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Internal Combustion Engines

Internal Combustion Engines
The combustion in compression ignition engines is

Heterogeneous
Both (A) and (B)
None of these
Homogeneous

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Internal Combustion Engines
The reference fuels for knock rating of spark ignition engines would include

Normal heptane and iso-octane
Normal octane and aniline
Iso-octane and alpha-methyl naphthalene
Iso-octane and normal hexane

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Internal Combustion Engines
Alpha-methyl-naphthalene (C11H10) has a cetane number of

120
100
50
0

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Internal Combustion Engines
The air standard efficiency of an I.C. engine depends on

Speed of engine
Fuel used
Compression ratio
None of these

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Internal Combustion Engines
In a petrol engine, if diesel is used, then the engine will

Run at high speed
Explode
Not run
Run more efficiently

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Internal Combustion Engines
The inlet value of a four stroke cycle I.C engine remains open for nearly

125°
180°
235°
200°

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