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The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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  1. The intencity of Earthquakes is measured on
  2. The element present in the largest amount in rocks and minerals is
  3. Permanent hardness of water can be removed by adding
  4. Which of the following elements is non-radioactive?
  5. The colour of Emerald is
  6. Which of the following is in liquid form at room temperature ?
  7. The type of glass used in making prisms and lenses is
  8. The speed of light with the rise in the temperature of the medium
  9. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  10. Which of the following is commonly called a polyamide ?
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  14. Earth's seasons are caused by which of the following?
  15. Nitrification means
  16. The major ingredient of leather is
  17. The marine animal called dugong which is vulnerable to extinction is a/an
  18. Epoxy resins is used as
  19. The smallest functional and structural unit of kidney is called as
  20. The location and energy of an electron in an atom can be specified by
  21. The property of a substance to absorb moisture from the air on exposure is called
  22. The chemial name of Uria is
  23. Brass gets discoloured in air due to the presence of which gas in air
  24. The metal that is present in Photo Films is
  25. The removal of top soil by water or wind is called
  26. Old-written material, which cannot be read easily can be read by
  27. The metallic constituents of hard water are
  28. One fathom is equal to
  29. The formula of Plaster of Paris is
  30. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…