Can we increase the temperature of gas without supplying heat to it?
You can increase temperature with pressure. Compress a gas enough (or anything for that matter) and temperature will increase.http://wiki.answers.com/Q/How_could_you_increase_the_temperature_of_a_gashttp://www.physicsforums.com/archive/index.php/t-39446.html
No I believe that u can't unless u excelerate the particles of said gas
PV=nRT (might be alien looking stuff, but here P is pressure of gas, V its volume, n its amount, R a constant and T temperature) This is equation of gases. Clear enough, T=PV/nR, so on increasing the pressure of a gas you can heat it.Try studying Thermodynamics. Its full of this stuff.
Spread gas out and it cools, compress it and it heats up.thats how stars are born, compressed hydrogen.