In the reaction shown below, identify the correct combination of the intermediate P and the product Q. <img src="/images/question-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690350053-in-the-reaction-shown-below-identify-the.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">

Correct Answer: <img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690350082-108-2.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">

Identify the major product P in the following two-step reaction:

For the aldotetroses I-IV, the combination of true statements, among P-T, is

P = I and II are diastereomers and II and III are enantiomers
Q = I and IV are mesomers and are optically inactive
R = I and III can be interconverted by a base catalysed isomerisation
S = only I and IV are HlO₄ cleavable
T = I and III are D-sugars and II and IV are L-sugars

Q, R, T

P, R, T

Q, R, S, T

P, Q, S

In the reaction,

the major product X is

The major product of the following reaction is

Identify the correct stereochemical relationship amongst the hydrogen atoms H_a, H_b and H_c in the following molecule

Ha and Hb : enantiotopic

Ha and Hb : diastereotopic

Ha and Hc : enantiotopic

Ha and Hc : diastereotopic

Identify the correct set of stereochemical relationships amongst the following monosaccharides I-IV

I and II are anomers; III and IV are epimers

I and III are epimers; II and IV are anomers

I and II are epimers; III and IV are anomers

I and III are anomers; I and II are epimers

The most suitable reagent combination to bring out the following transformation

is

Which of the statements is correct about the mechanism of the following reaction?

DMSO reacts with the alcohol initially to give <img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690014825-34-1.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"> which reacts with (COCl2)

(COCl2) reacts with the alcohol initially to give <img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690014272-34-2.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"> which reacts with DMSO

DMSO reacts with (COCl)2 initially to give <img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690014850-34-3.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"> which reacts with the alcohol

(COCl2) reacts with DMSO initially to give <img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690014865-34-4.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"> which reacts with the alcohol

The major product (X) of the monobromination reaction is

The major product P of the following reaction is