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Which of the following is the lightest metal ?

A. Mercury

B. Lithium

C. Lead

D. Silver

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

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  1. Water has maximum density at
  2. Which of the following characters is not shown by hydrogen
  3. The metal used in storage batteries
  4. Polythene is industrially prepared by the polymerisation of
  5. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  6. Brass gets discoloured in air due to the presence of which gas in air
  7. When a gas is turned into a liquid, the process is called
  8. Apparatus invented by Archimedes is :
  9. In an atomic nucleus, neutrons and protons are held together by
  10. The fastest-running terrestrial animal is
  11. The formula of Plaster of Paris is
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  13. The smallest functional and structural unit of kidney is called as
  14. Which of the following elements is non-radioactive?
  15. The property of a substance to absorb moisture from the air on exposure is called
  16. The speed of light with the rise in the temperature of the medium
  17. Epoxy resins is used as
  18. Glass is made from the mixture of
  19. The metal that is present in Photo Films is
  20. Which of the following elements is obtained from sea weeds ?
  21. The intencity of Earthquakes is measured on
  22. What is the unit for measuring the pitch or frequency of sound ?
  23. Quartz crystals normally used in quartz clocks etc. is chemically
  24. The major ingredient of leather is
  25. Pollination by birds is called
  26. The fastest acting enzyme in the biological kingdom is
  27. The removal of top soil by water or wind is called
  28. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
  29. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  30. The hardest substance available on earth is