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The most important ore of Aluminium is

A. Calamine

B. Calcite

C. Galena

D. Bauxite

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  1. The fastest acting enzyme in the biological kingdom is
  2. The chemial name of Uria is
  3. Lightening cause rainfall because
  4. The hardest substance available on earth is
  5. Which of the following elements is obtained from sea weeds ?
  6. The element present in the largest amount in rocks and minerals is
  7. The metallic constituents of hard water are
  8. Which of the following elements is non-radioactive?
  9. The metal that is present in Photo Films is
  10. The smallest functional and structural unit of kidney is called as
  11. The property of a substance to absorb moisture from the air on exposure is called
  12. Bromine is
  13. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  14. In an atomic nucleus, neutrons and protons are held together by
  15. Nitrification means
  16. Which of the following is in liquid form at room temperature ?
  17. The colour of Emerald is
  18. The oxide of Nitrogen used in medicine as anaesthetic is
  19. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  20. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
  21. One fathom is equal to
  22. Which of the following characters is not shown by hydrogen
  23. Brass gets discoloured in air due to the presence of which gas in air
  24. Which of the following is commonly called a polyamide ?
  25. Water has maximum density at
  26. The speed of light with the rise in the temperature of the medium
  27. According to Daltons atomic theory the smallest particle which can exist independently is
  28. When a gas is turned into a liquid, the process is called
  29. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  30. Glass is made from the mixture of