Engineering :: Petroleum Refining Engineering
121.
The conductivity of a crude oil-water mixture depends on the
A.
temperature
B.
percentage of water
C.
pH
D.
all of the above
Answer: Option D
Explanation:
122.
The conductivity of a crude oil-water mixture
A.
remains unaffected with change in temperature
B.
increases with increase in temperature
C.
decreases with increase in temperature
D.
may decrease or increase with increase in temperature depending on the nature of crude oil
Answer: Option B
Explanation:
123.
The conductivity of a mixture of crude oil-water mixture
A.
is independent of the amount of water present
B.
decreases with increase in the amount of water
C.
increases with increase in the amount of water
D.
decreases linearly with increase in the amount of water
Answer: Option C
Explanation:
124.
The feedstock for the catalytic reforming unit is
A.
naphtha
B.
high speed diesel oil
C.
kerosine
D.
reduced crude oil
Answer: Option A
Explanation:
125.
The operation of reactors used in the catalytic reforming of naphtha is favoured at
A.
low pressure and low temperature
B.
high pressure and high temperature
C.
low pressure and high temperature
D.
high pressure and low temperature
Answer: Option C
Explanation:
126.
The monometallic catalyst used in the catalytic reforming of naphthas is
Answer: Option A
Explanation:
127.
The bi-metallic catalysts used in the catalytic reforming of naphthas permit aromatics crerating reactions to occur with a minimum of hydrocracking of paraffins and naphthenes. The bi-metallic catalysts contain
A.
platinum and nickel
B.
nickel and vanadium
C.
platinum and rhenium
D.
rhenium and rhodium
Answer: Option C
Explanation:
128.
In the catalytic reforming of naphtha the dehydrogenation of naphthenes gives hydrogen and
A.
paraffins
B.
aromatics
C.
branched chain paraffins
D.
none of the above
Answer: Option B
Explanation:
129.
The desirable reactions in the catalytic reforming of naphtha are
A.
slightly exothermic
B.
endothermic
C.
autocatalytic
D.
highly exothermic
Answer: Option B
Explanation:
130.
Which of the following reactions is undesirable in the catalytic reforming of naphthas?
A.
Hydrocracking of paraffins
B.
Dehydrogenation of naphthenes
C.
Isomerization of naphthenes
D.
Cyclization of paraffins
Answer: Option A
Explanation:
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