HARDMCQ SINGLEJEE Mains ChemistryInorganic ChemistryPractical Organic ChemistryAchiever Section
Column I Column II (pair of compounds) (test to distinguish) (a) OH and OH (p) Liebermann’s nitroso test (b) (c) and NH2 Me Me NH (r) Iodoform (d) CH3– CH2 – CHO (s) Lucas and CH3– CHO (t) NaHSO3
A.(a-rs) (b-pq) (c-p) (d-r)✓ Correct
B.(a-pq) (b-rs) (c-p) (d-r)
C.(a-rs) (b-r) (c-p) (d-pq)
D.(a-rs) (b-p) (c-pq) (d-r)
Explanation
(a) These are distinguished by iodoform & lucas Test. Iodoform test is used to check the Presence of Carbonyl compound with structure 3 ||O R C CH or alcohols with 3 |OH R CH CH . Lucas test is used to distiniguish 1°, 2° & 3° alcohol on the basic of turbidity. (b) Phenol and aniline gives coloured diazo compound with diazonium compound. Colour of phenol and aniline with diazonium compound is orange and yellow respectively (c) This is distinguished by Libermann Nitroso test. This test is for 2 amines (aliphatic as well as aromatic) (d) CH3– CH2 – CHO and CH3– CHO PRACTICAL ORGANIC CHE
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