A. June
B. December
C. July
D. September
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
A. Poor visibility due to sky darkening
B. Irritation in eyes
C. Respiratory trouble
D. All A., B. and C.
A. Embrittlement & decrease of folding resistance of paper
B. Cracking of rubber products
C. Fading of dye on textiles
D. Damage of electrical insulator on high tension power line
A. Thermal power plant
B. Petroleum refinery
C. Nitric acid plant
D. Sulphuric acid plant
A. Wet scrubber
B. Bag filter
C. Electrostatic precipitators
D. Dust catcher
A. Calcium
B. Fluorine
C. Phosphorous
D. Sulphur