While using rescue apparatus, the leader shall carry a watch to record the pressure of compressed oxygen at an interval of 'A' minutes. A is given by
A. 15
B. 20
C. 25
D. 30
Answer: Option B
A. 15
B. 20
C. 25
D. 30
Answer: Option B
Combustable oils or materials not used for filling in . . . . . . . . Equipment
A. Hydraulic
B. Chemical
C. Biological
D. Eletrical
Out of the following belt conveyor related items which one is provided for safety for the persons?
A. Loop-take-up
B. Idler set
C. Audio-visual alarm
D. sequential control switch
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