Water Supply Engineering

311. Water having pH value as 6, is

1. Alkaline
2. Acidic
3. Neutral
4. None of these

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312. Water is distributed to consumers by gravitational system, in

1. Dehradun
2. Mumbai
3. Delhi
4. Both (a) and (b)

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313. Water losses in water supply, is assumed as

1. 5 %
2. 7.5 %
3. 10 %
4. 15 %

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314. Water may contain

1. Bicarbonate alkalinity
2. Carbonate alkalinity
3. Hydroxide alkalinity
4. All the above

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315. Water may not contain much impurity if its source is

1. Reservoirs
2. Stream flowing in plains
3. Lakes in lower regions
4. Spring along hill slopes

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316. Water supply includes

1. Collection, transportation and treatment of water
2. Distribution of water to consumers
3. Provision of hydrants for fire fighting
4. All the above

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317. Water supply system includes

1. Digging a well for water
2. Construction of dams
3. Construction of canals
4. Entire arrangement from source to distribution

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318. Water to the consumers may be supplied from

1. Infiltration galleries connected to sump well
2. Infiltration well dug out on the banks of rivers
3. Ranney wells sunk to the water level
4. All the above

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319. Well treated water is generally supplied for

1. Domestic use
2. Commercial use
3. Public use
4. All the above

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320. When gravity and pumping systems of water distribution are adopted, the type of distribution reservoir, is

1. Elevated tank
2. Ground source reservoir
3. Intz tank
4. Stand pipe

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