Chem
Alkenes have which type of bond between them?
double
Differentiate between Alkene and Alkyne?
Alkenes have atleast one double bond between them, whereas alkynes have atleast one triple bond between them.
Is the synthesis of alkenes exothermic?
NOpe, The reactions that take place occur at high temperatures, and hence, they are endothermic.
Which among the following is not colourless?
a) Methene
b) Ethene
c) Propene
d) Butene
b
Explanation: Methene compound does not exist according to the formula CnH2n and also due to the lack of C=C.
How do you test for an alkene?
a.) They turn universal indicator purple
b.) They turn bromine water colourless
c.) They turn limewater cloudy
d.) All of the above
b.) They turn bromine water colourless.
Select the incorrect statement regarding alkenes.
a) In alkenes, the carbons are connected by pi bonds
b) Alkenes have almost same physical properties as that of the alkanes
c) Alkenes are less reactive than alkanes
d) Alkenes undergo polymerization reaction
c
Explanation: Alkenes are not less reactive than alkanes, indeed they are very reactive compared with them due to the presence of C=C.