GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 030

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 030

291). Broad wooden sleepers are placed below the rails to
A). act as shock absorber
B). fix the fish plates properly
C). hold the rails parallel
D). reduce pressure exerted by the train

Answer: reduce pressure exerted by the train


   
292). An apparatus used for locating submerged objects is known as
A). radar
B). sonar
C). quasar
D). pulsar

Answer: sonar

   
293). All artificial satellite can be tracked very precisely from the earth by using
A). Doppler effect
B). radar
C). sonar
D). Zeeman effect

Answer: Doppler effect


   
294). A Geiger Muller counter is used for detecting
A). underground oil
B). coal
C). underground water
D). radioactivity

Answer: radioactivity

   
295). The sun is
A). a small star
B). a medium-sized star
C). a big star
D). not a star

Answer: a medium-sized star


296). Stars appear to move from east to west because the
A). Whole universe is moving from east to west
B). earth is revolving around the sun
C). earth is rotating from east to west
D). earth is rotating from west to east

Answer: earth is rotating from west to east


   
297). On a clear night we can see nearly ............... stars with naked eyes
A). 3000
B). 10000
C). 30000
D). 100000

Answer: 3000


   
298). The total number of stars in the universe is believed to be
A). 1010
B). 1011
C). 1015
D). 1021

Answer: 1021


   
299). The pole star is a part of the constellation
A). Ursa Minor
B). Ursa Major
C). Orion
D). Hydra

Answer: Ursa Minor

   
300). Planet Neptune has ............. known moons.
A). 2
B). 3
C). 4
D). 13

Answer: 13