A. Turbidity
B. Color
C. Hardness
D. Dissolved gases
Related Mcqs:
- Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?
A. Food industry
B. Municipal sewage treatment
C. Petroleum refinery
D. Iron & steel plant - Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?
A. With greater number of blades
B. Of increased diameter
C. Both A. & B.
D. Neither A. nor B. - The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?
A. Chlorine
B. Alkalis
C. Benzene hexachloride
D. Alkyl benzene sulphonate (ABS) - Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of_________________?
A. Ozone and iodine
B. Chlorine or its compounds
C. Ultraviolet light for irradiation of water
D. All A., B. & C. - For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?
A. 6738.9
B. 6753.5
C. 7058.3
D. 9000 - Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are pv B and pv w respectively. The partial pressure of benzene in air-vapour mixture is_________________?
A. PvB
B. xB.PvB
C. (Patm – Pvw)xB
D. xB.Patm - The progressive warming up of the earth’s surface is mainly due to the___________________?
A. Automobile exhaust
B. Blanketing effect of CO2 in the atmosphere
C. De-forestation
D. Thickening of ozone layer - The material used for coating the welding electrode is termed as the___________________?
A. Flux
B. Slag
C. Protective layer
D. Binder - Raoult’s law is not applicable to the___________________?
A. Solutes which dissociate or associate in the particular solution
B. Concentrated solutions
C. Both B. & C.
D. Solutions containing non-volatile solute - Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?
A. Nature of the liquid
B. Nature of the gas
C. Temperature of the liquid
D. Total pressure
