Explore topic-wise MCQs in Ic Engine.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.

1.

IN_SPARK_IGNITION_ENGINES,_THE_KNOCKING_TENDENCY_CAN_BE_DECREASED_BY?$

A. decreasing compression ratio
B. controlling intake throttle
C. controlling ignition timing
D. adding dopes like tetraethyl lead and ethylene dibromide
Answer» E.
Discussion
2.

Detonation_in_petrol_engines_can_be_suppressed_or_reduced_by_the_addition_of_small_quantity_of$

A. lead nitrate
B. iso-octane
C. n-heptane
D. none of the mentioned
Answer» B. iso-octane
Discussion
3.

For S.I. engines fuel most preferred are

A. aromatics
B. paraffins
C. olefins
D. napthenes
Answer» B. paraffins
Discussion
4.

The molecular structure of the straight-run gasoline is changed by

A. reforming
B. refining
C. cracking
D. boiling
Answer» B. refining
Discussion
5.

Hydrocarbons are decomposed into smaller hydrocarbons by

A. reforming
B. refining
C. cracking
D. polymerization
Answer» D. polymerization
Discussion
6.

Paraffins have molecular structure of

A. chain saturated
B. chain unsaturated
C. ring saturated
D. ring unsaturated
Answer» B. chain unsaturated
Discussion
7.

Paraffins are generally represented by

A. C<sub>n</sub>H<sub>n</sub>
B. C<sub>n</sub>H<sub>2n</sub>
C. C<sub>n</sub>H<sub>2n+2</sub>
D. C<sub>n</sub>H<sub>2n-6</sub>
Answer» D. C<sub>n</sub>H<sub>2n-6</sub>
Discussion
8.

Advantage of gaseous fuel is that

A. it can be stored easily
B. it can mix easily with air
C. it can displace more air from the engine
D. all of the mentioned
Answer» C. it can displace more air from the engine
Discussion