Oxygen percentage (by weight) in atmospheric air is_________________?

Related Mcqs:

The gas which contributes maximum to the heating value of natural gas is __________________?

A. CO B. CO2 C. H2 D. CH4...

Nitrogen present in the flue gas is determined in the Orsat apparatus by absorbing it in_____________________?

A. KOH B. Ammoniacal cuprous chloride C. Pyrogallol solution D. None of these...

Which is the heaviest fuel gas out of the following ?

A. Blast furnace gas B. Coke oven gas C. Water gas D. Carburetted water gas...

The difference between total carbon and fixed carbon of coal will be minimum in case of___________________?

A. Lignite B. Bituminous coal C. Anthracite D. High temperature coke (V.M < 0.5%)...

The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always___________________?

A. 1 B. < 1 C. > 1 D. Unpredictable...