HARD
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Among the following the one that gives positive iodoform test depend upon reaction with   I 2 and NaOH is –

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Important Questions on Alcohols, Phenols and Ethers

MEDIUM

Which of the following would give iodoform test?

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EASY
Which of the following compounds reacts immediately with Lucas reagent?
MEDIUM
Iodoform is obtained on heating the reaction of I2 and NaOH with
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

MEDIUM
Which of the following will not give iodoform test?
MEDIUM
Which one among the following reaction products gives iodoform test?
HARD
Match the following
  Column-1
Compound/ reagent
  Column-2
Other name / Chemical / Name of the process
A Methanol I Lucas reagent
B ZnCl2/Conc.HCl II Baeyer's reagent
C Rectified spirit III Wood spirit
D Dil. KMnO4 IV 95% C2H5OH
    V 75% C2H5OH
    VI 90% C3H7OH

The correct match is

MEDIUM

Consider the following reaction:

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The product'P'gives positive ceric ammonium nitrate test. This is because of the presence of which of theseOH group(s)?

 

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

 

MEDIUM
Amongst the following alcohols, the one that would react fastest with conc. HCl and anhydrous ZnCl2 is:
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
Ceric ammonium nitrate and CHCl3/alc. KOH are used for the identification of functional groups present in _ and _ respectively.
EASY
The compound which does not respond to iodoform test is
EASY
Which of the following method may be used to distinguish between primary, secondary and tertiary alcohols?
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
A compound 'A' of molecular formula C4H10O on treatment with Lucas' reagent at room temperature gives a compound 'B'. When the compound 'B' is heated with alcoholic KOH, it gives isobutene. The compound 'A' and 'B' respectively are