Test: Introduction To Alkenes

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This mock test of Test: Introduction To Alkenes for JEE helps you for every JEE entrance exam. This contains 5 Multiple Choice Questions for JEE Test: Introduction To Alkenes (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Introduction To Alkenes quiz give you a good mix of easy questions and tough questions. JEE students definitely take this Test: Introduction To Alkenes exercise for a better result in the exam. You can find other Test: Introduction To Alkenes extra questions, long questions & short questions for JEE on EduRev as well by searching above.

QUESTION: 1

Identify the addition reaction which is not undergone by the alkenes

A.
Mercuration
B.
Oxymercuration
C.
Hydroboration
D.
Halogenation

Solution:

Alkenes do not undergo mercuration, indeed they undergo oxymercuration , a process in which an alkene is converted into an alcohol.

QUESTION: 2

Geometrical isomerism is a type of:

A.
Structural isomerism
B.
Stereoisomerism
C.
Both (1) and (2)
D.
None of the above

Solution:

Geometric isomerism (also known as cis-trans isomerism or E-Z isomerism) is a form of stereoisomerism. This page explains what stereoisomers are and how you recognise the possibility of geometric isomers in a molecule.

QUESTION: 3

Wide range of different hydrocarbons are separated into fractions

A.
fractional decomposition
B.
fractional distillation
C.
fractional substitution
D.
fractional polarization

Solution:

The hydrocarbons which condense over a temperature range (for example, between 50^∘C and 100^∘C), are called a fraction because they are parts of a whole. Each of the fractions has special uses.Separating the mixture of substances in crude oil into fractions by evaporation and condensation is fractional distillation.

QUESTION: 4

Out of the following compounds , which will be have a zero dipole moment.

A.
1,1 - dichloroethylene
B.
cis-1,2-dichlorethylene
C.
trans-1,2-dichlorethylene
D.
none of these.

Solution:

In case of trans-1,2-dichloroethylene

The net dipole moment is zero but in case of cis -1,2 -dicholorethylene.
There is some resultant dipole moment.

QUESTION: 5

Due to presence of double bonds, alkenes are

A.
unsaturated
B.
saturated
C.
polar
D.
non-polar

Solution:

Hydrocarbons are compounds made from carbon and hydrogen atoms joined by covalent bonds. Alkanes are saturated - they have only single bonds. Alkenes have a double bond - they are unsaturated. These polymer molecules are saturated.