EASY
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What is Zeisel method?

Important Questions on Alcohols, Phenols and Ethers

MEDIUM
Which one among the following reaction products gives iodoform test?
MEDIUM
Iodoform is obtained on heating the reaction of I2 and NaOH with
MEDIUM
Phenol can be distinguished from ethanol by the reagent
MEDIUM

Which of the following reaction(s) can be used for the preparation of alkyl halides?

I. CH3CH2OH+HClAnhyd. ZnCl2

II. CH3CH2OH+HCl

III. CH33COH+HCl

IV. CH32CHOH+HClAnhyd. ZnCl2

EASY

Which of following alcohols gives white turbidity almost immediately with the Lucas reagent at room temperature?

(i) n-Butanol

(ii) tertiary-Butanol

(iii) Benzyl alcohol

(iv) Allylic alcohol

MEDIUM
An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
HARD

Two compounds A and B with same molecular formula C3H6O undergo Grignard reaction with methylmagnesium bromide to give products C and D. Products C and D show following chemical tests.

Test C D
Ceric ammonium nitrate Test Positive Positive
Lucas Test Turbidity obtained after five minutes Turbidity obtained Immediately
Iodoform Test Positive Negative

C and D respectively are

EASY

How will you obtain ethyl chloride from diethyl ether.

MEDIUM
Amongst the following alcohols, the one that would react fastest with conc. HCl and anhydrous ZnCl2 is:
EASY
The compound which does not respond to iodoform test is
EASY
Ceric ammonium nitrate and CHCl3/alc. KOH are used for the identification of functional groups present in _ and _ respectively.
MEDIUM
The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are
MEDIUM

Match the following :

  Test/Method   Reagent
(i) Lucas Test (a) C6H5SO2Cl/aq. KOH
(ii)  Dumas method (b) HNO3/AgNO3
(iii) Kjeldahl's method (c) CuO/CO3
(iv) Hinsberg Test (d) Conc. HCl and ZnCl2
    (e) H2SO4

 

EASY
Give one chemical test each to distinguish between the following pairs of compounds: Propan-1-ol and propan-2-ol.
EASY
Give balanced chemical equations for the following reactions: Diethyl ether is treated with phosphorous pentachloride.