Question

Question 8 : Hydrogenation of benzene at higher temperature and under pressure yields -------
Cyclohexene
Cyclohexyne
Cyclohexane
Benzaldehyde

Question 9 : A functional group that introduces polarity leads to __________ in the molecule.
increase melting point
Permanent dipole moment
increase saturation point
increase boiling point

Question 10 : A chief source of benzene and its derivatives is __________.
Coaltar
Basalt
Bitumen
Limestone

Question 11 : All these affect boiling points except __________.
Shape of molecule
London forces
Molecular structure
Polarity

Question 12 : Among isomeric molecules, the linear isomer is ________.
Polar isomer
Unbranched isomer
non-polar isomer
Branched isomer

Answer 1

Cyclohexane
increase melting point, increase boiling point, Permanent dipole moment
Coaltar.
Shape of molecule.
Unbranched isomer.