Octane of natural gas is a) 60-80 b) 80-100 c) >100 d) <60

Octane of natural gas is a) 60-80 b) 80-100 c) >100 d) <60
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Answer: c Explanation: The octane number of natural gas is always >
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Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

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Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

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The heating value per unit volume of hydrogen gas is less than ______________ that of air. a) 1/12th b) 1/10th c) 2/3rd d) 1/3rd

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