(37) Monsoon is caused by:
a. Seasonal reversal of winds
b. Revolution of earth
c. Movement of clouds
d. Rise in temperature
e. Rain forests
(38) Which of the following atmospheric layers help in radio communication?
a. Exosphere
b. Ionosphere
c. Troposphere
d. Stratosphere
e. Ozone layer
(39) A moderator is used in nuclear reactor in order to:
a. Accelerate the neutrons
b. Slow down the speed of the neutrons
c. Increase the number of elections
d. Decrease the number of electrons
e. None of these
(40) Sedimentary rocks are:
a. Porous
b. Hard
c. Rough
d. Brittle
e. Volcanic
New Everyday Science MCQs Paper for PPSC NTS FPSC