Changing of one element into another element is known as

A. transmutation

B. fission

C. fusion

D. radioactivity

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  1. When a bottle of perfume la opened in one corner of a room the smell spreads soon throughout the room.…
  2. Solids have definite shapes. This is because
  3. When a whistling engine approaches a person standing on the platform, the frequency or the note
  4. Fish and other aquatic creatures can live inside a deep frozen pond because
  5. The principle on which a Jet engine works is
  6. The unit of power in SI is
  7. The body of an electrical appliance is earthed in order that
  8. A workman was working on a rail track. A young boy at a distance holds his ear close to the railway…
  9. A proton is
  10. The Cact that the compass needle does not point true north was observed first by
  11. The stem of a vibrating tuning fork is pressed against a sound box. Then
  12. Mercury is used in a barometer because
  13. Sound waves
  14. The evaporation rate depends on
  15. The inability of a body to change its state of rest or uniform motion along a straight line is called…
  16. The property of a fluid by which it resists relative motion within itself is known as
  17. In a vacuum the following three articles are dropped at the same time and from the lame height. Which…
  18. Out of the following which is an insulator?
  19. Diamond shines because of its
  20. The distance between two bodies is halved. Now the force of attraction between them will be
  21. Which of the following revolves round the nucleus in an atom?
  22. The device for tracking and locating the position of a moving object in space is called
  23. The function of a moderator in a nuclear reactor is
  24. Under similar conditions of temperature and pressure, the velocity of sound is maximum in
  25. The scientist who first sent electromagnetic waves to distant places was
  26. The characteristics of a musical note are
  27. The atmosphere gets heated up mainly by
  28. When a bullet is fired from a gun
  29. The planet that has got a well-developed set of rings is
  30. The world's first artificial satellite Sputnik I was launched by Russia in