$\to_{{NH}_{3 (l)}}^{2 eq . {KNH}_{2}}$ $\to_{then H_{3} O}^{n - C_{4} H_{9} - Br}$ (P);End product (P) of the above reaction is:

1.

2.

3.

4.

Subtopic: Mechanism of Reactions |

Level 3: 35%-60%

1

2

3

4

Hints

Q57:

(A)In the above reaction, maximum Saytzeff product will obtained when
(a) X = I (b) X = -Cl (c) X = -Br (d) X = -F

(B) In the above reaction Hofmann product is major when X is:
(a) -I (b) -Cl (c) -Br (d) -F

1. A- a , B - d

2. A- b, B - c

3. A -c , B - a

4. A - d, B -d

Subtopic: Introduction and Physical Properties |

74%

Level 2: 60%+

1

2

3

4

Hints

Q58:

Product:
The product of the above mentioned reaction is:

1.		2.
3.		4.	None of the above

Subtopic: Mechanism of Reactions |

Level 3: 35%-60%

1

2

3

4

Hints

Q59:

Product obtained in above reactions (1), (2) & (3) is:
(a) A = B, C is different
(b) A = C, B is different
(c) B = C, A is different
(d) A = B = C is same

Subtopic: Mechanism of Reactions |

55%

Level 3: 35%-60%

1

2

3

4

Hints

Q60:

$C H_{3}$
$|$
$C H_{3} — C — C H — C H_{3}$
$| |$
$C H_{3} B r$ $\to_{∆}^{EtOH} (A)$

Major product (A) is:

1.

2.

3.

4.

Subtopic: Mechanism of Reactions |

70%

Level 2: 60%+

1

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3

4

Hints

Q61:

Which one of the following compound will be least susceptible to elimination of hydrogen bromide ?
(1) Br-CH₂-CH₂-NO₂

(2) Br-CH₂-CH₂-CH3

(3) Br-CH₂-CH₂-CN

(4) Br-CH₂-CH₂-Co₂Et

Subtopic: Mechanism of Reactions |

50%

Level 3: 35%-60%

1

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3

4

Hints

Q62:

Two alkenes, X(91% yield) and Y(9% yield) are formed when the following compound is heated.

The structures of X and Y, respectively are:

1.

2.

3.

4.

Subtopic: Mechanism of Reactions |

Level 3: 35%-60%

1

2

3

4

Hints

Q63:

In the dehydrohalogenation of 2-bromobutane; which conformation leads to the formation of cis-2-butene ?

(1)

(2)

(3)

(4)

Subtopic: Isomerism & Chirality |

Level 3: 35%-60%

1

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3

4

Hints

Q64:

Find the total number of moles (x + y) of NaNH₂ and CH₃I required, respectively,
to carry out the following conversion, as represented in the given reaction.

CH₃–CBr₂–CBr₂–CH₃ → CH₃–C≡C–C≡C–CH₃

Reagents: x mol NaNH₂ and y mol CH₃I

1. 5 moles
2. 6 moles
3. 7 moles
4. 8 moles

Subtopic: Introduction and Physical Properties |

Level 3: 35%-60%

1

2

3

4

Hints

Q65:

Identify A:-

1.		2.
3.		4.

Subtopic: Introduction and Physical Properties |

56%

Level 3: 35%-60%

1

2

3

4

Hints

→NH3(l)2eq.KNH2→thenH3On-C 4H9-Br(P);End product (P) of the above reaction is: 1. 2. 3. 4.

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$\to_{{NH}_{3 (l)}}^{2 eq . {KNH}_{2}}$ $\to_{then H_{3} O}^{n - C_{4} H_{9} - Br}$ (P);End product (P) of the above reaction is:

1.

2.

3.

4.