4221Chemical EngineeringMedium
Maximum allowable concentration of CO2 in air for safe working is ________ ppm (parts per million)?
A1000
B2000
C5000
D50
Correct answer
C. 5000
Explanation
The correct answer is 5000.
Correct answer
C. 5000
Explanation
The correct answer is 5000.
Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses ________ as catalyst?
Liquid ammonia is shipped in ________ containers?
Dechlorination of treated water is necessary to ________?
Entrainer used in Azeotropic distillation should________?
Common house hold glass (i.e., soda-lime glass) is a/an ________ material?
Smoke point of a test sample of kerosene is found to be 15 mm. On removal of ________ from it, the smoke point rises to 25 mm?