Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Basics of Organic Chemistry question

2023 · 30 Jan · Shift 2 · Q9
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Basics of Organic Chemistry
  5. /2023 · 30 Jan · Shift 2 · Q9

Basics of Organic Chemistry question

2023 · 30 Jan · Shift 2 · Q9

JEE MainChemistryBasics of Organic ChemistryMCQ+4 / −1

Match List I with List II:

List I (Mixture) List II (Separation Technique)
A. CHCl3+C6H5NH2\mathrm{CHCl}_3+\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2CHCl3​+C6​H5​NH2​ I. Steam distillation
B. C6H14+C5H12\mathrm{C}_6 \mathrm{H}_{14}+\mathrm{C}_5 \mathrm{H}_{12}C6​H14​+C5​H12​ II. Differential extraction
C. C6H5NH2+H2O\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2+\mathrm{H}_2 \mathrm{O}C6​H5​NH2​+H2​O III. Distillation
D.  Organic compound in H2O\text { Organic compound in } \mathrm{H}_2 \mathrm{O} Organic compound in H2​O IV. Fractional distillation
  1. A
    A-III, B-I, C-IV, D-II
  2. B
    A-II, B-I, C-III, D-IV
  3. C
    A-IV, B-I, C-III, D-II
  4. D
    A-III, B-IV, C-I, D-II
View written solutionFree

Correct answer: D

  1. Identify the appropriate separation method for each mixture

We match each mixture in List I with the most suitable technique in List II.

  1. A. CHCl3+C6H5NH2\mathrm{CHCl_3 + C_6H_5NH_2}CHCl3​+C6​H5​NH2​
  • Chloroform (CHCl3)\left(\mathrm{CHCl_3}\right)(CHCl3​) and aniline (C6H5NH2)\left(\mathrm{C_6H_5NH_2}\right)(C6​H5​NH2​) are miscible liquids.
  • Their boiling points are quite different:
    • CHCl3≈61∘C\mathrm{CHCl_3} \approx 61^\circ \mathrm{C}CHCl3​≈61∘C
    • aniline ≈184∘C\approx 184^\circ \mathrm{C}≈184∘C
  • Since the boiling point difference is large, simple distillation is suitable.

So, A→IIIA \to IIIA→III

  1. B. C6H14+C5H12\mathrm{C_6H_{14} + C_5H_{12}}C6​H14​+C5​H12​
  • Hexane and pentane are miscible volatile liquids.
  • Their boiling points are close:
    • pentane ≈36∘C\approx 36^\circ \mathrm{C}≈36∘C
    • hexane ≈69∘C\approx 69^\circ \mathrm{C}≈69∘C
  • Such mixtures are separated by fractional distillation.

So, B→IVB \to IVB→IV

  1. C. C6H5NH2+H2O\mathrm{C_6H_5NH_2 + H_2O}C6​H5​NH2​+H2​O
  • Aniline is steam volatile and is immiscible/slightly soluble in water.
  • Organic compounds that are steam volatile and water-immiscible are separated by steam distillation.

So, C→IC \to IC→I

  1. D. Organic compound in H2O\mathrm{H_2O}H2​O
  • To separate an organic compound dissolved or suspended in water, we commonly use differential extraction using a suitable organic solvent.

So, D→IID \to IID→II

  1. Final matching

Thus, A−III,  B−IV,  C−I,  D−IIA-III,\; B-IV,\; C-I,\; D-IIA−III,B−IV,C−I,D−II

This corresponds to Option D.

  1. Comparison with stored correct answer

Stored correct answer = D

Our derived answer = D

Hence, they agree.

PreviousNext

More from Basics of Organic Chemistry

  • Match items of column I and II Correct match is Includes table Includes diagram2023 · MCQ
  • Number of electrophilic centres in the given compound is ​. Includes diagram2022 · Numerical
  • Which of the following is an example of conjugated diketone?2022 · MCQ
  • Arrange the following carbocations in decreasing order of stability. Includes diagram2022 · MCQ
  • Arrange the following in decreasing acidic strength. Includes diagram2022 · MCQ
  • The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the base line are 3.25 cm, 2.08 cm and 1.05 cm, respectively. The ratio of Rf values of…2022 · Numerical
  • The total number of monobromo derivatives formed by the alkanes with molecular formula C5​H12​ is (excluding stereo isomers) ​.2022 · Numerical
  • The IUPAC name of ethylidene chloride is :2022 · MCQ