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Polythene is industrially prepared by the polymerisation of

A. styrene

B. methane

C. ethylene

D. acetylene

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  1. Which of the following elements is obtained from sea weeds ?
  2. Which of the following characters is not shown by hydrogen
  3. What is the unit for measuring the pitch or frequency of sound ?
  4. The solar eclipse occurs when
  5. The location and energy of an electron in an atom can be specified by
  6. The speed of light with the rise in the temperature of the medium
  7. Quartz crystals normally used in quartz clocks etc. is chemically
  8. Nitrification means
  9. The oxide of Nitrogen used in medicine as anaesthetic is
  10. Polythene is industrially prepared by the polymerisation of
  11. Which of the following elements is a metal
  12. The fastest acting enzyme in the biological kingdom is
  13. Lightening cause rainfall because
  14. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  15. The hardest substance available on earth is
  16. Epoxy resins is used as
  17. Which of the following is commonly called a polyamide ?
  18. According to Daltons atomic theory the smallest particle which can exist independently is
  19. The metal that is present in Photo Films is
  20. Liquefied Petroleum gas (LPG) consists of mainly
  21. The chemial name of Uria is
  22. The intencity of Earthquakes is measured on
  23. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  24. Cell membrane is
  25. Old-written material, which cannot be read easily can be read by
  26. The formula of Plaster of Paris is
  27. Which of the following is the lightest metal ?
  28. Which of the following is in liquid form at room temperature ?
  29. Brass gets discoloured in air due to the presence of which gas in air
  30. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?