Which of the following compounds will show cis-trans isomerism? (i)(CH 3 ) 2 C = CH-C 2 H 5 (ii) CH 2 = CBr 2 (iii) C 2 H 5 CH = CH-CH 2 (iv) CH 3 CH = CClCH 3 - Wired Faculty

Hydrocarbons

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Which of the following compounds will show cis-trans isomerism?

(i)(CH₃)₂C = CH-C₂H₅
(ii) CH₂ = CBr₂(iii) C₂H₅CH = CH-CH₂
(iv) CH₃CH = CClCH₃

Solution

Structure (iii) and structural (iv) show cis-trans isomerism while structure (i) and (ii) do not show cis-trans isomerism because two identical groups are attached to one of the doubly bonded carbon atoms.

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Hydrocarbons

Which of the following compounds will show cis-trans isomerism?

(i)(CH₃)₂C = CH-C₂H₅
(ii) CH₂ = CBr₂(iii) C₂H₅CH = CH-CH₂
(iv) CH₃CH = CClCH₃

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Alkanes are less reactive. Why?

Out of n-pentane, isopentane and neopentane which has lower boiling point?

During the pyrolysis of alkanes C-C bonds break in preference to C-H bond. Why?

Define cracking.

What is the function of iodic acid in the iodination of alkanes? Can we use any other substance in its place?

What is alternation effect?

Arrange the following compounds in order of their increasing boiling points:
n-Pentane, n-Hexane, Ethane, 2-2-Dimethylpentane, 2-Methylpentane.

Why is light or heat necessary to initiate chlorination reaction of alkanes?

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Hydrocarbons

Which of the following compounds will show cis-trans isomerism?(i)(CH3)2C = CH-C2H5(ii) CH2 = CBr2(iii) C2H5CH = CH-CH2(iv) CH3CH = CClCH3

Some More Questions From Hydrocarbons Chapter

Alkanes are less reactive. Why?

Out of n-pentane, isopentane and neopentane which has lower boiling point?

During the pyrolysis of alkanes C-C bonds break in preference to C-H bond. Why?

Define cracking.

What is the function of iodic acid in the iodination of alkanes? Can we use any other substance in its place?

What is alternation effect?

Arrange the following compounds in order of their increasing boiling points:n-Pentane, n-Hexane, Ethane, 2-2-Dimethylpentane, 2-Methylpentane.

Why is light or heat necessary to initiate chlorination reaction of alkanes?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Which of the following compounds will show cis-trans isomerism?

(i)(CH₃)₂C = CH-C₂H₅
(ii) CH₂ = CBr₂(iii) C₂H₅CH = CH-CH₂
(iv) CH₃CH = CClCH₃

Arrange the following compounds in order of their increasing boiling points:
n-Pentane, n-Hexane, Ethane, 2-2-Dimethylpentane, 2-Methylpentane.