1077Chemical EngineeringMedium
Which of the following acts as a natural source of air pollution?
ADeforestation
BForest fire
CVolcanic eruption
DNone of these
Correct answer
C. Volcanic eruption
Explanation
The correct answer is Volcanic eruption.
Correct answer
C. Volcanic eruption
Explanation
The correct answer is Volcanic eruption.
Hardest material so far found is________?
Hard water________?
Polyvinyl chloride containers are not suitable for storing________?
Which of the following has the highest flash point of all?
Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is ________ percent?
________ is the major constituent of the Portland cement?