Which of the following is/are the cause of skin cancer?
a) SO2, CO
b) NO and NO2
c) CFCs
d) none of these
Global warming refers to the rise in
average…………on earth.
a) rainfall
b) temperature
c) air speed
d) all of these
Global warming is mainly caused by;
NTS PST (2016/2017)
a) carbon dioxide
b) carbon monoxide
c) nitrogen dioxide
d) nitrogen monoxide
e) sulphur trioxide
Global warming is mainly caused by:
NTS PET 24/08/2019 (1:30)
a) oxides of sulfur
b) oxides of nitrogen
c) carbon dioxide and methane
d) carbon monoxide
The Ozone layer protects us from harmful………….rays of the sun.
a) ultraviolet
b) Cosmic rays
c) Infrared rays
d) radioactive rays
Sulphuric acid (H2SO4) is formed from………
a) N2
b) CO2
c) SO2
d) CO
