C-Naphthenes
D-Paraffins
Correct Answer:- Option-D

Question31:-In petroleum refining operations, the process used for converting paraffins and naphthenes to aromatics is
AcAlkylation
B:-Hydrocracking
Catalytic reforming
D:-Hydrotreating
Correct Answer:- Option-C

Question32:-The octane number decreases in the order
‘A: Naphthenes > Aromatics > Isoparaffins > Olefins > n-paraffins
B:-Olefins > Isoparaffins > Aromatics > Naphthenes > n-paraffins
C-lsoparaffins > Olefins > Naphthenes > Aromatics > r-paraffins
D:-Aromatics > Isoparaffins > Naphthenes > Olefins > n-paraffins,
Correct Answer:- Option-D

Question33:-Hydrotreating is used for
‘AcImproving octane number of gasoline
B:-Removing sulphur and nitrogen from petroleum fractions
‘C-Removing water from crude oil
D-Improving cetane number of diese!
Correct Answer:- Option ®

Question34::Which nuclear fuel is found abundantly in nature ?
‘Ac Uranium
B:Thorium
C=Plutonium
D:Radium
Correct Answer:- Option-é

‘Question35::Which of the two nuclear fuels are produced artificially 7

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BP and U

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ഉച
Correct Answer: Option-D
‘Question36::What is ocean thermal energy conversion ?
‘A: Hamessing the temperature differences between surface waters and deep ocean waters
B-Hamessing the temperature differences between the coastal waters and deep ocean waters
(CHamessing the heat energy from the underwater volcanoes
D:-Hamessing the heat energy from the tides in ocean
Correct Answer: Option:
‘Question37::Which is the correct sequence in formation of coal 7
AcWood-lignite+peat-rbituminous coal
B:-Lignite»peat-ranthracite-rbituminous coal
C:-Wood-+peat-lignite-sbituminous coal
D:-Lignite+ranthracite-speatbituminous coal
Correct Answer: Option-C
Question38:AcLignite, peat, anthracite coal, bituminous coal
B:-Peat, lignite, anthracite coal, bituminous coal

C:-Weod, lignite, bituminous coal, anthracite coal