NTSE Stage 2 SAT 2018 Exam Question Paper

Question : 27 of 100

Marks: +1, -0

An organic liquid ‘A’ with acidified potassium dichromate gave product ‘B’. The compound ‘B’ on heating with methanol in presence of concentrated sulphuric acid formed compound ‘C’ which on subsequent treatment with sodium hydroxide formed two product ‘D’ and ‘E’. The product ‘D’ is known to affect the optic nerve causing blindness. Intake of ‘D’ in very small quantities can cause death. What are compound ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’?

A = Ethanol, B = Ethanoic acid, C = Methanol D = Sodium acetate, E = Methyl ethanoate
A = Ethanol, B = Ethanoic acid, C = Methyl ethanoate D = Methanol, E = Sodium acetate
A = Sodium acetate, B = Ethanoic acid, C = Methyl ethanoate, D = Methanol, E = Ethanol
A = Ethanol, B = Ethanoic acid, C = Methyl ethanoate, D = Sodium acetate, E = Methanol

Validate

Solution:

CH_2CH_2OH{––––––––>}↖{{K_2Cr_2O_7}↖{\text "Acidfied"}}CH_3COOH

(A) (B)

CH_3COOH+CH_3OH{––––––––>}↖{{H_2SO_4}↖{\text "conc."}}CH_3COOCH_3+H_2O

(B) (D)

{\text "Methyl ethanoate"}↙{(C)}

↓NaOH

{CH_3COONa}↙{(\E)}+{CH_3OH}↙{\(D)}

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