Home

The major ingredient of leather is

A. Nucleic acid

B. Carbohydrate

C. Collagen

D. Polymer

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

You can do it
  1. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  2. The fastest-running terrestrial animal is
  3. The intencity of Earthquakes is measured on
  4. The solar eclipse occurs when
  5. According to Daltons atomic theory the smallest particle which can exist independently is
  6. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
  7. The metallic constituents of hard water are
  8. Brass gets discoloured in air due to the presence of which gas in air
  9. The oxide of Nitrogen used in medicine as anaesthetic is
  10. Liquefied Petroleum gas (LPG) consists of mainly
  11. Polythene is industrially prepared by the polymerisation of
  12. Which of the following elements is non-radioactive?
  13. The formula of Plaster of Paris is
  14. The speed of light with the rise in the temperature of the medium
  15. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  16. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  17. One fathom is equal to
  18. The major ingredient of leather is
  19. Permanent hardness of water can be removed by adding
  20. The most important ore of Aluminium is
  21. Nitrification means
  22. The element present in the largest amount in rocks and minerals is
  23. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
  24. Quartz crystals normally used in quartz clocks etc. is chemically
  25. Rust is
  26. Apparatus invented by Archimedes is :
  27. The type of glass used in making prisms and lenses is
  28. The fastest acting enzyme in the biological kingdom is
  29. In an atomic nucleus, neutrons and protons are held together by
  30. Earth's seasons are caused by which of the following?