Q1. | Standard EDTA ( Ethylene Diamine Tetra Acetic Acid ) solution is used to determine : |
Q2. | The rate of filtration of pressure filters is : |
Q3. | The chlorine demand of a water sample was found to be 5.0 mg/lit. The amount of bleaching powder containing 30% available chlorine to be added to treat one liter of such a water sample is : |
Q4. | A city supply of 16000 cubic meters of water per day treated with chlorine with dosage of 0.6 ppm. For this purpose, requirement of 30% bleching powder per day would be : |
Q5. | The polluted water is one which : |
Q6. | If total hardness of water is greater than its total alkalinity, then carbonate hardness will be equal to : |