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1. Solution and colligative properties Chemistry - 1. Solution and colligative properties

CBSE - STD 12 Science - Chemistry (CBSE - English Medium). 1,004 questions in this chapter.

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1. Solution and colligative properties question types

1,004 questions across 1 question group — pick any mix to generate a Chemistry paper with step-by-step answer keys.

1,004
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1
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5
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Sample Questions

1. Solution and colligative properties questions

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

Q 2M.C.Q (1 Marks)1 Mark
The plot of osmotic pressure (П) vs concentration $\left(\mathrm{mol} \mathrm{L}^{-1}\right)$ for a solution gives a straight line with slope $25.73 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1}$. The temperature at which the osmotic pressure measurement is done is

(Use $\mathrm{R}=0.083 \mathrm{~L}$ bar mol $\mathrm{m}^{-1} \mathrm{~K}^{-1}$ )

  • A
     $310^{\circ} \mathrm{C}$
  • B
    $25.73^{\circ} \mathrm{C}$
  • C
     $12.05^{\circ} \mathrm{C}$
  • ✓
     $37^{\circ} \mathrm{C}$

Answer: D.

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Q 3M.C.Q (1 Marks)1 Mark
The Henry's law constant $\left(\mathrm{K}_H\right)$ values of three gases $(A, B, C)$ in water are $145,2 \times 10^{-5}$ and $35$ kbar, respectively. The solubility of these gases in water follow the order:
  • A
     $B>C>A$
  • B
     $A>C>B$
  • C
    $A > B > C$
  • D
    $B > A > C$
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Q 4M.C.Q (1 Marks)1 Mark
The following solutions were prepared by dissolving $10\, \mathrm{~g}$ of glucose $\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)$ in $250 \,\mathrm{ml}$ of water $\left(\mathrm{P}_{1}\right)$, $10\, \mathrm{~g}$ of urea $\left(\mathrm{CH}_{4} \mathrm{~N}_{2} \mathrm{O}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{2}\right)$ and $10\, \mathrm{~g}$ of sucrose $\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{3}\right)$. The right option for the decreasing order of osmotic pressure of these solutions is :
  • ✓
    $\mathrm{P}_{2}>\mathrm{P}_{1}>\mathrm{P}_{3}$
  • B
    $\mathrm{P}_{1}>\mathrm{P}_{2}>\mathrm{P}_{3}$
  • C
    $\mathrm{P}_{2}>\mathrm{P}_{3}>\mathrm{P}_{1}$
  • D
    $\mathrm{P}_{3}>\mathrm{P}_{1}>\mathrm{P}_{2}$

Answer: A.

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Q 5M.C.Q (1 Marks)1 Mark
The correct option for the value of vapour pressure of a solution at $45^{\circ} \mathrm{C}$ with benzene to octane in molar ratio $3: 2$ is  ...... $\mathrm{mm}$ of $\mathrm{Hg}$

[At $45^{\circ} \mathrm{C}$ vapour pressure of benzene is $280\, \mathrm{~mm} \,\mathrm{Hg}$ and that of octane is $420\, \mathrm{~mm} \,\mathrm{Hg}$. Assume Ideal gas]

  • A
    $160$
  • B
    $168$
  • C
    $336$
  • D
    $350$
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