Chemistry PYQ 20 of 346 · Basic Concepts

Match the columns:

Column A (Process / Concept)Column B (Definition / Example)
i. Sublimation1. Separation based on boiling point
ii. Distillation2. Solid to gas directly
iii. Evaporation3. Gas to liquid
iv. Filtration4. Separation of a solid from a liquid
v. Condensation5. Liquid to gas below the boiling point
  1. Ai-4, ii-5, iii-2, iv-1, v-3
  2. Bi-3, ii-1, iii-5, iv-4, v-2
  3. Ci-1, ii-2, iii-3, iv-4, v-5
  4. Di-2, ii-1, iii-5, iv-4, v-3

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Show answer and explanation

Correct answer: (d) i-2, ii-1, iii-5, iv-4, v-3

Explanation

  • (i) Sublimation → 2: a solid changes directly into a gas without melting, as camphor, naphthalene and iodine do.
  • (ii) Distillation → 1: separates liquids by their boiling points: the liquid is boiled and its vapour condensed.
  • (iii) Evaporation → 5: a liquid turns into vapour at its surface at any temperature below its boiling point.
  • (iv) Filtration → 4: separates an insoluble solid from a liquid through filter paper.
  • (v) Condensation → 3: a gas turns into a liquid on cooling.

So the code is i-2, ii-1, iii-5, iv-4, v-3.

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