Which compound is least reactive for nucleophilic addition reaction?

(1) ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CHO}$

(2) ${\mathrm{C}}_6{\mathrm{H}}_5-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{CH}}_3$

(3) ${\mathrm{C}}_6{\mathrm{H}}_5-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{C}}_6{\mathrm{H}}_5$

(4) ${\mathrm{CH}}_3-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{CH}}_3$

Arrange the reactivity of given carbonyl compounds in decreasing order for addition reaction:

(i) $C{H}_{2}Br-CHO$

(ii) $C{H}_{2}Cl-CHO$

(iii) $C{H}_{2}I-CHO$

(iv) $C{H}_3-CHO$

Select the correct answer from the codes given below:

Codes:

(1) (iv), (iii), (ii), (i)

(2) (ii), (i), (iii), (iv)

(3) (ii), (i), (iv), (iii)

(4) (i), (ii), (iii), (iv)

Arrange the reactivity of the given compounds in decreasing order for addition followed by elimination reaction:

(i) p-Cl$-C_6{H}_4-CHO$

(ii) p-Br$-C_6{H}_4-CHO$

(iii) p-F$-C_6{H}_4-CHO$

(iv) p-I$-C_6{H}_4-CHO$

Select the correct answer from the codes given below:

Codes:

(1) (i), (iii), (ii), (iv)

(2) (i), (iii), (iv), (ii)

(3) (iii), (i), (iv), (ii)

(4) (iii), (i), (ii), (iv)

Which compound will form Schiff base with carbonyl compounds?

(1) p-amines 

(2) sec-amines

(3) bydroxylamine

(4) Hydrazine

Gem di-ether is obtained by:

(i) aldehyde, alcohol, $\stackrel{\oplus }{H}$

(ii) ketone, alcohol, $\stackrel{\oplus }{H}$

(iii) ketone, alcohol, O$\stackrel{\oplus }{H}$

(iv) aldehyde, alcohol, O$\stackrel{\oplus }{H}$

Select the correct answer from the codes given below:

Codes:

(1) (i), (ii), (iii) and (iv)

(2) (i), (ii) and (iv)

(3) (iii) and (iv)

(4) (i) and (ii)

Which among the following compounds will give addition reaction with water?

(i) $C{H}_3-CH=C{H}_2$

(ii) $C{H}_3-C\equiv CH$

(iii) $CC{l}_3-CHO$

(iv) $C{H}_3-CHO$

Select the correct answer from the codes given below:

Codes:

(1) (i), (ii), (iii)

(2) (i) and (ii)

(3) (i), (ii), (iv)

(4) only (iii)

Which among the following compounds is used for protection of carbonyl groups?

1. HCN

2. $C{H}_{3}OH$

3. 

4.  $C_2{H}_{5}OH$

In the given reaction,

$C{H}_3-C\equiv N \stackrel{H_{2}O/∆}{\to }\left(A\right)\stackrel{H_{2}O/\stackrel{\oplus }{H/∆}}{\to }\left(B\right)$

(A) and (B) respectively are:

(1) $O$
$\parallel$
$C{H}_3-C-N{H}_2 and C{H}_{3}COOH$

(2) $C{H}_{3}COON{H}_4 and C{H}_{3}COOH$

(3) $C{H}_{3}CON{H}_2 and C{H}_{3}COON{H}_4$

(4) $C{H}_3-CH=NH and C{H}_{3}COOH$

Which among the following compounds will give nucleophilic addition reaction?

(1) $O$
$\parallel$
$C_6{H}_5-C-Cl$

(2) $O$
$\parallel$
$C{H}_3-C-N{H}_2$

(3)

(4) $O$
$\parallel$
$C{H}_3-C-O{C}_2{H}_5$

Which among the following reagents can be used for the test of carbonyl group in laboratory?

1. $N{H}_{2}OH$

2. $N{H}_{2}N{H}_2$

3. $NaS{O}_{3}H$

4. $2,4-DNPH$