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Longest Chain Rule

The isomer in...

Question

The isomer in which similar atoms or groups are present on the same side of the double bond is known as:

A

Trans isomer

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B

Chain isomer

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C

Cis isomer

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D

Position isomer

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Solution

The correct option is C
Cis isomer

The isomer in which similar atoms are present on the same side of the double bond is known as cis isomer.

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Q. Which one of the following reason is responsible for lower melting point of cis isomer than trans-isomer?

Q. Why boiling point of cis isomer is greater than trans isomer?

The cis-isomer of which of the following ions will have optical isomers but the trans-isomer will not?

Q. Consider the following reaction and statements:

[C o (N H_{3})_{4} B r_{2}]^{+} \to [C o (N H_{3})_{3} B r_{3}] + N H_{3}

(I) Two isomers are produced if the reactant complex ion is a cis-isomer
(II) Two isomers are produced if the reactant complex ion is a trans-isomer
(III) Only one isomer is produced if the reactant complex ion is a trans-isomer
(IV) Only one isomer is produced if the reactant complex ion is a cis-isomer
The correct statements are:

Q. Geometrical isomerism is a kind of stereoisomerism which is present in the compounds containing a double bond

(C = C, C = N . N = N)

and arise due to the restricted or frozen rotation about the double bond. The atoms or groups attached to the doubly bonded carbons must be different. In aldoximes, the isomer is named as syn if hydrogen and hydroxyl groups are on the same side of

C = N

bond and if these are on opposite sides, the isomer is named as anti. In ketoximes, the prefixes syn and anti indicate which group of ketoxime is syn or anti to hydroxyl group.
On treating with

N H_{2} O H

, which can form two products?

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