Question31:-Crude petroleum consists of carbon and hydrogen composition
4:84 - 87% carbon and 11 - 14% hydrogen
8.11 ~ 143% carbon and 84 - 87% hydrogen
C5496 carbon and 25% hydrogen
70 - 7296 carbon and 5 - 7% hydrogen
Correct Answer:- Option-é
Question32:-Polymerisation of petroleum products leads to
‘Ac Causes olefins to combine with each other
B:-Produce i-octane from cracked gases containing n-butane and i-butane
CCauses aromatics to combine with each other
D:-Produce lubricating oil
Correct Answer:- Option-é
Question33:-The measure of aromatic content in diesel is known as
‘A Octane number
B:-Pour point
C=Flash point
D-Aniline point
Correct Answer:- Option-D
Question34:-The average calorific value of Anthracite coal will be in the range
ക 8670 kcal/kg
B:-10250 ~ 14350 kcal/kg
(C5640 - 7250 वमव
5940 ~ 8250 kcalrkg
Correct Answer:- Option-é
Question35:-The ultimate analysis of a coal sample is as follows

Carbon : 72%; Hydrogen : 5%; Oxygen : 5.9%; Nitrogen : 1.5:
to produce C0. , #1,0 and 50, respectively.

4 31624 kg
8:2.32624 0
പിര
0:3.32624 10

Correct Answer: Option ®

; Ash : 8%, Calculate the total oxygen required for burning of carbon, hydrogen and sulphur

‘Question36:-Solar refrigeration can be accomplished using either source supplied from a solar collector or ‘supplied from photovoltaics.

AvThermal energy and electricity
नि energy and electricity

Radiation energy and electricity

D:-Vapour compression energy and electricity

Correct Answer: Option:

Question37::Which of the following compounds 15 added in LPG to impart a distinct colour 7

AcAmyl nitrate
B:-Ethyl mercaptan
೦7೬೭7೩ ethyl lead
D:Phenol
Correct Answer:- Option ®
Question38:-The purpose of refractory lined chamber in furnace is
‏مانم‎ enhance the heat energy by radiation
8:70 enhance the flame from fuel
लत enhance the gas and vapour flow rate
0.72 absorb the excess heat

Correct Answer: Option: