Question 51 : Which of the following has the lowest viscosity (at a given temperature) of all?
1. Naphtha
2. Kerosene
3. Diesel
4. Lube oil
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Question 52 : __________ determination is not a very significant and important test for gasoline.
1. Octane number
2. Gum & sulphur content
3. Reid vapor pressure
4. Viscosity
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Question 53 : __________ test is done to find out the softening point of bitumen.
1. Impact
2. Viscosity
3. Ball and ring
4. Flame
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Question 54 : Cetane number of diesel used in trucks may be about
1. 85
2. 35
3. 14
4. 5
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Question 55 : Catalyst used in catalytic reforming is
1. nickel
2. platinum on alumina
3. aluminium chloride
4. iron
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Question 56 : Pick out the additive property of a lube oil out of following.
1. Specific gravity
2. °API gravity
3. Viscosity
4. Flashpoint
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Question 57 : Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint.
1. white
2. red
3. yellow
4. black
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Question 58 : Stabilisation of gasoline (petrol) means
1. increasing its oxidation stability.
2. improving its lead susceptibility.
3. increasing its vapour pressure.
4. removal of dissolved gases from it.
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Question 59 : In petroleum refining, the process used for conversion of hydrocarbons to aromatics is
1. catalytic reforming
2. alkylation
3. catalytic cracking
4. hydrotreating
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Question 60 : The main use of heavy gas oil produced by the vacuum distillation unit is as a
1. blending component for petrol.
2. feedstock for fluid catalytic cracking unit.
3. none of these.
4. blending component for kerosene.
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