A. Turbidity
B. Color (Hazen)
C. Total solids
D. All A., B. & C.
Related Mcqs:
- Pick out the wrong statement. A. Caustic embrittlement of boiler’s metallic parts is caused by high concentration of caustic soda in boiler feed water___________________?
B. Cooling and freezing of water kills the bacteria present in it
C. With increasing boiler operating pressure of steam, the maximum allowable concentration of
silica in feed water goes on decreasing
D. Dissolved oxygen content in high pressure boiler feed water should be nil - Soluble silica present in boiler feed water can be removed by______________________?
A. Coagulation
B. Filtration
C. Anion exchanger
D. Preheating it - Deaeration of high pressure boiler feed water is done to reduce ___________________?
A. Foaming from boilers
B. Its dissolved oxygen content
C. Its silica content
D. Caustic embrittlement - With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure___________________?
A. Increases
B. Decreases
C. Remain same
D. Decreases linearly - If two gases have same reduced temperature and reduced pressure, then they will have the same____________________?
A. Volume
B. Mass
C. Critical temperature
D. None of these - Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates__________________?
A. Use of only one graph for all gases
B. Covering of wide range
C. Easier plotting
D. More accurate plotting - Gases having same reduced temperatures and reduced pressures_________________?
A. Deviate from ideal gas behaviour to the same degree
B. Have nearly the same compressibility factor
C. Both A. and B.
D. Neither A. nor B. - High noise levels produced during operation of fans and compressors can be reduced by using__________________?
A. Mufflers (silencers)
B. Acoustic absorbent
C. Lagging of noisy duct
D. None of these - The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of _____________ of water?
A. Dissolved oxygen content
B. Biological oxygen demand
C. Vapor pressure
D. All A., B. and C. - Tri-sodium phosphate is used in boiler water treatment to reduce____________________?
A. Turbidity
B. Caustic embrittlement
C. Suspended silica
D. Dissolved oxygen
