Related Questions

Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency?
A Paraffins
B Naphthenes
C Aromatics
D Iso-paraffins
Which of the following is the general formula for saturated hydrocarbons?
A CnH2n + 2
B CnH2n - 2
C CnH2n + 1
D CnH2n - 1
'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
A Temperature vs. log (vapor pressure)
B Vapor pressure vs. log (temperature)
C Log (temperature) vs. log (vapor pressure)
D Vapor pressure vs. temperature
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)
A Log P vs . T
B Log P vs. log T
C T vs . P
D P vs . log T
Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere when
D ozone is formed in the atmosphere ,and when
Choose the correct option to replace the quotation part of each sentence. Often visible as smog, 'ozone is formed in the atmosphere from' hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere, and when
D ozone, formed in the atmosphere when
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
A Alumina
B Platinum
C Vanadium pentoxide
D Iron oxide
Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because
A The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot
B It reduces its calorific value tremendously
C It reduces its flame temperature tremendously
D There are chances of explosion during preheating
Overall heat transfer co-efficient for cooling of hydrocarbons by water is about
A 50 - 100 kcal/hr.m2.°C
B 50 - 100 W/m2.°K
C 50 - 100 BTU/hr.ft2.°F
D 1000 - 1500 BTU/hr.ft2.°F
In petroleum refining, the process used for conversion of hydrocarbons to aromatics is
A Catalytic cracking
B Catalytic reforming
C Hydrotreating
D Alkylation

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