The alkene among the following that has the smallest heat of hydrogenation is-

1. ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3$

2. ${\left({\mathrm{CH}}_3\right)}_2\mathrm{C}=\mathrm{CH}-{\mathrm{CH}}_3$

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

4. ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}{\left({\mathrm{CH}}_3\right)}_2$

Which of the following alkanes will give the maximum number of isomers when a monochloro-substituted product is obtained?

1.		2.
3.	${}_{}$ \(\mathrm{CH_4}\)	4.

The correct order of relative rates of hydrogenation of alkenes is:

1. Ethylene > propene > 2-butene > 2-methyl-2-butene

2. 2-methyl-2-butene > 2-butene > Propene > Ethylene

3. 2-butene > propene > ethylene > 2-methyl-2-butene

4. Propene > 2-butene > ethylene > 2-methyl-2-butene

$\stackrel{\mathrm{NBS}}{\to }$ Products formed are   Products formed are

(A)                 (B)

(C)                        (D) 
 

(A)		(B)
(C)		(D)

1. (A) and (B) only                        2. (A) and (C) only 

3. (B) and (C) only                        4. (A), (B), (C) and (D)  

An unsaturated hydrocarbon on complete hydrogenation gives 1-isopropyl-3 methylcyclohexane, after ozonolysis it gives one mole of formaldehyde, one mole of acetone and one mole of 2,4-Dioxohexanedial. The possible structure\s of the hydrocarbon may be

1.  

2.  

3.  

4. 

Which one of the following reactions is not possible?

1. CH₃COONa + HCI → CH₃COOH + NaCI

2. CH₃–SO₃H + → CH₃SONa + 

3.  + PhONa → PhOH + 

4. + NaNH₂→  + NH₃ 

Observe the following sequence of reactions.

The product R is:

1.
2.
3.
4.

'X' is :

(1)
(2)
(3)	Both
(4)	None of these

Which of the following is a correct statement regarding the relative acidic character of cyclopropane and propane?

1. Cyclopropane is more acidic than propane

2. Propane is more acidic than cyclopropane

3. Both are equally acidic

4. Bothe are neutral

No . of products and No. of fractions are respectively

(1) 6, 5

(2) 6, 4

(3) 5, 4

(4) 6, 3