A compound that does not undergo S_N1 reaction with OH^- is:

1.	CH2=CH-CH2Cl	2.	(CH3)3CCl
3.		4.

Find the correct sequence of the bond enthalpy of the "C-X" bond among the following:

1. CH₃-F < CH₃-Cl > CH₃-Br > CH₃-I

2. CH₃-Cl > CH₃-F > CH₃-Br > CH₃-I

3. CH₃-F < CH₃-Cl < CH₃-Br < CH₃-I

4. CH₃-F > CH₃-Cl > CH₃-Br > CH₃-I

The major product formed in the dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on:

The correct reaction among the following is:

1.
2.
3.	\(2CH_3CH_2Br\xrightarrow[dry~ether]{Mg}CH_3CH_2CH_2CH_3\)
4.	\(2CH_3CH_2Br\xrightarrow[Ethanol]{Na}CH_3CH_2CH_2CH_3\)

The product formed in the following reaction sequence is:
 

1.
2.	\(CH_3-CH=CH-CH_3 \)
3.	\(CH_3 -CH_2 -CH = CH_2 \)
4.	\(CH_3 -CH_2 -CH_2 -CH_2 -OH \)