Environmental Engineering Sheet 23
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1) Question.
hardy cross method of analysis of distribution system
i) involves successive trials
ii) takes economic aspects into account
iii) is time consuming
The correct answer is
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2) Question.
As compared to cast iron pipes, steel pipes are
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3) Question.
Activated carbon is used for
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4) Question.
Which of the following compounds is widely unsed for algae cantrol?
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5) Question.
The major disadvantage of lime soda process of water softening is that
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6) Question.
Disinfection of water results in
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7) Question.
Cleaning is done by
i) scraping and removal in slow sand filters
ii) back washing in slow sand filters
iii) scraping and r emoval in rapid sand filters
iv) back washing in rapid sand filters
The correct answer is
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8) Question.
Double filtration is used
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9) Question.
Assertopm A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters.
Select your answer based on the coding system given below:
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10) Question.
As compared to rapid sand filters, slow sand filters give
i) slower filtration rate
ii) higher filtration rate
iii) lesser efficiency in removal of bacteria
iv) higher efficiency in removal of bacteria
the correct answer is
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11) Question.
The equipment used for removing paper and rags from the sewers is called -
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12) Question.
The effluents from the septic tank are discharged into -
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13) Question.
A septic tank is a -
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14) Question.
The privy pit should be located at least.......from the well or other ground water supply.
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15) Question.
The underground structure in the form of a circular or rectangular tank for the purposes of admitting sewage into it from the intercepting chamber is called a -
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16) Question.
The most suitable excreta disposal unit for human excreta is -
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17) Question.
The anti-siphonage pipe is not required in -
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18) Question.
A pipe installed for ventilation purpose is called -
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19) Question.
A pipe used to carry discharge from sanitary fittings like bathrooms, kitchens etc. is called -
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20) Question.
The pipe through which liquid waste carrying human excreta flows, is called -
Answer.
