070/21
94. Which is not true about calcium carbide ?
A) It is brittle
B) It absorbs moisture from atmosphere
C) It produces acetylene when brought in contact with water
D) It is soluble in kerosene oil
95. Ina gas cut plate, the cut shows grooves and has deep drag lines. This is due to
A) Tip too close to the cut surface
B) Too much travel speed
C) Less oxygen pressure
D) Smaller size cutting nozzle
96. What percentage of chromium and ni....
See more