Which metal is used in storage batteries?

A. Copper

B. Lead

C. Tin

D. Iron

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. For an electron orbiting in a hydrogen atom, the necessary centripetal force keeping it in orbit is…
  2. An electric kettle used for boiling hard water has a white scale deposited on its heating element. This…
  3. Nichrome is used in electric heaters and irons because
  4. The best estimates of the age of the earth comes from the studies of
  5. The numerical reading of the Fahrenheit thermometer of a given temperature
  6. Out of the following, name the fluorescent substance.
  7. The Indian Space Research Organisation (ISRO) is located at
  8. In which of the following will a piece of iron weigh most?
  9. In experiments on static electricity the standard method for obtaining small amounts of positive electricity…
  10. The spectrum of white light can be studied by
  11. Fish and other aquatic creatures can live inside a deep frozen pond because
  12. Which is the densest planet of the solar system?
  13. If you want a sound proof room, the walls should be
  14. Mercury is used in a barometer because
  15. The coil of an electric heater is made of
  16. Out of the following which is an insulator?
  17. The mirage is a phenomenon
  18. A stationary elevated object has
  19. The strength of an electromagnet can be increased by
  20. The radiator in a car serves to
  21. Chronometer la an instrument to measure
  22. Gamma radiations are used for
  23. A person does not sink in the Dead Sea because
  24. Air escaping rapidly from a narrow orifice in an inflated tyre feels cool because
  25. The ballistic missile, Agni 11, tested by India has a maximum range of
  26. In a longitudinal wave, the direction of propagation of the wave is
  27. The theory that the earth constituted the centre of the universe around which the sun and the planets…
  28. X-rays are used
  29. Cyclotron is an apparatus used
  30. A heavenly body similar in nature to the sun intensely hot glowing mass that produces its energy by…