Mining Engineering > GATE 2020 > Mine Safety
In the context of gas testing using flame safety lamp, the correct statement is
A
Each accumulation test has to be necessarily followed by percentage test.
B
Accumulation test is always done after percentage test.
C
Either percentage test or accumulation test can be done first.
D
Percentage test is done only in the event of accumulation test giving negative result.

Correct : d

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