SN1 & SN2 Reactions Recommended PYQs (STRICTLY NCERT Based) Reaction Mechanism - Organic Chemistry Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Which one is most reactive towards S_N1 reaction?

1. $C_{6} H_{5} C H (C_{6} H_{5}) B r$

2. $C_{6} H_{5} C H (C H_{3}) B r$

3. $C_{6} H_{5} C (C H_{3}) (C_{6} H_{5}) B r$

4. $C_{6} H_{5} C H_{2} B r$

Subtopic: SN1 & SN2 Reactions |

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Which of the following reactions is an example of a nucleophilic substitution reaction?

1. RX + KOH → ROH + KX

2. 2RX + 2Na →R — R + 2NaX

3. RX + H₂→RH + HX

4. RX + Mg →RMg X

Subtopic: SN1 & SN2 Reactions |

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In a S_N2 substitution reaction of the type
$\mathrm{R}-\mathrm{Br}+\mathrm{Cl}^{-} \xrightarrow{\mathrm{DMF}} \mathrm{R}-\mathrm{Cl}+\mathrm{Br}^{-}$

one of the following that has the highest relative rate is:

1.	$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}$	2.
3.		4.	$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}$

Subtopic: SN1 & SN2 Reactions |

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1.	\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}\)	2.
3.		4.	\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)

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