Water Pollution

Q.

Eutrophication indicates that water source is pollution free.

1. True
2. False

Q.

How does waste accumulation affect the environment?

Q.

How are industries polluting our water resources?

Q. Which of the following causes water pollution?

1. Chemicals
2. Bathing animals
3. Plastic bottles
4. All of the above.

Q. What does ORS stand for?

1. Oral Repumping Solution
2. Oral Roast Solution
3. Oral Rehydration Solution
4. Oral Repair Solution

Q.

Which one of the following is not responsible for water shortage?

1. The rapid growth of industries

2. Increasing population

3. Heavy rainfall

4. Mismanagement of water resources

Q. Bathing animals in ponds and lakes causes

1. excessive rainfall
2. groundwater scarcity
3. water pollution
4. All of the above.

Q.

Why should we always drink Boiled water?

Q. In making the $\text{ORS}$ solution, how many spoons of sugar and salt are added to $4$ cups of boiled and cooled drinking water?

1. $6$ and $0.5$
2. $0.5$ and $6$
3. $4$ and $0$
4. $2.5$ and $2.5$

Q. Which of the following dissolves in water?

1. Sugar
2. Oil
3. Plastic
4. All of the above.

Q.

What do you mean by Blue baby syndrome? Describe its source, symptoms, and harmful aspects.

Q. Which of the following were built across the rivers to store water?

1. Tanks
2. Bunds
3. Wells
4. Houd

Q.

8. Pucca drains from the roadside allow water to go into the ground.

1. True
2. False

Q. can be consumed during diarrhoea.

1. Soda drink
2. Burger
3. Coconut water
4. Samosa

Q. Which of the following components do not act as a pollutant in water bodies?

1. Oxygen
2. Oil
3. Water bottles
4. Industrial wastes

Q. Polluted water is unfit for which of the following activities?

Note: You can choose more than one correct activity.

1. Drinking
2. Bathing
3. Swimming
4. Washing utensils

Q. Match the following places with the their respective water sources.

1. Taps
2. Water tankers
3. Ponds/Rivers

Q.

Name any three oxygen demanding biological pollutants of water?

Q.

Why should you not drink fresh water directly from the tap?

1. It is salty

2. It contains microbes

3. It is not tasty

4. It is hard

Q. Sewage water from our houses should be disposed off directly into the rivers.

1. True
2. False

Q. Only _____ percent of water on earth is freshwater.

1. 1
2. 2
3. 3
4. 4

Q. In making the $\text{ORS}$ solution, how many spoons of sugar is added to $4$ cups of boiled and cooled drinking water?

1. 6

Q. The device given in the image is a .

1. boiler
2. microscope
3. purifier

Q. Mixing of which of the following will not pollute the river water?

1. Rain water
2. Household waste
3. Chemicals
4. Industrial waste

Q. Which of the following should not be consumed when suffering from diarrhoea?

1. Burger
2. Coconut water
3. (a) and (c) above.
4. Packaged drink

Q. Less rainfall for a long period of time leads to water ____.

1. supply
2. pollution
3. scarcity
4. surplus

Q. Kiran lives near a lake. However, her family sources water from outside for their needs, as the water from the lake is unusable. Explain why the lake water is unusable.

Q. Identify the practices which can pollute the river Ganga.

Note: This question has more than one answer.

1. Taking bath on river banks
2. Throwing garbage
3. Washing clothes on river banks
4. Disposing untreated sewage

Q. Which of the following acts as a pollutant in oceans?

1. Aquatic animals
2. Oil
3. Vegetable peels
4. Detergent

Q. Tap water is boiled to the germs.

1. increase
2. kill
3. freeze