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Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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  1. Which of the following is commonly called a polyamide ?
  2. Which of the following is the lightest metal ?
  3. Bromine is
  4. One fathom is equal to
  5. The type of glass used in making prisms and lenses is
  6. The intencity of Earthquakes is measured on
  7. Pollination by birds is called
  8. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  9. The speed of light with the rise in the temperature of the medium
  10. Quartz crystals normally used in quartz clocks etc. is chemically
  11. The major ingredient of leather is
  12. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  13. The removal of top soil by water or wind is called
  14. In an atomic nucleus, neutrons and protons are held together by
  15. Cell membrane is
  16. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  17. The Panda belongs to the same family as that of
  18. Which of the following elements is a metal
  19. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  20. The most important ore of Aluminium is
  21. Nitrification means
  22. Rust is
  23. Epoxy resins is used as
  24. The hardest substance available on earth is
  25. The oxide of Nitrogen used in medicine as anaesthetic is
  26. The element present in the largest amount in rocks and minerals is
  27. Liquefied Petroleum gas (LPG) consists of mainly
  28. Which of the following characters is not shown by hydrogen
  29. Which of the following is in liquid form at room temperature ?
  30. The colour of Emerald is