Everyday Science (General Knowledge) FPSC Past MCQs Papers

(5) An eclipse of the Sun occurs when:
(a) The Moon is between the Sun and the Earth(b) The Sun is between the Earth and the Moon
(c) The Earth is between the Sun and the Moon(d) The Earth casts its shadow on the Moon
(e) None of these.
(6) The ozone layer protects the Earth from rays sent down by the Sun:
(a)Ultraviolet rays  (b) Infrared rays (c) Gamma rays
(d) Radioactive rays  (e) None of these.
(7) The ozone layer is present about 30 miles (50 Km) in atmosphere above the Earth. The stratum (layer)
of atmosphere in which ozone layer lies is called as:
(a)Exosphere  (b)  Mesosphere (c) Stratosphere
(d) Ionosphere  (e) Troposphere
(8) Which rocks are formed by the alteration of pre-existing rocks by great heat or pressure?
(a) Igneous rocks (b)  Sedimentary rocks (c) Metamorphic rocks
(d) Acid rocks (e) Basic rocks.
(9) The most abundant natural Iron Oxides are:
(a)Magnetite and Pyrite  (b)  Magnetite and Bauxite (c) Hematite and Pyrite
(d) Hematite and Magnetite  (e) Hematite and Bauxite
(10) The two most abundant elements in sea water are:
(a)Sodium and Potassium  (b)  Sodium and Calcium (c) Sodium and Chlorine
(d) Chlorine and Iodine  (e) Magnesium and Sulphur
(11) An electric current can produce:
(a)Chemical effect  (b)  Magnetic effect (c)  Heating effect
(d) All of these three (e) None of these.
(12) The unit of home electricity energy consumption is:
(a)Watt hour (b)  Kilowatt hour  (c) Joule hour
(d) Kilojoule hour  (e) None of these.