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The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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  1. Apparatus invented by Archimedes is :
  2. Which of the following elements is a metal
  3. The removal of top soil by water or wind is called
  4. What is the unit for measuring the pitch or frequency of sound ?
  5. The metal used in storage batteries
  6. Which of the following elements is obtained from sea weeds ?
  7. The property of a substance to absorb moisture from the air on exposure is called
  8. Brass gets discoloured in air due to the presence of which gas in air
  9. The location and energy of an electron in an atom can be specified by
  10. Lightening cause rainfall because
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  14. When a gas is turned into a liquid, the process is called
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  16. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
  17. The hardest substance available on earth is
  18. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  19. Water has maximum density at
  20. Pollination by birds is called
  21. The major ingredient of leather is
  22. Permanent hardness of water can be removed by adding
  23. Nitrification means
  24. Polythene is industrially prepared by the polymerisation of
  25. The chemial name of Uria is
  26. Quartz crystals normally used in quartz clocks etc. is chemically
  27. Which of the following is the lightest metal ?
  28. Which of the following is in liquid form at room temperature ?
  29. The fastest-running terrestrial animal is
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