Which of the following is not a greenhouse gas?
(a) Carbon dioxide
(b) Sulphur dioxide
(c) Methane
(d) Nitrogen
One of the following does not contribute to acid rain. That is : (a) nitrogen monoxide (b) sulphur dioxide (c) carbon monoxide (d) carbon dioxide
(a) What are metalloids? Name two metalloids.
(b) Classify the following elements into metals,non-metals, and metalloids:
Copper, Sulphur, Aluminium, Oxygen, Silicon, Nitrogen, Germanium, Mercury, Chlorine, and Sodium.
Which of the following is the main cause of global warming ?
(a) nitrogen dioxide
(b) sulphur dioxide
(c) carbon dioxide
(d) ozone