The planet that has got a well-developed set of rings is

A. Venus

B. Saturn

C. Mercury

D. Earth

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  1. Commonly used safety fuse wire is made of
  2. Sound waves
  3. The principle of equivalence of mass and energy was established by
  4. A nuclear reactor is said to have become 'critical' when
  5. The ballistic missile, Agni 11, tested by India has a maximum range of
  6. The escape velocity of a satellite projected from the surface of the earth is independent of
  7. If a man wants to hear clearly the echo of a sound produced by him from a hill, the hill should be away…
  8. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching…
  9. We always see only one side of the moon because
  10. Who discovered that the Cree Call acceleration Is the same for any object at a given place?
  11. X-rays are
  12. Increase in pressure
  13. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
  14. A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left…
  15. The Indian Space Research Organisation (ISRO) is located at
  16. A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity…
  17. The speed at which light travels in vacuum is
  18. Holography is the technique of
  19. The weight of a body is
  20. The device that is used to measure the electromotive force of a cell is
  21. Rays similar to X-rays but of smaller wave length that are given off by radioactive substances are
  22. An ammeter has
  23. Galaxies emit
  24. A permanent magnet may be demagnetised by
  25. A solar eclipse occurs when the earth, the sun and the moon are in a straight line, and
  26. When a ship floats on water, the weight or water displaced is
  27. The spectrum of white light can be studied by
  28. Water has maximum density at
  29. The maximum range of most TV signals is from 121 to 240 km only because
  30. When a bottle of perfume la opened in one corner of a room the smell spreads soon throughout the room.…