| 1. | The odour of water can be determined by ? | |
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thermometer
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Osmoscope
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Jackson's turbidimeter
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none of these
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Report Question| 2. | The finely divided dispersion of solid particles which are not visible to the naked eye and cannot be removed by ordinary filters are known as ? | |
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suspended impurities
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dissolved impurities
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colloidal impurities
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none of these
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| 3. | According to Indian standards, the consumption of water per capita per day for nursing homes, boarding schools and hostels is ? | |
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85 litres
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100 litres
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115 litres
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135 litres
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| 4. | The maximum permissible chloride content in water for domestic supplies should not exceed ? | |
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250 ppm
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350 ppm
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450 ppm
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550 ppm
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| 5. | The maximum permissible colour for domestic supplies, on platinum cobalt scale is ? | |
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5 to 10 ppm
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10 to 20 ppm
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20 to 30 ppm
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30 to 40 ppm
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| 6. | The maximum acidity in water will occur at a pH value of ? | |
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0
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2
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7
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14
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| 7. | When the pO value of water is 5, then it has ? | |
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no perceptible odour
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distinct odour
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faint odour
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extremely strong odour
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| 8. | The turbidity in water is caused due to ? | |
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silt
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clay
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finely divided organic matter
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all of these
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| 9. | The continuous flow of water may be expected from ? | |
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surface springs
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artesian springs
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gravity springs
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all of these
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| 10. | The amount of water collected in a reservoir is divided into three portions and the order of their existance from bottom to the top is ? | |
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useful storage, surcharge storage, dead storage
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useful storage, dead storage, surcharge storage
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dead storage, useful storage, surcharge storage
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none of the above
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