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Introduction to Geometric Isomerism

Which one of ...

Question

Which one of the following shows geometrical isomerism : $C H C l = C H C l, C H_{2} = C C l_{2}, a n d C C l_{2} = C H C l .$

A

C H C l = C H C l

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B

C H_{2} = C C l_{2}

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C

C C l_{2} = C H C l

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D

None of the above

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Solution

The correct option is A $C H C l = C H C l$
Condition to show geometrical isomerism : $X Y C = C X Y$
X and Y must have different groups/atoms attached to carbon on the same side of double bond.
Among given compounds, only $C H C l = C H C l$ shows geometrical isomerism.
Other two have identical atoms on the same side of double bond; therefore, they can not show cis-trans isomerism.

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Similar questions

Q. Which one of the following shows geometrical isomerism :

C H C l = C H C l, C H_{2} = C C l_{2}, a n d C C l_{2} = C H C l .

Q. Which of the following statements is/are correct about

C H_{2} = C {C l}_{2}

?

C H_{3} - C H (C l) - C H_{2} - C H_{2} - C H_{3}

C H_{3} - C H_{2} - C (C l) (C H_{3}) - C H_{3}

are both positional and chain isomerism of each other.

C H \equiv C H X - \to C H_{2} = C H C l Y \to - (- C H_{2} - C H C l - Cl | C H -)_{n} -

Fill up the blanks with suitable reagents to show synthesis of polyvinyl chloride.

Q. Write the IUPAC name of

C H_{3} - C H (C l) - C H_{2} - C H = C H_{2}

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Introduction to Geometric Isomerism

Standard XII Chemistry

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