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The location and energy of an electron in an atom can be specified by

A. Atomic number

B. Atomic mass

C. Quantum numbers

D. None of these

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  1. Liquefied Petroleum gas (LPG) consists of mainly
  2. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  3. Nitrification means
  4. In an atomic nucleus, neutrons and protons are held together by
  5. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  6. Permanent hardness of water can be removed by adding
  7. Which of the following is the lightest metal ?
  8. Which of the following elements is a metal
  9. When a gas is turned into a liquid, the process is called
  10. The metal used in storage batteries
  11. The metallic constituents of hard water are
  12. The most important ore of Aluminium is
  13. The metal that is present in Photo Films is
  14. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  15. Epoxy resins is used as
  16. Apparatus invented by Archimedes is :
  17. Which of the following characters is not shown by hydrogen
  18. The solar eclipse occurs when
  19. The oxide of Nitrogen used in medicine as anaesthetic is
  20. The fastest acting enzyme in the biological kingdom is
  21. The smallest functional and structural unit of kidney is called as
  22. Old-written material, which cannot be read easily can be read by
  23. The removal of top soil by water or wind is called
  24. Bromine is
  25. Glass is made from the mixture of
  26. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  27. Brass gets discoloured in air due to the presence of which gas in air
  28. The formula of Plaster of Paris is
  29. Polythene is industrially prepared by the polymerisation of
  30. Pollination by birds is called