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Questions | Answers | Discussions | Knowledge sharing | Communities & more.
The maximum permissible limit (BIS) of turbidity in drinking water is
The correct answer is 5 NTU. Turbidity levels should be maintained between 1 and 5 NTU to keep the desirable drinking water quality as per the Bureau of Indian Standards.
The correct answer is 5 NTU. Turbidity levels should be maintained between 1 and 5 NTU to keep the desirable drinking water quality as per the Bureau of Indian Standards.
See lessBiological oxidation processes usually referred as biological treatment, are the most common form of
Biological oxidation processes usually referred to as biological treatment, are the most common form of secondary treatment.
Biological oxidation processes usually referred to as biological treatment, are the most common form of secondary treatment.
See lessWhich of the following substances are commonly used in a filter?
Various substances like filter paper, sand, cotton, charcoal, thin cloth etc., can be used as filters.
Various substances like filter paper, sand, cotton, charcoal, thin cloth etc., can be used as filters.
See lessPermanent hard water may be softened by passing it through
Hard water can be softened by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.
Hard water can be softened by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.
See lessHardness of water does not
The hardness of water does not affect the drinkability of water. The hardness of water is caused by the presence of different types of minerals like calcium and magnesium in high concentrations in it. This causes the formation of white flakes in a boiler when the hard water is boiled.
The hardness of water does not affect the drinkability of water. The hardness of water is caused by the presence of different types of minerals like calcium and magnesium in high concentrations in it. This causes the formation of white flakes in a boiler when the hard water is boiled.
See lessThe chemical oxygen demand (COD)measures the
COD. The chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in liquid waste. It is expressed in milligrams/grams per liter, which indicates the mass of oxygen consumed per liter of solution.
COD. The chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in liquid waste. It is expressed in milligrams/grams per liter, which indicates the mass of oxygen consumed per liter of solution.
See lessThe maximum desirable limit (BIS) of total hardness (as CaCo3) in drinking water is
In drinking-water, hardness is in the range 10–500 mg of calcium carbonate per litre
In drinking-water, hardness is in the range 10–500 mg of calcium carbonate per litre
See lessConventional tertiary treatment is
Tertiary treatment, which is final stage of conventional treatment technique, uses advanced treatment options and it focuses for specific pollutant removal, disinfection, etc. Some of the advanced treatment techniques used for PPCPs can also be included in the tertiary treatment.
Tertiary treatment, which is final stage of conventional treatment technique, uses advanced treatment options and it focuses for specific pollutant removal, disinfection, etc. Some of the advanced treatment techniques used for PPCPs can also be included in the tertiary treatment.
See lessZeolite softening process removes
It is a method of removing the permanent as well as temporary hardness of the water. It involves the precipitation of Calcium and Magnesium ions present in water.
It is a method of removing the permanent as well as temporary hardness of the water. It involves the precipitation of Calcium and Magnesium ions present in water.
See lessThe maximum desirable limit Bureau of Indian Standards (BIS) of lead in the drinking water is
Drinking water gets contaminated with lead when lead pipes are used for transportation of water. The prescribed upper limit concentration of lead in drinking water is about 50 ppb.
Drinking water gets contaminated with lead when lead pipes are used for transportation of water. The prescribed upper limit concentration of lead in drinking water is about 50 ppb.
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