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Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called

A. Carbon Monoxide

B. Phosgene

C. Phosphine

D. None of these

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  1. Water has maximum density at
  2. The chemial name of Uria is
  3. The metal that is present in Photo Films is
  4. The fastest acting enzyme in the biological kingdom is
  5. Which of the following elements is non-radioactive?
  6. Permanent hardness of water can be removed by adding
  7. Rust is
  8. Glass is made from the mixture of
  9. Which of the following elements is obtained from sea weeds ?
  10. Quartz crystals normally used in quartz clocks etc. is chemically
  11. The most important ore of Aluminium is
  12. The fastest-running terrestrial animal is
  13. Polythene is industrially prepared by the polymerisation of
  14. Bromine is
  15. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  16. Which of the following is in liquid form at room temperature ?
  17. Which of the following is commonly called a polyamide ?
  18. Earth's seasons are caused by which of the following?
  19. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  20. According to Daltons atomic theory the smallest particle which can exist independently is
  21. Old-written material, which cannot be read easily can be read by
  22. One fathom is equal to
  23. The solar eclipse occurs when
  24. The metal used in storage batteries
  25. The intencity of Earthquakes is measured on
  26. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  27. The hardest substance available on earth is
  28. Brass gets discoloured in air due to the presence of which gas in air
  29. The type of glass used in making prisms and lenses is
  30. Epoxy resins is used as