The most important ore of Aluminium is

A. Calamine

B. Calcite

C. Galena

D. Bauxite

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  1. The smallest functional and structural unit of kidney is called as
  2. The solar eclipse occurs when
  3. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  4. Cell membrane is
  5. The element present in the largest amount in rocks and minerals is
  6. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  7. The fastest-running terrestrial animal is
  8. One fathom is equal to
  9. What is the unit for measuring the pitch or frequency of sound ?
  10. The intencity of Earthquakes is measured on
  11. Which of the following is in liquid form at room temperature ?
  12. Water has maximum density at
  13. The removal of top soil by water or wind is called
  14. According to Daltons atomic theory the smallest particle which can exist independently is
  15. The metallic constituents of hard water are
  16. Bromine is
  17. Brass gets discoloured in air due to the presence of which gas in air
  18. In an atomic nucleus, neutrons and protons are held together by
  19. Polythene is industrially prepared by the polymerisation of
  20. Apparatus invented by Archimedes is :
  21. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  22. Earth's seasons are caused by which of the following?
  23. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  24. The recent atomic weight scale is based on
  25. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  26. Liquefied Petroleum gas (LPG) consists of mainly
  27. Glass is made from the mixture of
  28. The speed of light with the rise in the temperature of the medium
  29. The location and energy of an electron in an atom can be specified by
  30. Which of the following elements is obtained from sea weeds ?