Q147
One method of informing all workers of emergency situation of the mine is to pour . . . . . . . . oil in the intake of airstream. There by the smell spreads all parts of mine and workers come out.
A.
Kerosene oil
B.
Petrol
C.
Eucalyptus oil
AnswerD.
Benzine
Answer: Option C
Solution
Answer: Option C
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