Defining a useful channel involves both understanding the applications requirements and recognizing the limitations of the underlying technology. The gap between what applications expects and what the underlying technology can provide is called semantic gap.
Solvent used in duo-sol extraction for lube oil upgradation is a mixture of A. propane & phenol-cresol mixture. B. methyl ethyl ketone & glycol. C. phenol & furfural. D. propane & liquid sulphur dioxide.
The octane number of aviation gasoline may be A. 79 B. 87 C. 97 D. >100
For gasoline, the flash point (<50°C) is determined by the A. Abel apparatus. B. Pensky-Marten's apparatus. C. Saybolt chromometer. D. none of these.
Flash point of atmospheric distillation residue is determined by __________ apparates. A. Pensky-Martens (closed cup type). B. Abel. C. Cleveland (open cup type) D. none of these.
The colour of gasoline is an indication of its A. octane number. B. lead susceptibility. C. gum forming tendency & thoroughness of refining. D. none of these.
__________ converts n-paraffins to i-paraffins. A. Alkylation B. Polymerisation C. Isomerisation D. none of these
In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones. A. sulphur increases B. sulphur decreases C. nitrogen decreases D. none of these
Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst. A. bauxite B. fuller's earth C. activated clay D. all (a), (b) & (c)
True boiling point apparatus is used for the A. determination of characterisation factor. B. evaluation of oil stocks. C. determination of true vapour pressure. D. none of these.
Flash point of motor gasoline may be around __________ °C. A. 10 B. 45 C. 100 D. 150
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