Hydrocarbons Test

Result

Hydrocarbons Test - 13

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Weekly Quiz Competition

Question 1
1 / -0

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
1 / -0

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
1 / -0

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
1 / -0

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
1 / -0

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.