Multiple Choice QuestionsAmmoniacal silver nitrate form a white precipitate easily with
CH3C≡CH
CH3C≡C-CH3
CH3CH=CH2
CH2=CH2
Which of the following compounds would have the highest boiling point ?
CH3CH2CH2CH3
CH3NH2
CH3OH
CH2F2
The quality of diesel is expressed by
octane number
cetane number
antiknock compound
presence of additives
B.
cetane number
(a) Octane numberis used to express the quality of petrol and gasoline.
(b) Cetane numberis used to express the quality of diesel. It is defined as the percentage of cetane (by volume) in a mixture of cetane (n-hexadecane) and α-methylnaphthalene which has the same ignition properties as the fuel under consideration.
(c) Antiknock compounds such as TEL (tetraethyl lead) is used to improve the quality of gasoline.
(d) Additives are also used to improve the quality of gasoline.
An alkene having molecular formula, C6H10 gives OHC(CH2)4CHO, on ozonolysis. The alkene is
hexene-1
hexene-2
cyclohexene
1-methylcyclohexene-1
When petroleum is heated gradually, the first batch of vapours evolved will be rich in
kerosene oil
diesel oil
lubricating oil
petroleum ether
The correct name for the following hydrocarbon is
tricycle [4.1.0] heptane
bicyclo [5.2.1] heptane
bicyclo [4.1.0] heptane
bicyclo [4.1.0] hexane
The number of isomeric alkanes having the molecular formula C5H12 is
Three
Five
nine
Thirty two
The petrol, octane number of which is 80, has
20% n-heptane + 80% iso-octane
20% n-heptane + 80% n-octane
80% n-heptane + 20% iso-octane
80% n-heptane+ 20% n-octane
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