Engineering Thermodynamics
Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits?

SO₂, NH₃, CO₂, moisture
O₂, N₂, steam, CO₂
O₂, N₂, water vapour
O₂, N₂, H₂, air

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
Coke is produced

By heating wood with a limited supply of air to a temperature not less than 280°C
When coal is first dried and then crushed to a fine powder by pulverizing machine
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
From the finely ground coal by moulding under pressure with or without a binding material

ANSWER DOWNLOAD EXAMIANS APP