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Pyrrole + PhMgBr → E + F<br>E + MeCl → G + H<br>F + MeCl → no reaction without a catalyst<br><img src="/images/question-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1689929390-pyrrole-phmgbr-e-f-e-mecl-g-h.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"><br>The structure of products E - H respectively are
A
3, 2, 6, 7
B
4, 5, 6, 1
C
3, 4, 5, 2
D
3, 2, 4, 5
Correct Answer:
3, 2, 6, 7
In the reaction sequence,
X and Y respectively are
A
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690023864-82-1.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
B
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690023883-82-2.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
C
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690023903-82-3.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
D
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690023919-82-4.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
The molecules(s) that exist as meso structure (s)
is/are
A
only M
B
both K and L
C
only L
D
only K
In the reaction,
if the concentration of both the reagents is doubled then the rate of the reaction will
A
remain unchanged
B
quadruple
C
reduce to one fourth
D
double
Which of the statements is correct about the mechanism of the following reaction?
A
DMSO reacts with the alcohol initially to give<br> <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 (COCl<sub>2</sub>)
B
(COCl<sub>2</sub>) reacts with the alcohol initially to give<br> <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
C
DMSO reacts with (COCl)<sub>2</sub> initially to give<br> <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
D
(COCl<sub>2</sub>) reacts with DMSO initially to give<br> <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,
the major product X is
A
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690463388-14-1.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
B
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690463399-14-2.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
C
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690463411-14-3.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
D
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690463422-14-4.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
In the reaction shown below, identify the correct combination of the intermediate P and the product Q.
A
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690350067-108-1.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
B
<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">
C
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690350207-108-3.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
D
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690350115-108-4.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
The major product of the following reaction is
A
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690530508-18-1.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
B
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690530521-18-2.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
C
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690530532-18-3.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
D
<img src="/images/option-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690530544-18-4.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image">
The reaction between X and Y to give Z proceeds via
A
4π-conrotatory opening of X followed by endo Diels-Alder cycloaddition
B
4π-disrotatory opening of X followed by endo Diels-Alder cycloaddltion
C
4π-conrotatory opening of X followed by exo Diels-Alder cycloaddition
D
4π-disrotatory opening of X followed by exo Diels-Alder cycloadditlon
The absolute configuration for compounds X and Y respectively are
A
R, S
B
S, R
C
R, R
D
S, S
The pK
a
values for the three ionisable groups X, Y and Z of glutamic acid are 4.3, 9.7 and 2.2 respectively
The isoelectric point for the amino acid is
A
7.00
B
3.25
C
4.95
D
5.95