The Application Layer enables the user, whether human or software, to access the network. It provides user interfaces and support for services such as e-mail, shared database management and other types of distributed information services.
☛ Network virtual Terminal
☛ File transfer, access and Management (FTAM)
☛ Mail services
☛ Directory Services
Diesel used in naval applications has a minimum cetane number of A. 25 B. 35 C. 45 D. 65
Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene. A. Smoking tendency of hydrocarbons increases in the order paraffins → isoparaffins → naphthenes → aromatics. B. Smoking tendency of paraffin's increases with decrease in its molecular weight. C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond. D. Smoking tendency of aromatics decreases with increase in its molecular weight.
Which is the most undesirable component in kerosene? A. Aromatics B. i-paraffins C. n-paraffins D. Naphthenes
Hydrogen percentage (by weight) in crude petroleum may be about A. 5 B. 15 C. 25 D. 35
Which of the following constituents present in petroleum is responsible for ash formation? A. Nitrogen compounds B. Organometallic compounds C. Sulphur compounds D. Oxygen compounds
The coking process normally mostly used in Indian oil refineries is the __________ coking process. A. delayed B. flexi C. fluid D. contact
Stabilisation of gasoline (petrol) means A. removal of dissolved gases from it. B. increasing its oxidation stability. C. improving its lead susceptibility. D. increasing its vapour pressure.
In petroleum refining, the process used for conversion of hydrocarbons to aromatics is A. catalytic cracking B. catalytic reforming C. hydrotreating D. alkylation
The main use of heavy gas oil produced by the vacuum distillation unit is as a A. blending component for kerosene. B. blending component for petrol. C. feedstock for fluid catalytic cracking unit. D. none of these.
Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol. A. waxes B. mercaptans C. asphalt D. diolefins
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