Reddish orange colour of the solution of bromine in carbon tetrachloride decolourises. This is a test for:

Unsaturation

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Saturation

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Alcohol

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Carbonyl compounds

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Solution

The correct option is A
Unsaturation

The decolourisation of bromine colour confirms the presence of double or /and triple bond in the molecule of the hydrocarbon.

This decolourisation takes place due to the addition of bromine across the double or triple bond.

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Similar questions

Q. Assertion :Bromine in Carbon Tetrachloride test is to distinguish between: Ethene gas & ethane gas. Reason: When this reaction occurs, molecular bromine is consumed, and its characteristic dark redbrown color disappears if bromine is not added in excess. The rapid disappearance of the bromine color is a positive test for unsaturation.

Q. A compound is soluble in concentrated

H_{2} S O_{4}

. It does not decolourize bromine in carbon tetrachloride but oxidized by chromic anhydride in a sulphuric acid within two seconds, turning orange solution to blue green then opaque. The original compound is-

Q. How is bromine solution useful in testing of unsaturated compounds ? Explain the science behind it.

(a) Write an equation for the laboratory preparation of
(i) an unsaturated hydrocarbon from calcium carbide. (ii) an alcohol from ethyl bromide.
(b) What would you see, when ethyne is bubbled through a solution of bromine in carbon tetrachloride ?
(c) Name the addition product formed between ethene and water.

One of the following organic compounds cannot decolourise the red-brown colour of bromine water. This compound is :

(a) $C_{14} H_{28}$ (b) $C_{7} H_{12}$ (c) $C_{6} H_{14}$ (d) $C_{9} H_{16}$

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Reddish orange colour of the solution of bromine in carbon tetrachloride decolourises. This is a test for:

The correct option is A Unsaturation The decolourisation of bromine colour confirms the presence of double or /and triple bond in the molecule of the hydrocarbon. This decolourisation takes place due to the addition of bromine across the double or triple bond.

The correct option is A
Unsaturation

The decolourisation of bromine colour confirms the presence of double or /and triple bond in the molecule of the hydrocarbon.

This decolourisation takes place due to the addition of bromine across the double or triple bond.