GENERAL KNOWLEDGE | QUIZ | PHYSICS | 2 | QUESTIONS BASED ON PHYSICS | WHICH OF THE FOLLOWING IS USED AS A MODERATOR IN NUCLEAR REACTOR? | WHICH ONE OF THE FOLLOWING IS A GOOD CONDUCTOR OF ELECTRICITY? | IN AN ATOMIC NUCLEUS, NEUTRONS AND PROTONS ARE HELD TOGETHER BY

DIRECTIONS : Questions based on Physics.

6.     Which of the following is used as a moderator in nuclear reactor?
      A.  Ordinary water
      B.  Radium
      C.  Thorium
      D.  Graphite
 Ans: D.

7.     In an atomic nucleus, neutrons and protons are held together by
      A.  Gravitational forces
      B.  Magnetic forces
      C.  Exchange forces
      D.  Coulombic forces
  Ans: C.

8.     Television signal cannot be received generally beyond a particular distance due to
      A.  Curvature of the earth
      B.  Weakness of antenna
      C.  Weakness of signal
      D.  absorption of signal in air
  Ans: A.

9.     Which one of the following is the unit of activity of a radioactive source?
      A.  Lux
      B.  Becquerel
      C.  Tesla
      D.  Siemens
  Ans: B.

10.     Which one of the following is a good conductor of electricity?
      A.  Shellac
      B.  Ebonite
      C.  Glass
      D.  Human body
 Ans: D.