A. High temperature incineration
B. Pathological incineration
C. Pyrolysis
D. Underground burial in concrete containers
Related Mcqs:
- Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
A. I-131
B. Sr-90
C. Au-198
D. Ra-226 - What are the methods of treatment & disposal of radioactive wastes ?
A. Evaporation & chemical precipitation
B. Biological methods & adsorption in ion exchange materials
C. Fixing into a solid mass with cement and sinking deep in the sea
D. All A., B. & C. - World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?
A. Arizona (U.S.A.)
B. Chernobyl (undivided U.S.S.R.)
C. Pennsylvania (U.S.A.)
D. Moscow (U.S.S.R.) - Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?
A. Quenching of hot coke
B. Discharging in the river stream
C. Filtration and recycling for cooling coke oven gas
D. None of these - The biological decomposition of organic substances in wastes controlled conditions is called_________________?
A. Incineration
B. Biological oxidation
C. Composting
D. None of these - Which of the following is not a practical method of low level radioactive waste disposal ?
A. Dilution with inert material
B. Discharging to atmosphere through tall stacks after dilution
C. Disposing off in rivers & oceans
D. Filling in steel crates and shooting it off out of earth’s gravity - Radioactive substances present in the polluted water stream can be removed by_________________?
A. Biological oxygen treatment
B. Coagulation and filtration
C. Adsorption in ion exchange materials
D. None of these - Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?
A. By chemical coagulation
B. In sedimentation tanks equipped with mechanical scrapper
C. In vacuum filter
D. In clarifiers - Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________________?
A. Biological oxygen pond
B. Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)
C. Lagoons
D. Filtration - Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air’s water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes_________________?
A. Poor visibility due to sky darkening
B. Irritation in eyes
C. Respiratory trouble
D. All A., B. and C.
