When air which contains the gases Oxygen, nitrogen, carbo...
When air which contains the gases Oxygen, nitrogen, carbondioxide, water vapour and the rare gases, is passed through alkaline pyrogallol and then over quicklime, the only gases left are?
nitrogen and carbondioxide
the rare gases
nitrogen and oxygen
nitrogen and the rare gases
nitrogen, carbondioxide and the rare gases
Correct answer is D
- Alkaline solutions of pyrogallol absorb oxygen efficiently.
- Quicklime have a strong chemical affinity to absorb water.
- At room temperature, Calcium oxide (CaO) will spontaneously absorb carbon dioxide from the atmosphere.
The green colour solution of an Fe2 salt changes to a brown solution of an Fe3+ salt by ...
The molecule which has a linear shape is ...
Which of the following separation is routinely applied in the petroleum industry ...
Which of the following is likely to have the highest degree of hardness?...
At the same temperature and pressure, 50 cm<sup>3</sup> of nitrogen gas contains the sam...