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

1. CH3-CH=CH-CH3

2. CH32C=CH-CH3

3. CH2=CH-CH2-CH3

4. CH3-CH=CH-CHCH32

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 57%
Level 3: 35%-60%
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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.

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
Level 3: 35%-60%
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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

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 59%
Level 3: 35%-60%
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NBS 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)  

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 3: 35%-60%
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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. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 53%
Level 3: 35%-60%
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Which one of the following reactions is not possible?

1. CH3COONa + HCI → CH3COOH + NaCI

2. CH3–SO3H + → CH3SONa + 

3.  + PhONa → PhOH + 

4. + NaNH2→  + NH3 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 3: 35%-60%
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Observe the following sequence of reactions.

The product R is:

1. 
2.
3.
4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 55%
Level 3: 35%-60%
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'X' is :

(1) 
(2)
(3)Both
(4)None of these
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 57%
Level 3: 35%-60%
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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

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
Level 2: 60%+
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No . of products and No. of fractions are respectively

(1) 6, 5

(2) 6, 4

(3) 5, 4

(4) 6, 3

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 53%
Level 3: 35%-60%
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