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Internal Combustion Engines

Internal Combustion Engines
The ignition quality of diesel oil is expressed by

Octane number
Calorific value
None of the listed here
Cetane number

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Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

All of these
It is a standard fuel used for knock rating of diesel engines
It has long carbon chain structure
Its chemical name is normal hexadecane

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Internal Combustion Engines
The normal heptane (C₇H₁₆) is given a rating of ________ octane number.

100
120
50

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Internal Combustion Engines
Antiknock for compression ignition engines is

Amyl nitrate
Tetra ethyl lead
Napthene
Hexadecane

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Internal Combustion Engines
When crude oil is heated, then which of the following hydrocarbon is given off first?

Natural gas
Kerosene
Gasoline
Paraffin

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Internal Combustion Engines
The inlet valve of a four stroke cycle internal combustion engine remains open for

130°
180°
230°
270°

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