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Water-and-waste-water Questions Set 19:

Quiz Mode

Which of the following pairs is/are correctly matched?

2 and 3

1 and 3

1 alone

1, 2 and 3

Solution:

Which instrument is used for measuring the color of water?

Tintometer

Tensiometer

Lysimeter

Planimeter

Solution:

What is the recommended threshold odour number for public water supply?

Not more than 3

3.1

Greater than 3.5

Solution:

A trickling filter is designed to remove

Settleable solids

Colloidal solids

Dissolved organic matter

None of the above

Solution:

What is the average time required by water to pass through the settling tank called?

Detention time

Time of flow

Mean time

Detention time

Solution:

Which of the following is not a pre-treatment unit?

Nutrient removal tank

Bar-screen

Grit chamber

Flow equalization and proportioning tank

Solution:

Under the Occupational Safety and Health (OSH) Act, employers are responsible for providing a __________ workplace

Estimation

Insurance

Land

Safe

Solution:

In which type of cities are combined sewer systems used?

High-density residential cities

Low-population cities

High-population cities

Cities with high storm runoff

Solution:

1 TCU (True Colour Unit) is equivalent to the colour produced by

1 mg/L of chloroplatinate ion

1 mg/L of platinum ion

1 mg/L of platinum in the form of chloroplatinate ion

1 mg/L of organic chloroplatinate ion

Solution:

Which of the following statements about hard water is incorrect?

It causes more consumption of soap in laundry work

It causes difficulties in the manufacturing process

It increases the taste of food

It causes the formation of scales on the boilers

Water-and-waste-water Questions Set 19:

Which of the following pairs is/are correctly matched?

Solution:

Which instrument is used for measuring the color of water?

Solution:

What is the recommended threshold odour number for public water supply?

Solution:

A trickling filter is designed to remove

Solution:

What is the average time required by water to pass through the settling tank called?

Solution:

Which of the following is not a pre-treatment unit?

Solution:

Under the Occupational Safety and Health (OSH) Act, employers are responsible for providing a __________ workplace

Solution:

In which type of cities are combined sewer systems used?

Solution:

1 TCU (True Colour Unit) is equivalent to the colour produced by

Solution:

Which of the following statements about hard water is incorrect?

Solution:

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