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When a gas is turned into a liquid, the process is called

A. evaporation

B. condensation

C. sublimation

D. deposition

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  1. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  2. The most important ore of Aluminium is
  3. What is the unit for measuring the pitch or frequency of sound ?
  4. The metal used in storage batteries
  5. The element present in the largest amount in rocks and minerals is
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  12. The hardest substance available on earth is
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  16. Cell membrane is
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  18. The location and energy of an electron in an atom can be specified by
  19. The solar eclipse occurs when
  20. Polythene is industrially prepared by the polymerisation of
  21. One fathom is equal to
  22. Rust is
  23. The oxide of Nitrogen used in medicine as anaesthetic is
  24. Permanent hardness of water can be removed by adding
  25. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  26. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  27. Water has maximum density at
  28. In an atomic nucleus, neutrons and protons are held together by
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  30. Bromine is