A. Freeze drying
B. Solar evaporation
C. Electrolytic
D. None of these
Related Mcqs:
- In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) ?
A. t = 15 – 0.0065 h
B. t = 15 + 0.0065 h
C. t = 0.0035 h – 15
D. t = 15 – 0.0035 h - Which of the following is an undesirable property of slag produced during the Pyrometallurgical method of metal extraction from its ore ?
A. High fusibility & fluidity
B. High thermal conductivity
C. Low density
D. High chemical activity - A common disinfectant used in village wells for disinfection of water is __________________?
A. Free chlorine
B. Bromine
C. Iodine
D. Potassium permanganate - A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?
A. Aqueous tension
B. Saturated humidity
C. Vapor pressure
D. Absolute humidity - Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?
A. Conduction
B. Convection
C. Radiation
D. Both A. & B. - Potable water means the water used for____________________?
A. Fire-fighting
B. Cooling
C. Drinking
D. Evaporation to produce steam - Natural water contains approximately ______________ percent of heavy water?
A. 0.015
B. 0.71
C. 1.2
D. 3.5 - Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be_______________?
A. More
B. Less
C. Same
D. Either more or less; depends on the climatic conditions - Speed of a submarine in deep sea & that of an aeroplane is measured by a/an___________________?
A. Pitot tube
B. Hot wire anemometer
C. Rotameter
D. Stroboscope - Alloys having more than 80% copper are generally more______________________?
A. Abrasion resistant
B. Corrosion resistant
C. Prone to season cracking
D. Machinable
