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Solution Chemistry - Solution

Rajasthan Board (RBSE) - STD 12 Science - Chemistry (Rajasthan - English Medium). 64 questions in this chapter.

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64 questions across 6 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

64
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6
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Sample Questions

Solution questions

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

Q 1M.C.Q (1 Marks)1 Mark
Which of the following is a property of ideal solution?
  • ✓
    Obeys Raoult's Law
  • B
    Does not obey Raoult's Law
  • C
    Both (a) and (b)
  • D
    None of the above

Answer: A.

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Q 3M.C.Q (1 Marks)1 Mark
Which of the following show positive deviation from Raoult's law?
  • ✓
    $ C_{6}H_{6} $ and $ C_{6}H_{5}CH_{3} $
  • B
    $ C_{6}H_{6} $ and $ CCl_{4} $
  • C
    $ CHCl_{3} $ and $ C_{2}H_{5}OH $
  • D
    $ CHCl_{3} $ and $ CH_{3}COCH_{3} $

Answer: A.

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Q 132 Marks Questions2 Marks
18 g of glucose ($ C_{6}H_{12}O_{6} $) was added to 1 kg of water at 1.013 bar atmospheric pressure in a vessel. At which temperature will water boil? $ K_{b} $ for $ H_{2}O $ is 0.52 K kg $ mol^{-1} $.
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Q 163 Marks Question3 Marks
Calculate the mass of ascorbic acid (Vitamin C, $ C_{6}H_{8}O_{6} $) to be dissolved in 75 g of acetic acid to lower its melting point by $ 1.5^{\circ}C $. ($ K_{f} $ for $ CH_{3}COOH = 3.9 K kg mol^{-1} $)
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Q 173 Marks Question3 Marks
State Raoult's Law for solution containing volatile solutes. Write two Characteristics of the solutions which obeys Raoult's law at all concentrations.
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Q 183 Marks Question3 Marks
A 4% solution (w/w) of sucrose (M = 342 g $ mol^{-1} $) in water has a freezing point of 271.15 K. Calculate the freezing point of 5% glucose (M = 180 g $ mol^{-1} $) in water. (Given: Freezing point of pure water = 273.15 K)
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Q 193 Marks Question3 Marks
Calculate the freezing point of a solution containing 60 g of glucose (Molar mass = 180 g $ mol^{-1} $) in 250 g of water. ($ K_{f} $ of water = 1.86 K kg $ mol^{-1} $)
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Q 203 Marks Question3 Marks
(a) What do you mean by the term 'Depression of freezing point'?
(b) State Raoult's Law of depression of freezing point? How is it useful in determining the molecular weight of non-volatile and non-electrolyte.
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Q 215 Marks Questions5 Marks
What do you mean by elevation of boiling point and molal elevation constant? Give the formula or equation to determine the molar mass from elevation of boiling point.
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Q 264 Marks Questions4 Marks
Calculate the boiling point of solution when 2 g of $ Na_{2}SO_{4} $ (m = 142 g $ Mol^{-1} $) was dissolved in 50 g of water, assuming $ Na_{2}SO_{4} $ undergoes complete ionization?
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