Octane number can be improved by________________?
Octane number can be improved by________________?
A. Isomerization
B. Adding (C2H5)4 Pb
C. Adding (CH3)4 Pb
D. All
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The organic compounds having very high molecular weight are called _________________?
The organic compounds having very high molecular weight are called _________________?A. carboxylic acids
B. ketones
C. aldehydes
D. polymersMain source of organic compounds is__________________?
Main source of organic compounds is__________________?A. Animal
B. Fossil
C. Coal
D. PlantsCompound containing benzene ring in their structure are __________________?
Compound containing benzene ring in their structure are __________________?A. aliphatic
B. aromatic
C. carboxylic acid
D. carbohydratesIn cyano group the carbon atom shows which kind of hybridization___________________?
In cyano group the carbon atom shows which kind of hybridization___________________?A. sp2
B. sp
C. sp3
D. none of the aboveWhich one of the following compounds shows intense knocking ?
Which one of the following compounds shows intense knocking ?A. n-pentane
B. iso-heptane
C. iso-octane
D. n-heptaneHydro carbons which burn with smoky flame are called_________________?
Hydro carbons which burn with smoky flame are called_________________?A. Aliphatic
B. Alicyclic
C. Aromatic
D. Aldehyde