8. The volume of oxygen at STP required for the complete combustion of 2 litres of CO at STP is
A. 4 litres
B. 1/2 litre
C. 1 litre
D. 2 litres
8. The volume of oxygen at STP required for the complete combustion of 2 litres of CO at STP is
A. 4 litres
B. 1/2 litre
C. 1 litre
D. 2 litres