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