In the given reaction
CH2N2/hν→N2 gas
The product will be:
1.
2.
3. Mixture of 1 and 2
4. CH3-CH2-CH2-CH2-CH3
Which compound is least reactive for nucleophilic addition reaction?
(1) C6H5CHO
(2) C6H5-O||C-CH3
(3) C6H5-O||C-C6H5
(4) CH3-O||C-CH3
Arrange the reactivity of given carbonyl compounds in decreasing order for addition reaction:
(i) CH2Br-CHO
(ii) CH2Cl-CHO
(iii) CH2I-CHO
(iv) CH3-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-C6H4-CHO
(ii) p-Br-C6H4-CHO
(iii) p-F-C6H4-CHO
(iv) p-I-C6H4-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, ⊕H
(ii) ketone, alcohol, ⊕H
(iii) ketone, alcohol, O⊕H
(iv) aldehyde, alcohol, O⊕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) CH3-CH=CH2
(ii) CH3-C≡CH
(iii) CCl3-CHO
(iv) CH3-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. CH3OH
3.
4. C2H5OH
In the given reaction,
CH3-C≡N H2O/∆→(A)H2O/⊕H/∆→(B)
(A) and (B) respectively are:
(1) O
∥
CH3-C-NH2 and CH3COOH
(2) CH3COONH4 and CH3COOH
(3) CH3CONH2 and CH3COONH4
(4) CH3-CH=NH and CH3COOH
Which among the following compounds will give nucleophilic addition reaction?
(1) O
∥
C6H5-C-Cl
(2) O
∥
CH3-C-NH2
(3)
(4) O
∥
CH3-C-OC2H5