Prashnikaप्रश्निका

Phenols - ISC Class 12 Chemistry Questions with Answers, Page 2

30 past-paper questions on Phenols from ISC Class 12 Chemistry papers (2027-2018), newest first, in full. Questions 21-30 are on this page, 20 to a page. Tap "Show answer" under a question to see its answer.

Practise these questions with filters
2023 · 4 marks · MatchOpen: Match the following:
Match the following:
Column A
  • (i)Phenol
  • (ii)Ethylenediamine
  • (iii)Colligative property
  • (iv)Amino acid
Column B
  • (a)Osmotic pressure
  • (b)Zwitter ion
  • (c)Neutral $\text{FeCl}_3$ solution
  • (d)Bidentate ligand.

No answer yet.

2023 · 4 marks · Fill inOpen: Fill in the blanks by choosing the appropriate word(s) from those given in the…
Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [two, Williamson’s synthesis, three, anisole, toluene, Friedel-Crafts alkylation, iodoform, sec-1, mol-1L sec-1, Lewis base, acetone, Lewis acid, chloroform, formaldehyde]
(i)[1.0]
Sodium phenoxide reacts with methyl chloride to give ____. The reaction is known as ____.
(ii)[1.0]
When the concentration of a reactant of first order reaction is tripled, the rate of reaction becomes ____ times. The unit of rate constant ($k$) for the first order reaction is ____.
(iii)[1.0]
In coordination complexes, the central metal atom or ion behaves as ____ and the ligands behave as ____.
(iv)[1.0]
Calcium acetate on dry distillation gives ____ which gives ____ on heating with iodine and alkali.

No answer yet.

2022 · 2 marks · Short answerOpen: Phenol is heated with alcoholic KOH and chloroform: What is the name of the…
Phenol is heated with alcoholic KOH and chloroform:
(i)
What is the name of the reaction?
  • (a)Cannizzaro reaction
  • (b)Gattermann reaction
  • (c)Reimer –Tiemann reaction
  • (d)Kolbe reaction
(ii)
What is the main product formed in this reaction?
  • (a)Salicylaldehyde
  • (b)Salicylic acid
  • (c)Aniline
  • (d)Phenyl isocyanide

No answer yet.

2020 · 5 marks · Short answerOpen: Give balanced chemical equations for the following reactions: (1) Phenol is…
(i)
Give balanced chemical equations for the following reactions: (1) Phenol is treated with ice cold alkaline solution of benzene diazonium chloride. (2) Diethyl ether is treated with phosphorous pentachloride. (3) Ethyl alcohol is treated with thionyl chloride.
(ii)
Give one chemical test each to distinguish between the following pairs of compounds: (1) Ethanol and dimethyl ether (2) Propan-1-ol and propan-2-ol

No answer yet.

2020 · 5 marks · Short answerOpen: Write chemical equations to illustrate the following name reactions: (1)…
(i)
Write chemical equations to illustrate the following name reactions: (1) Williamson’s synthesis. (2) Esterification reaction (3) Reimer-Tiemann reaction.
(ii)
Identify the compounds A and B in the given reactions: (1) $\text{C}_2\text{H}_5\text{OH} \xrightarrow[\Delta]{\text{Cu}} \text{A} \xrightarrow{\text{dil. NaOH}} \text{B}$ (2) $\text{C}_6\text{H}_5\text{OH} \xrightarrow{\text{Zn dust}} \text{A} \xrightarrow[\text{anhy. AlCl}_3]{\text{CH}_3\text{COCl}} \text{B}$

No answer yet.

Questions on other pages on Phenols

Other Chemistry chapters