A mixture of ______ and ______ is known as water gas.
On a cold winter night, the persons sleeping in a room with closed door and windows with a coal fire burning inside may die due to the excessive accumulation of :
(a) nitrogen monoxide
(b) nitrogen dioxide
(c) carbon dioxide
(d) carbon monoxide
One of the following does not contribute in producing acid rain. This one is:
(a) nitrogen dioxide
(b) nitrogen monoxide
(c) carbon monoxide
(d) sulphur dioxide
Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent?
(a) carbon dioxide
Which of the following gas does not contribute to the formation of acid rain ?
(b) carbon monoxide
(c) sulphur dioxide
(d) nitrogen dioxide
Fill in the blanks :
(a) ___ product when carbon is burnt in a limited supply of air or oxygen.
(b) Carbon monoxide burns in air with a ___ flame to form carbon dioxide.
(c) Carbon monoxide is a product of ___ combustion
(d) A mixture of 95% oxygen and 5% carbon dioxide is called ___
(e) Carbon monoxide is used as a ___ in the extraction of pure metals from their corresponding ores.