Ethanal reacts with HCN and the addition product so obtained is hydrolyzed to form a new compound. The compound shows

1. Optical isomerism

2. Geometrical isomerism

3. Tautomerism

4. Metamerism

Ethyl acetate on reaction with excess of methyl magnesium chloride and dil. H₂SO₄ gives

1. dimethyl ketone

2. iso propyl alcohol

3. ethyl aceto acetate

4. t-butyl alcohol

A mixture of benzaldehyde and formaldehyde on heating with aqueous (conc.)NaOH       solution gives

1. benzyl alcohol and sodium formate

2. sodium benzoate and methyl alcohol

3. sodium benzoate and sodium formate

4. none of these

For the reaction:

Which reagent will be appropriate for the above conversion?

1. Zn-Hg/HCl

2. NH₂-NH₂/OH^-

3. LiAlH₄/H^$\oplus$

4. HI/P

Identify (X) in the given sequential reaction.

1. CH₃OH

2. Ethyl alcohol

3. Methyl cyanide

4. tert-Butyl alcohol

Phenolphthalein is produced on heating phthalic anhydride and conc. sulphuric acid with

1. Salicylic acid

2. Phenol

3. Phenacetin

4. Phenanthrene

The compound Y in the above sequence of reactions is:

 

1. 1-Phenylethene

2. 2-Phenyl-2-propanol

3. Acetophenone

4. Benzaldehyde

In the following reaction:

The structure of the major product 'X' is

(1)

(2)

(3)

(4)

The compound A can be exclusively oxidized into ​​​B by:
 

1. NaCN, followed by hydrolysis

2. NaOI, followed by H₃O⁺

3. KMnO₄(hot), followed by hydrolysis

4. K₂Cr₂O₇, followed by H₃O⁺

X $\underset{∆}{\overset{{\mathrm{KMnO}}_4}{\leftarrow }}$$\stackrel{∆}{\to }$Y

In the above reaction, X and Y are:

1. Identical

2. Homologous

3. Structural Isomers

4. Stereoisomers