Related Questions

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 of the above
A common disinfectant used in village wells for disinfection of water is
A Free chlorine
B Bromine
C Iodine
D Potassium permanganate
Which of the following is a waterborne disease?
A Smallpox
B Malaria
C Cholera
D Tuberculosis
Which of the following is the most widely used disinfectant in water treatment?
A Chlorine
B Irradiation of water by ultraviolet light
C Cation exchanger
D Coagulation
Dose of chlorine for disinfection of water is about __________ mg/litre of water.
A 0.01
B 0.1
C 0.3
D 1
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
Disinfectant হিসাবে কোনটি ব্যবহৃত হয় না?
A স্যাভলন
B লাইজল
C ফেনল
D ইথাইল অ্যালকোহল
Dettol --- the antiseptic disinfectant is produced by---
A ACME
B Reckitt Benckiser
C AIC
D SQUARE
Disinfection of water results in
A Removal of turbidity
B Removal of hardness
C Killing of disease bacteria
D Complete sterilisation
The suitable method for disinfection of swimming pool water is
A Ultra violet rays treatment
B Lime treatment
C By using potassium permanganate
D Chlorination

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