Which of the following is the strongest acid?

1. HC $\equiv$ CH

2. C₆H₆

3. C₂H₆

4. CH₃OH

$\underset{\left(Predominant\right)}{\left(\mathrm{B}\right)}\stackrel{PB{r}_{\mathit{3}}}{\leftarrow }$$\stackrel{\mathrm{HBr}}{\to }\underset{\left(Predominant\right)}{\left(A\right)}$

(A) and (B) are respectively :

$\underset{\mathrm{heat}}{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\underset{major}{P}\stackrel{NBS}{\to }\underset{major}{Q}$

The structure of Q is?

R–CH₂–CH₂–OH can be converted into
R–CH₂–CH₂–COOH. The correct sequence of
reagents is

1. PBr₃, KCN, H₃O⁺

2. PBr₃, KCN, H₂

3. KCN, H₃O⁺

4. HCN, PBr₃, H₃O⁺

$\stackrel{{\mathrm{H}}^{+}/∆}{\to }A\left(major\right)$

The product ‘A’ is

1-propanol and 2-propanol can be best distinguished
by:

1. Oxidation with alkaline KMnO₄ followed by
reaction with Fehling solution.

2. Oxidation with acidic dichromate followed by
reaction with Fehling solution

3. Oxidation by heating with copper followed by
reaction with Fehling solution.

4. Oxidation with conc. H₂SO₄
followed by reaction with Fehling solution

$\underset{\left(\mathrm{ii}\right)<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{I}\right)<mspace\; width="1em"></mspace>{\mathrm{CH}}_3\mathrm{MgI}}{\to }}X\stackrel{Cu/575<mspace\; width="1em"></mspace>K}{\to }Y$

The compound Y in the above sequence is
1. 2-Methyl-2-phenyl-1-propanol
2. 2-Phenyl-2-propanol
3. Acetophenone
4. 2-Methyl-1-Phenyl-2-propanol

The product in the below mentioned reaction is:

1.
2.
3.	C6H5OC6H5
4.	C2H5OC2H5

What is the major product in the given following reaction?

1.
2.
3.
4.