EASY
JEE Main
IMPORTANT
Earn 100

Match items of column I and II
Column I (Mixture of compounds)
Column II (Separation Technique)
A.
i. Crystallization
B. 
ii. Differential solvent extraction
C. Kerosene/Naphthalene
iii. Column chromatography
D.
iv. Fractional Distillation
B.
(a)
(b)
(c)
(d)

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques
EASY
JEE Main
IMPORTANT
In Dumas method for the estimation of , the sample is heated with copper oxide and the gas evolved is passed over:

MEDIUM
JEE Main
IMPORTANT
When a hydrocarbon undergoes complete combustion it requires equivalents of oxygen and produces equivalents of water. What is the molecular formula of ?

EASY
JEE Main
IMPORTANT
A solution of when treated with gives a prussian blue precipitate due to the formation of

MEDIUM
JEE Main
IMPORTANT
Number of isomeric compounds with molecular formula which
(i) do not dissolve in
(ii) do not dissolve in .
(iii) do not give orange precipitate with - DNP
(iv) on hydrogenation give identical compound with molecular formula is

HARD
JEE Main
IMPORTANT
All structures given below are of vitamin . Most stable of them is:

MEDIUM
JEE Main
IMPORTANT
Given below are two statements:
Statement I: Sulphanilic acid gives esterification test for carboxyl group.
Statement II: Sulphanilic acid gives red colour in Lassigne’s test for extra element detection.
In the light of the above statements, choose the most appropriate answer from the options given below:
