Internal Combustion Engines
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

Increasing the compression ratio
Adherence to proper fuel specification
Avoidance of overloading
Using additives in the fuel

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Internal Combustion Engines
Volatility of diesel fuel oil is

Indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
It catches fire without external aid
Temperature at which it solidifies or congeals

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