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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 intencity of Earthquakes is measured on
  2. Lightening cause rainfall because
  3. Old-written material, which cannot be read easily can be read by
  4. The formula of Plaster of Paris is
  5. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  6. The location and energy of an electron in an atom can be specified by
  7. The hardest substance available on earth is
  8. What is the unit for measuring the pitch or frequency of sound ?
  9. Which of the following is commonly called a polyamide ?
  10. Pollination by birds is called
  11. The chemial name of Uria is
  12. The smallest functional and structural unit of kidney is called as
  13. Glass is made from the mixture of
  14. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  15. According to Daltons atomic theory the smallest particle which can exist independently is
  16. The property of a substance to absorb moisture from the air on exposure is called
  17. Earth's seasons are caused by which of the following?
  18. Which of the following elements is a metal
  19. Which of the following is in liquid form at room temperature ?
  20. The type of glass used in making prisms and lenses is
  21. Which of the following is the lightest metal ?
  22. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  23. Cell membrane is
  24. The metallic constituents of hard water are
  25. The removal of top soil by water or wind is called
  26. The element present in the largest amount in rocks and minerals is
  27. The major ingredient of leather is
  28. Brass gets discoloured in air due to the presence of which gas in air
  29. Epoxy resins is used as
  30. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?