A.air
B.nitrogen
C.water
D.all of these answers
Related Mcqs:
- Yellow phosphorus is converted to red phosphorus in covered retorts at a temperature of
- In the manufacture of urea biuret (NH2CONHCONH2) formation is kept at minimum (<1%) because
- Which of the following properties of white phosphorus are common to red phosphorus?
- Red phosphorus may be changed to white phosphorus by
- The electric furnace is used for the manufacture of elemental phosphorus from a phosphate rock. The fused section of the furnace where the reduction to elemental phosphorus takes place is maintained at
- Under actual combustion conditions unless there is sufficient excess air the flue gas contains
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- The earth’s first atmosphere was composed primarily of ______________.
- Acid rain mainly result from __________?
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
