
    is a property of solute
  • B
    is a property of solute as well as solvent
  • C
    is a property of solvent
  • ✓
    is a colligative property

Answer: D.

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Q 2MCQ1 Mark
Colligative property depends only on ………………. in a solution.
  • ✓
    Number of solute particles
  • B
    Number of solvent particles
  • C
    Nature of solute particles
  • D
    Nature of solvent particles

Answer: A.

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Q 3MCQ1 Mark
When partial pressure of solvent in solution of nonvolatile solute is plotted against its mole fraction, nature of graph is
  • ✓
    a straight line passing through origin
  • B
    a straight line parallel to mole fraction of solvent
  • C
    a straight line parallel to vapour pressure of solvent
  • D
    a straight line intersecting vapour pressure axis

Answer: A.

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Q 4MCQ1 Mark
Partial pressure of solvent in solution of non-volatile solute is given by equation,
  • A
    P = x2P0
  • B
    P0 = xP
  • ✓
    P = x1P0
  • D
    P0 = x1P

Answer: C.

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Q 5MCQ1 Mark
According to the Raoult’s law, the relative lowering of vapour pressure is equal to the
  • A
    mole fraction of solvent
  • ✓
    mole fraction of solute
  • C
    independent of mole fraction of solute
  • D
    molality of solution

Answer: B.

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Q 11Answer the following in detail.4 Marks
Arrange the following solutions in order of increasing osmotic pressure. Assume complete ionization.
(a) $0.5\ m\ Li2SO4$
(b) $0.5\ m\ KCl$
(c) $0.5\ m\ Al2(SO4)3$
​​​​​​​ (d) $0.1 m BaCl2.$
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Q 12Answer the following in detail.4 Marks
Which of the following solutions will have maximum boiling point elevation and which have minimum freezing point depression assuming the complete dissociation? (a) $0.1\ m\ KCl$ (b) $0.05\ m\ NaCl$ (c) $1\ m\ AlPO_4$ (d) $0.1\ m\ MgSO_4.$
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Q 14Answer the following in detail.4 Marks
At $25 {}^\circ C$ a $0.1$ molal solution of $CH_3COOH$ is $1.35\%$ dissociated in an aqueous solution. Calculate freezing point and osmotic pressure of the solution assuming molality and molarity to be identical.
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Q 15Answer the following in detail.4 Marks
A mixture of benzene and toluene contains $30\%$ by mass of toluene. At $30{}^\circ C,$ vapour pressure of pure toluene is $36.7\  mm\ Hg$ and that of pure benzene is $118.2\ mm\ Hg.$ Assuming that the two liquids form ideal solutions, calculate the total pressure and partial pressure of each constituent above the solution at $30{}^\circ C.$
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