Tests of Alcohols

IMPORTANT

Tests of Alcohols: Overview

This Topic covers sub-topics such as Iodoform Test, Lucas Test, Victor Meyer's Test, Some Other Tests of Alcohols and, Methods to Distinguish Primary, Secondary and Tertiary Alcohols

Important Questions on Tests of Alcohols

MEDIUM
IMPORTANT

The chemical tests used to distinguish between compounds in the following pairs of substances are

(i) Ethanal and propanal

(ii) Benzoic acid and ethyl benzoate

HARD
IMPORTANT

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

MEDIUM
IMPORTANT

Compound that will give yellow precipitate with sodium hypoiodite is

EASY
IMPORTANT

Which of the following method may be used to distinguish between primary, secondary and tertiary alcohols?

MEDIUM
IMPORTANT

Lucas test is used for the determination of _______

MEDIUM
IMPORTANT

Which of the following reacts fastest with a mixture of anhydrous ZnCl2 and concentrated HCl?

EASY
IMPORTANT

Match the following

  Column I   Column II
(A) Lucas reagent (I) SnCl2+HCl,H3O+
(B) Clemmensen reagent (II) AgNH32+
(C) Tollens'reagent (III) Anhydrous ZnCl2 conc. HCl
(D) Stephen reaction (IV) Zn-Hg conc. HCl
    (V) C6H5SO2Cl

HARD
IMPORTANT

C6H10O3 (Keto ester) (A)NaOH+I2Yellow precipitate+(B)H(C)-CO2CH3COOH. (A) and (B) are:

EASY
IMPORTANT

By which of the following tests,  1°, 2° and 3° alcohols can be distinguished?

MEDIUM
IMPORTANT

Select the incorrect statements from the following:

HARD
IMPORTANT

Select the incorrect order

MEDIUM
IMPORTANT

When Lucas reagent is made to react with an alcohol, which among the following will react the fastest and with which mechanism?

EASY
IMPORTANT

Cloudiness that appear during Lucas test of alcohols is due to the formation of:

EASY
IMPORTANT

Which test will be negative for acetaldehyde?

EASY
IMPORTANT

What is X in the following reaction?

            CH3H3C-C||-OH            CH3t-butylalcoholX            CH3H3C-C||-Cl            CH3t-butylchloride.

HARD
IMPORTANT

Which of the following on reactions with nitrous acid, followed by treatment with NaOH produces a blue coluration?

EASY
IMPORTANT

The compound which reacts fastest with Lucas reagent at room temperature is

MEDIUM
IMPORTANT

The alcohol that reacts faster with Lucas reagent is

EASY
IMPORTANT

Methanol and ethanol are distinguished by the