99. Ignition quality of petrol is expressed by
A.Octane number
B.Cetane number
C.Calorific value
D.Self ignition temperature

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100. Petrol is distilled at a temperature in range of
A.30 - 65°C
B.65 - 220°C
C.220 - 350°C
D.350 - 450°C

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101. Kerosene is distilled at
A.30 - 65°C
B.65 - 220°C
C.220 - 350°C
D.350 - 450°C

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102. Self-ignition temperature of petrol is of the order of
A.150°C
B.More than 500°C
C.370°C
D.450°C

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103. Iso-octane
A.Has octane number of 0
B.Has octane number of 50
C.Has octane number of 100
D.Is an index of detonation quality

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104. Octane number is determined by comparing the performance of the petrol with the following hydrocarbons
A.Iso-octane
B.Mixture of normal heptane and iso-octane
C.Alpha methyl napthalene
D.Mixture of methane and ethane

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105. Cetane
A.Has zero cetane number
B.Has 100 cetane number
C.Helps detonation
D.Is a straight chain paraffin

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