Helium is produced on commercial scale from

A. Air

B. Natural gas

C. Coke oven gas

D. None of these

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  1. Viscose rayon is
  2. Very dilute solutions are generally used in fermentation reactions for which the optimum temperature…
  3. Raw materials used for producing __________ cement does not contain iron oxide.
  4. Trinitro-toluene (TNT) is
  5. 'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
  6. Helium is produced on commercial scale from
  7. Phenol formaldehyde
  8. Phthalic anhydride is made by the
  9. Liquor poisoning generally occurs due to the presence of __________ in it.
  10. Production of one ton of cement requires about __________ tons of limestone.
  11. One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup…
  12. Starting material for the commercial production of ethyl alcohol in India is
  13. Comparing sulphate process with sulphite process, we find that __________ in the later.
  14. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  15. Solvent extracted oil
  16. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic…
  17. The function of gypsum addition during cement making is to
  18. Use of chlorine in the treatment of sewage
  19. Fish contains about __________ percent oil.
  20. Sugar content in sugarcane on cane basis is about __________ percent by weight.
  21. Nylon-66 is manufactured from
  22. Claude process of gas liquefaction employs
  23. Pick out the endothermic reaction out of the following.
  24. __________ is a thermosetting plastic.
  25. Styrene is produced from ethyl benzene by the process of
  26. Which of the following paper does not require a filler during manufacture?
  27. Fusion of bauxite and __________ produces high alumina cement.
  28. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical…
  29. Which of the following is not responsible for causing permanent hardness of water?
  30. In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 2SO3), the reverse reaction becomes appreciable…