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Soaps remove dirt by

A. Increasing the surface tension

B. Decreasing wettability

C. Supplying hydrophilic group

D. None of these

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  1. Coke used for the production of calcium carbide should have
  2. In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 2SO3), the reverse reaction becomes appreciable…
  3. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart…
  4. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
  5. Coal tar is used as a
  6. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
  7. Which of the following is used as a coagulant in water treatment?
  8. Vegetable oils and fats basically differ in their
  9. Pick out the wrong statement.
  10. Cumene is the starting material for the production of
  11. Hydrochloric acid is also known as
  12. Pick out the wrong statement.
  13. Pick out the wrong statement.
  14. __________ acid is the main constituent of cotton seed oil.
  15. Iron ore hematite is concentrated using
  16. Which of the following is not present in bagasse fibre?
  17. Phenol formaldehyde resin is used as an adhesive in making
  18. Cellulose percentage in bamboo fibre is about
  19. In the Solvay process, the product from the calciner is
  20. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
  21. Rotary kiln is not involved in the production of
  22. Sulphur removal by heating of pyrite ore in presence of air is called its
  23. Fermentation is adversely affected by the
  24. Consider the production of ammonia from methene and air as raw materials. The catalysts used are:(i)…
  25. Ca(OH)2 is called
  26. Temporary hardness of water can be removed by
  27. Alkylbenzene sulfonate (ABS) is a
  28. For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________…
  29. Sucrose is a
  30. Which one of the following is not likely to be a constituent of vegetable oils?