$\underset{\mathrm{ii}·∆}{\overset{\mathrm{i}·{\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7}{\to }}$X; X is

1. 

2.

3.

4.

$\stackrel{\mathrm{cold} {\mathrm{KMnO}}_4}{\to }$P $\underset{\mathrm{AcOH}}{\overset{{\mathrm{CrO}}_3}{\to }}$Q$\stackrel{{\mathrm{NH}}_2{\mathrm{NH}}_2/{\mathrm{OH}}^{-}}{\to }$ R compound R and R :-

(1) Identical (Homomer)

(2) Not isomer

(3) Positional isomer

(4) Function group isomer

$\stackrel{\mathrm{PCC}}{\to }$$A \underset{{\mathrm{H}}^{+}}{\overset{{\mathrm{CH}}_3{\mathrm{NH}}_2}{\to }} B$$\stackrel{{\mathrm{H}}_2/\mathrm{Pd}-\mathrm{C}}{\to }$Product

Product is

1.

2.

3.

4.

$\stackrel{\mathrm{Zn}-\mathrm{Hg}/\mathrm{HCl}}{\to }$Product, Product is

1.    2.

3.    4.

For the given reactions,
 


The formula for z would be:

1. CH$\equiv$CH

2. CHI₃

3. Ph-COONa

4. CH₂=CH₂

$\underset{\mathrm{Zn}/{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{O}}_3\left(\mathrm{I} \mathrm{mole}\right)}{\to }}$ P$\underset{∆}{\overset{\mathrm{NaOH}}{\to }}$  Q; Q is

1.

2.

3.

4.

The given two compounds can be distinguished by: 

and

a. I₂+NaOH

b. NaSO₃H

c. NaCN/HCl

d. 2,4-DNP

1. a, b, d

2. a, b

3. a, c, d

4. a, d

Fehling solution gives red precipitated with

(a) Aromatic aldehyde

(b) Aliphatic aldehyde

(c) Ketone

(d) terminal $\mathrm{\alpha }$-Hydroxy ketone

_{1. b,d}

_{2. a,b}

_{3. a,d}

_{4. b,c}

Which of the following  gives aldol condensation

(1)

(2)

(3)

(4)