Which of the following gas is used as a fire extinguisher?
Oxygen
Carbon dioxide
Argon
Helium
Carbon dioxide does not support combustion and is cold when kept inside the fire extinguisher at low pressure.
Which of the following exists as molecules?
(i) Oxygen gas
(ii) Argon
(iii) Ammonia
(iv) Helium
(v) Water
(vi) Sugar
Which of the following are Molecules?
(iii)Ammonia