Previous Year Very Short Questions of CHEM (DIPLOMA Mechanical Engineering (RAC) 1st-2nd)

Chemistry

Previous year question paper with solutions for Chemistry

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  1. The combing capacity of an element is called its _________
  2. Horizontal rows in periodic table are called ____________
  3. Negatively charged ions are called __________
  4. Volume of 1 mole of a substance is called_______
  5. M shell has _________ sub-shells.
  6. Hard water is not used in boilers for raising steam because is forms ________and __________.
  7. Any substance which has a tendency o donate a proton is called__________.
  8. Important ore of iron is_____________.
  9. Sulphide ores are concentrated by ______________process.
  10. The process of depositing Zinc on iron is called___________
  11. Producer gas is a mixture of CO & _____________.
  12. Percentage of fixed carbon can be determined by ___________ analysis.
  13. A good lubricant should have ________flash point.
  14. In a paint, gypsum is used as__________
  15. Fire clay bricks are ________ in nature.
  16. Polythene is a ____ polymer.
  17. Carbon monoxide is ___________ toxic than CO2
  18. Slow but continuous eating away of the metal by the chemical action with surrounding is called _________.
  19. Coating of iron with zinc by hot dipping method is called ..............
  20. Slag is a product of ......... and ........... .
  21. Brass is manily a mixture of ................ and ................... metal.
  22. Producer gas is mixture of ............ and .................... .
  23. Carbon monoxide is ............. toxic than CO2.
  24. The unit of heat is ............ .
  25. Acid refractories are resistant to ..............
  26. Pigment varnish is called ..............
  27. PAN means .......... .