Which gas is liberated on heating powdered charcoal ?

What was the gas liberated on heating powdered charcoal in a bell jar ?

Which gas is liberated in Dumas method?

Which gas is liberated in Kjeldahl's method?

Which gas is liberated in Kjeldahl's method?

If Cl_(2) gas is enclosed in presence of powdered charcoal in a closed vessel, the pressure of the gas decreases. It is because :

If Cl_(2) gas is enclosed in presence of powdered charcoal in a closed vessel, the pressure of the gas decreases. It is because :

Which gas is liberated when 2-Bromopropene is heated with alcoholic potash.

A greenish-yellow coloured gas is liberated on heating a mixture of "_______________"