Chlorine acts as a bleaching agent only in the presence of

A. Dry air

B. Pure oxygen

C. Moisture

D. Sunlight

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

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  1. If a solid is compressed adiabatically in its elastic range, its __________ remains constant
  2. In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb…
  3. Blow off cock is provided in steam boiler to
  4. In TIG welding, thoriated tungsten electrodes are used, because it
  5. The most commonly used moderator in nuclear power plants is
  6. Drossing is a __________ operation.
  7. __________ is used as a material of construction for the blade of power saw.
  8. Silicon percentage in the silicon steel used for electrical appliances/equipments is
  9. Pick out the wrong statement.
  10. __________ cannot increase the fatigue strength of a material.
  11. Maximum permissible air velocity in pipelines is about __________ metre/second.
  12. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
  13. Pick out the wrong statement.
  14. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional…
  15. In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just…
  16. Fibrous fracture is normally encountered in the __________ materials.
  17. The hardenability of steel decreases with
  18. To counteract the bad effects of strain hardening on a cold formed part, it must be
  19. 'Cryogenics' is concerned with the generation & use of low temperature in the range of
  20. Brinell Hardness Number (BHN) for talc is approximately in the range of
  21. Maraging steels derive their strength from the following mechanism:
  22. Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying…
  23. In chemical dehumidification process
  24. The only suitable method for hardening the low carbon steel is case hardening. Which of the following…
  25. CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because…
  26. Projection welding & stud welding is categorised as the __________ welding.
  27. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
  28. In the Bayer's process, bauxite is digested under pressure using
  29. Increase in temperature, in general results in the
  30. According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear…