The conversion of cyclohexanol into cyclohexene is most effective with

1. Concentrated H₃PO₄

2. Concentrated HCl

3. Concentrated HCl / ZnCl₂

4. Concentrated HBr

Mark the reaction among the following that does not give benzoic acid as the major product:

1.
2.
3.
4.

Which of the following is produced when the vapours of secondary alcohol are passed over heated copper at 573 K?

The major products C and D formed in the following reaction respectively are:
\(CH_3CH_2CH_2OC{(CH_3)}_3 \xrightarrow[\Delta]{\text{Excess}\ HI}\ C + D\)

1. ${\mathrm{}}_{}$H₃C-CH₂-CH₂-I  and I-C(CH₃)₃

2. H₃C-CH₂-CH₂-OH  and I-C(CH₃)₃

3. H₃C-CH₂-CH₂-I  and HO-C(CH₃)₃

4. H₃C-CH₂-CH₂-OH  and HO-C(CH₃)₃

What is the major product in the given following reaction?

1.
2.
3.
4.

In the reaction sequence, X and Y, respectively are

1.  ${\mathrm{H}}_2{\mathrm{O}}_2;<mspace\; width="1em"></mspace>{\mathrm{LiAlH}}_4$

2.  ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOOH};<mspace\; width="1em"></mspace>{\mathrm{LiAlH}}_4$

3.  ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOOH};<mspace\; width="1em"></mspace>\mathrm{Zn}/\mathrm{Hg}.\mathrm{HCl}$

4.  $\mathrm{Alkaline}<mspace\; width="1em"></mspace>{\mathrm{KMnO}}_4;<mspace\; width="1em"></mspace>{\mathrm{LiAlH}}_4$

Two isomers, I and II, are being heated with HBr, then the products obtained are:

Choose the correct option:

1.
2.
3.
4.

The major product of the following reaction is

1.  

2.  

3.  

4.  

Phenol on treatment with dilute HNO₃ gives two products P and Q. P is steam volatile but Q is not. P and Q are, respectively:

1.
2.
3.
4.