The oxidation of benzene by V₂O₅ in the presence of air produces?

1. Benzoic anhydride

2. Maleic anhydride

3. Benzoic acid

4. Benzaldehyde

2,3-dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

1. ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CH}-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-\mathrm{CH}={\mathrm{CH}}_2$

2. ${\left({\mathrm{CH}}_3\right)}_{3}C-CH=C{H}_2$

3. ${\left({\mathrm{CH}}_3\right)}_{2}C=CH-C{H}_2-C{H}_3$

4. ${\left({\mathrm{CH}}_3\right)}_{2}CH-C{H}_2-CH=C{H}_2$

HCl with an alkene X reacts in accordance with Markovnikov’s rule to give 1-Chloro-1-methylcyclohexane. The structure of alkene (X) is:

1.		2.
3.	(1) and (2)	4.

The reaction of C₆H₅CH =CHCH₃ with HBr produces:

1.	\(C_{6} H_{5} \underset{Br}{\underset{\left|\right.}{CH}} CH_{2} CH_{3} \)
2.	\(C_{6} H_{5} CH_{2} \underset{Br}{\underset{\left|\right.}{CH}} CH_{3} \)
3.	\(C_{6} H_{5} CH_{2} CH_{2} CH_{2} Br \)
4.

Given compounds are as follows:

(I)		(II)
(III)

The enthalpy of hydrogenation of these compounds will be in the order as-

When subjected to ozonolysis, which compound results in the formation of the given molecule?


 

1.		2.
3.		4.

The product(s) that are formed when the given compound is treated with Br₂ in the presence of FeBr₃ are:
 

1.		2.	and
3.	and	4.	and

Which of the following organic compounds has same hybridization as its combustion product –(CO₂)?

The isobutyl group among the following is:

1.
2.	CH3–CH2–CH2–CH2–
3.
4.