Recommended PYQs (STRICTLY NCERT Based) Haloalkanes and Haloarenes Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

The compound that will undergo

S_{N}^{1}

$S_N~^1$ reaction with the fastest rate is:

1.		2.
3.		4.

Subtopic: Mechanism of Reactions |

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Q2:

What are the major products A and B formed in the following reaction sequence?

1.
2.
3.
4.

Subtopic: Chemical Properties |

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Q3:

{CCl}_{2} F_{2}

$\text{CCl}_2\text{F}_2$ is one of the most common haloalkanes used in industries. The reaction through which it is manufactured from tetrachloromethane is called:

1. Finkelstein reaction
2. Sandmeyer's reaction
3. Swarts reaction
4. Wurtz-Fittig reaction

Subtopic: Chemical Properties |

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Q4:

Which of the following is the most preferred method for preparing pure alkyl chlorides from alcohols?

1.

R - O H + H C l \overset{{Z n C l}_{2}}{\to} R - C l + H_{2} O

$\mathrm{{R}-{OH}+{HCl} \xrightarrow{{ZnCl}_2} {R}-{Cl}+{H}_2 {O}}$
2.

R - O H + {P C l}_{5} \to R - C l + {P O C l}_{3} + H C l

$\mathrm{{R}-{OH}+{PCl}_5 \rightarrow {R}-{Cl}+{POCl}_3+{HCl}}$
3.

R - O H + {S O C l}_{2} \to R - C l + {S O}_{2} + H C l

$\mathrm{{R}-{OH}+{SOCl}_2 \rightarrow {R}-{Cl}+{SO}_2+{HCl}}$
4.

R - O H + {P C l}_{3} \to R - C l + H_{3} {P O}_{3}

$\mathrm{{R}-{OH}+{PCl}_3 \rightarrow {R}-{Cl}+{H}_3 {PO}_3}$

Subtopic: Introduction and Physical Properties |

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Q5:

The major product C in the below-mentioned reaction is:

1.	Propan-1-ol	2.	Propan-2-ol
3.	Propane	4.	Propyne

Subtopic: Mechanism of Reactions |

83%

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Q6:

The following reaction method

is not suitable for the preparation of the corresponding haloarene products, due to the high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br

Subtopic: Chemical Properties |

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Q7:

The following compound would be classified as:

1.	Vinylic halide	2.	Benzylic halide
3.	Aryl halide	4.	Allylic halide

Subtopic: Introduction and Physical Properties |

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Q8:

The correct order for the rate of

α

$\alpha$ ,

β

$\beta$ -dehydrohalogenation for the following compounds is:

(i)	(ii)
(iii)

1.	(i) < (ii) < (iii)	2.	(ii) < (i) < (iii)
3.	(iii) < (ii) < (i)	4.	(ii) < (iii) < (i)

Subtopic: Chemical Properties |

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Q9:

A reaction among the following can generate isonitriles as a major product.

A.

R - X + H C N \to

$R-X + HCN \rightarrow$
B.

R - X + A g C N \to

$R-X + AgCN \rightarrow$
C.

R - X + K C N \to

$R-X + KCN \rightarrow$
D.

R - X + N a C N \to_{C_{2} H_{5} O H}^{H_{2} O}

$R-X + NaCN \xrightarrow [C_2H_5OH] {H_2O}$

Choose the most appropriate answer from the options given below:

1.	(D) only	2.	(C) and (D) only
3.	(B) only	4.	(A) and (B) only

Subtopic: Chemical Properties |

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Q10:

Identify 'X' in the following reaction.

1.		2.
3.		4.

Subtopic: Chemical Properties |

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