Home

The compound of iron used in the manufacture of blue-black ink is

A. ferric chloride

B. ferric sulphate

C. ferric thiocyanate

D. ferrous sulphate

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

You can do it
  1. Iron is coated with zinc to prevent rusting. The process is called
  2. A compound of carbon used as anaesthetic is
  3. Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
  4. Riboflavin deficiency causes
  5. Heavy water was discovered by
  6. ________ is left behind after distillation of petroleum.
  7. The earliest name given to nitrogen was
  8. The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known…
  9. One of the ingredients of the paste on the side of a match box is
  10. The poisonous nature of carbon monoxide is due to
  11. In the mouth, starch is converted into ______ by the action of saliva.
  12. Methylated spirit is a mixture of
  13. Diamonds are weighed in
  14. Proteins are polymerisation products of
  15. Quick lime has the formula
  16. Rusting is
  17. Solid carbon dioxide (Dry ice) is also known as
  18. A drug that is usually administered for malaria is
  19. The first organic compound prepared in the laboratory was
  20. In the common soda-acid fire extinguisher, the fire is put out by
  21. The commonest ore of aluminium is
  22. Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
  23. Calomel is
  24. A substance used as a fire-extinguisher under the trade name of Pyrene is
  25. Galvanised iron sheets are protected from rusting due to the presence of a layer of
  26. A form of carbon which is a good lubricant is
  27. The non-metal which is electropositive is
  28. Which one of the following metals is used to extract another metal?
  29. BHC is a
  30. Which of the following metals is the best conductor of heat and electricity?