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

Identify (X) in the sequence :

$\underset{\left(\mathrm{X}\right)}{{\mathrm{C}}_3{\mathrm{H}}_8\mathrm{O}}\underset{H_{2}S{O}_4}{\overset{K_{2}C{r}_2{O}_7}{\to }}{C}_3{H}_{6}O\underset{warm}{\overset{I_2+NaOH}{\to }}CH{I}_3$

1. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2\mathrm{OH}$

2. ${\mathrm{CH}}_3-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_3$

3. ${\mathrm{CH}}_3-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

4. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CHO}$

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

Which among the following compounds is most acidic
in character :

1. HOH

2. CH₃OH

3. CH₃CH₂OH

4. ${\mathrm{CH}}_2-\underset{{\mathrm{CH}}_3}{\overset{\mathrm{OH}}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}}-{\mathrm{CH}}_3$

Which is more acidic?

1. o-Cresol

2. p-Nitrophenol

3. Phenol

4. m-Cresol

$\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{I}\right) {\mathrm{CH}}_3\mathrm{MgI}}{\to }}X\stackrel{Cu/575 K}{\to }Y$

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 major product C and D formed in the following reaction respectively are:

H₃C-CH₂-CH₂-OC(CH₃)₃$\underset{∆}{\overset{excess HI}{\to }}$C+D

1. $H_{3}C-C{H}_2-C{H}_2-I$ and I-C(CH₃)₃

2. $H_{3}C-C{H}_2-C{H}_2-OH$ and I-C(CH₃)₃

3. $H_{3}C-C{H}_2-C{H}_2-I$ and HO-C(CH₃)₃

4.$H_{3}C-C{H}_2-C{H}_2-OH$  and HO-C(CH₃)₃

When vapour of a secondary alcohol is passed over heated copper at 573 K, the product formed is-

1. A carboxylic acid

2. An aldehyde

3. A ketone

4. An alkene

The compound that is most difficult to protonate is:

1.  

2.  

3.  

4.