Potable Water

Q.

Explain water purification system in water works.

Q.

What are the three advantages of hard water?

Q.

Water that is fit for drinking is called ___ .

1. Portable water.

2. Pourable water.

3. Potable water.

4. Ground water.

Q.

What are the types of filteration?

Q.

The wastewater from kitchens and bathrooms is called blackwater.

1. True
2. False

Q.

What Are The five Water Treatment Stages?

Q.

What do you mean by potable water?

Q.

Cleaning of water is the process of removing ____________.

Q.

Water which is suitable for _________ is called ________ water. (washing, bathing, drinking, potable, soft).

Q.

Water which is suitable for drinking is called soft water State true or false. Correct if wrong statement.

1. True
2. False

Q. Why is mineral water better than distilled water for drinking?

1. Mineral water is cheap.
2. Mineral water is easily available.
3. Mineral water contains dissolved salts.
4. Mineral water is colourful.

Q.

The average depth of the water table in a particular city is found to be 200 m. What should be the depth of the borewell in order to fetch ground water?

1. Less than 200m

2. Greater than 200m

3. Does not depend on the depth of water table

4. Can’t be said

Q.

In which type of water treatment is the biological process carried out?

1. Primary treatment

2. Secondary treatment

3. Tertiary treatment

4. None of the above

Q. Distilled water is fit for drinking.

1. True
2. False

Q. Which of the following is one of the causes of wastage of water?

1. Taking long showers
2. Switching off the taps
3. Not playing with water
4. Taking small showers

Q.

Filtered water may still have ______ in it.

1. Salts

2. Germs

3. Glucose

4. All of these

Q.

Water which looks clean still has disease carrying ________ and ________ impurities. (insects, microorganism, particles, dissolved, harmful).

Q.

How is chemically pure water obtained from the water we use for cooking and drinking?

Q.

The water purification methods are:

1. household filtration

2. chlorination

3. boiling water

4. all of these

Q. How does water pollution affect the amount of clean water available for our use ?

Q. Sterilisation is the process of removal of germs from the water.

1. False
2. True

Q. Seawater can be made potable by heating it.

1. False
2. True

Q.

Define portable water.

Q. Drinking water should be:

1. Free from harmful micro-organisms
2. All of these
3. Colourless and odourless
4. Transparent

Q. Make a tabular table on water borne disease with symptoms and prevention

Q.

Potable water is:

1. Water used for drinking
2. Water free from germs
3. Water free from visible impurities
4. Water not suitable for drinking

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What are the three methods of removing germs from natural water? Explain.

Q.

_______________ is the process of sterilization of water by addition of chlorine acts as a treatment against bacterial infection.

Q.

Water which is suitable for drinking is called soft water. State true or false. Correct if wrong statement.

1. True
2. False

Q.

23. (e) Name one simple way by which this water (muddy water) can be made safe for drinking.