Identify the correct set of stereochemical relationships amongst the following monosaccharides I-IV <img src="/images/question-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1689847086-identify-the-correct-set-of-stereochemical-relationships.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">

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

Correct Answer: I and III are anomers; I and II are epimers

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

For the compound,

the stereochemical notations are

2Z, 4R

2Z, 4S

2E, 4R

2E, 4S

In the reaction shown below, identify the correct combination of the intermediate P and the product Q.

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

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

In the reaction,

if the concentration of both the reagents is doubled then the rate of the reaction will

remain unchanged

quadruple

reduce to one fourth

double

The major product of the following reaction is

Three molecular ionic states, P-R are possible for the amino acid histidine. Identify the correct choice of pH values, respectively for the observation of the ionic states P-R.

P at pH 1; Q at pH 12; R at pH 7

P at pH 7; Q at pH 1; R at pH 12

P at pH 12; Q at pH 7; R at pH 1

P at pH 12; Q at pH 1; R at pH 7

In the reaction,

the major product X is

In the reaction sequence,

X and Y respectively are