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Glass is made from the mixture of

A. Quartz and mica

B. Sand and salt

C. Sand and silicates

D. None of these

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  1. The fastest-running terrestrial animal is
  2. The chemial name of Uria is
  3. The fastest acting enzyme in the biological kingdom is
  4. Which of the following is commonly called a polyamide ?
  5. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  6. Polythene is industrially prepared by the polymerisation of
  7. What is the unit for measuring the pitch or frequency of sound ?
  8. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  9. The oxide of Nitrogen used in medicine as anaesthetic is
  10. Permanent hardness of water can be removed by adding
  11. Epoxy resins is used as
  12. The most important ore of Aluminium is
  13. The metallic constituents of hard water are
  14. Pollination by birds is called
  15. Liquefied Petroleum gas (LPG) consists of mainly
  16. The metal that is present in Photo Films is
  17. The major ingredient of leather is
  18. Quartz crystals normally used in quartz clocks etc. is chemically
  19. The solar eclipse occurs when
  20. Which of the following is in liquid form at room temperature ?
  21. The removal of top soil by water or wind is called
  22. The speed of light with the rise in the temperature of the medium
  23. According to Daltons atomic theory the smallest particle which can exist independently is
  24. The smallest functional and structural unit of kidney is called as
  25. Lightening cause rainfall because
  26. In an atomic nucleus, neutrons and protons are held together by
  27. Earth's seasons are caused by which of the following?
  28. Brass gets discoloured in air due to the presence of which gas in air
  29. The hardest substance available on earth is
  30. The formula of Plaster of Paris is