Identify the statement which does not describe the property of alkenes.

They are unsaturated hydrocarbons

No worries! We‘ve got your back. Try BYJU‘S free classes today!

They decolourises bromine water

No worries! We‘ve got your back. Try BYJU‘S free classes today!

They can undergo addition as well as substitution reactions

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

They undergo combination with oxygen forming carbon dioxide and water

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C They can undergo addition as well as substitution reactions
Alkenes are the compounds having double bonds. As they have unsaturation they show addition reaction. But, they do not show substitution reactions.

Some reactions appear to be “substitution” of an alkene, but in fact, is the result of an “addition-elimination” sequence of reactions.

Hence, the correct option is $C$

Suggest Corrections

Similar questions

Q. Assertion :Unsaturated hydrocarbons decolorize the red coloured bromine water. Reason: Unsaturated hydrocarbon undergoes substitution reaction with bromine water.

Alkenes as well as alkynes decolourise bromine water.

Q. Choose the correct answer:
(i) Which of the following statements is wrong about alkanes?
(a) They are all saturated hydrocarbon.
(b) They can undergo addition as well as substitution reaction.
(c) They are almost non-polar in nature.
(d) On complete combustion give out carbon dioxide and water.

(ii) Select the acid which contains four hydrogen atoms in it.
(a) Formic acid
(b) Sulphuric acid
(c) Nitric acid
(d) Acetic acid

Q. Although benzene is highly unsaturated it does not undergo addition reactions. The explanation of this can be suggested as:

Fill in the blanks with the correct words from the brackets :

Alkenes are the (a) ...... (analogous/homologous) series of (b) ... (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (c) .... (double/single) bonds. Alkenes mainly undergo (d) (addition/ substitution) reactions.

Join BYJU'S Learning Program