FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO PIN BS-17
UNDER THE FEDERAL GOVERNMENT
General Science & Ability
1) Which of the following does not vary predictably with the depth of the aquatic environment?
(a) Salinity
(b) Temperature
(c) Penetration by sunlight
(d) None of these
Answer: (a)
2) The ozone layer protects the earth from rays sent by the sun:
(a) Ultraviolet rays
(b) Infrared rays
(c) Gamma rays
(d) Radioactive rays
(e) None of these
Answer: (a)
3) The ozone layer is present in atmosphere above earth. The stratum (layer) of atmosphere in which ozone layer lies is called as:
(a) Exosphere
(b) Mesosphere
(c) Stratosphere
(d) Ionosphere
(e) Troposphere
Answer: (c)
4) One of the main functions of the earth’s ozone layer is to
(a) Prevent global warming
(b) Filter out ultraviolet rays
(c) Absorb pollution
(d) All of the above
Answer: (b)