Environmental Engineering
The main disadvantage of cement concrete sewers is

Difficulty in transportation due to heavy weight
Less life
Difficulty in construction
Less strength

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Environmental Engineering
The polluted water is one which

Consists of undesirable substances rendering it unfit for drinking and domestic use
Is contaminated
Contains pathogenic bacteria
Is safe and suitable for drinking and domestic use

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Environmental Engineering
Assertion A: The consumption of water increases with increase in the distribution pressure.Reason R: Higher distribution pressure causes more loss and waste of waterSelect your answer according to the coding system given below

Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Both A and R is true and R is the correct explanation of A

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Environmental Engineering
Assertion 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 filtersSelect your answer based on the coding system given below:

A is true but R is false
A is false but R is true
Both A and R is true but R is not the correct explanation of A
Both A and R is true and R is the correct explanation of A

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