Which one of the following diseases occurs due to water pollution?
- ACholera
- BTyphoid
- CJaundice
- ✓All the above
Answer: D.
View full solution →Question types
Pollution of Air and Water question types
352 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
352
Questions
8
Question groups
5
Question types
01
M.C.Q. [I MARKS]
217 Q→02differences [2marks]
2 Q→03questions in short. [2 marks ]
37 Q→04scientific reasons[2 marks ]
8 Q→05questions in short. [3 marks ]
33 Q→06questions in details [4 marks ]
21 Q→07questions in on sentence. [1 M]
30 Q→08case /data -based (4 Marks)
4 Q→Sample Questions
Pollution of Air and Water questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Water fit for drinking is known as:
- ✓Potable water
- Bsimple water
- COrganic water
- DBlue water
Answer: A.
View full solution →Which one of the following is a source of water pollution?
- AAgricultural waste
- BDomestic waste
- CIndustrial waste
- ✓All of these
Answer: D.
View full solution →Supriya is writing some statements, choose the correct statement and help her:
- AThe air pollution from motor vehicles can be reduced by using cng.
- BWe should use bicycle for covering short distances.
- CWe should use limited fertilizers in agriculture purposes.
- ✓All the above.
Answer: D.
View full solution →Air pollution causes
- AGlobal warming
- ✓Respiratory problems
- CSoil erosion
- DNone of these
Answer: B.
View full solution →Give points of differences : Pure air and Polluted air.
Give points of differences : $CNG$ and $CFC$s
View full solution →What is 'greenhouse effect'? State its importance for us.
What are the greenhouse gases?
The farmers use large amounts of a substance $P$ in the fields to increase the crop yield. The excess of $P$ dissolves in water and runs into a lake. The substance $P$ causes rapid growth of tiny green water plants $Q$ in the lake which cover the whole lake like a green sheet. When the plants $Q$ die, the organisms called $R$ decompose them by utilizing $S$ dissolved in lake water. The amount of dissolved Sin water decreases too much due to which the fish living in lake suffocate and die. What are $P, Q, R$ and $S?$
View full solution →$UV$ rays are harmful to us. How$?$
View full solution →Combustion of fossil fuels generates a lot of air pollution. Can you suggest any two alternative sources of energy which do not cause any pollution?
Why does the increased level of nutrients in the water affect the survival of aquatic organisms ?
We should prevent pollution of the rivers.
Dry wastes of plants should be burried in a compost pit rather than burning.
Respiratory problems increase during Diwali festivals. OR Say no to crackers.
Global warming is a serious global threat.
Explain the differences between pure air and polluted air.
Clear, transparent water is always fit for drinking. Comment.
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
If we drink polluted water, what is likely to happen?
State one way in which the air pollution caused by the burning of fossil fuels in transport and industry can kill the fish living in a lake and one way in which the water pollution caused by an agricultural activity can kill fish living in the same lake.
Prepare a brief speech on global warming. You have to deliver the speech in your class.
Explain circumstances leading to acid rain. How does acid rain affect us?
You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.
At an individual level, how can you help reduce air pollution?
What are the different ways in which water gets contaminated?
Which of the following is not a greenhouse gas?
- ACarbon dioxide
- BSulphur dioxide
- CMethane
- ✓Nitrogen
Answer: D.
View full solution →Which gas in the upper atmosphere prevents ultraviolet radiations of the sun from reaching the earth?
In the following statements, the underlined words are jumbled up. Write them in their correct form.
Whenever harmful substances such as wagese, toxic chemicals, silt, etc get mixed with water, the water becomes potdulle.
Whenever harmful substances such as wagese, toxic chemicals, silt, etc get mixed with water, the water becomes potdulle.
Name any two diseases caused by drinking polluted water containing sewage.
Name any two water pollutants which are toxic for both plants and animals.
The graph shows the Air Quality Index $(AQI)$ of four different cities.
$8.$ Which city’s air is the most polluted? Explain your answer.
$9.$ The air of only City $1$ and City $3$ are safe for breathing.
What is the AQI limit for safe breathing$?$
$A.$ Less than $50$
$B.$ In between $50$ and $100$
$C.$ In between $100$ and $150$
$D.$ In between $150$ and $200$
$10.$ Which of these steps can help reduce air pollution?
Circle ‘Yes’ or ‘No’ for the correct response.
View full solution →$8.$ Which city’s air is the most polluted? Explain your answer.
$9.$ The air of only City $1$ and City $3$ are safe for breathing.
What is the AQI limit for safe breathing$?$
$A.$ Less than $50$
$B.$ In between $50$ and $100$
$C.$ In between $100$ and $150$
$D.$ In between $150$ and $200$
$10.$ Which of these steps can help reduce air pollution?
Circle ‘Yes’ or ‘No’ for the correct response.
| Can this reduce air pollution? | Yes or No |
| Planting a large number of trees | Yes/No |
| Using biofuel as an energy source | Yes/No |
| Burning of agricultural wastes | Yes/No |
The table shows the properties of four water samples.
$6$. Which water sample is likely to be least polluted$?$
$A.$ Sample $1$
$B.$ Sample $2$
$C$. Sample $ 3$
$D$. Sample $4$
$7.$ In which water source will the survival of aquatic animals be the most dificult$?$
$A.$ Source of Sample $1$
$B.$ Source of Sample $2$
$C.$ Source of Sample $3$
$D.$ Source of Sample $4$
View full solution →| Water Sample | Smell | Colour |
| Sample $1$ | No smell | Slightly muddy |
| Sample $2$ | Strong bad smell | Muddy and greenish |
| Sample $3$ | Very light smell | Colourless |
| Sample $4$ | No smell | Colourless |
$A.$ Sample $1$
$B.$ Sample $2$
$C$. Sample $ 3$
$D$. Sample $4$
$7.$ In which water source will the survival of aquatic animals be the most dificult$?$
$A.$ Source of Sample $1$
$B.$ Source of Sample $2$
$C.$ Source of Sample $3$
$D.$ Source of Sample $4$
Rakesh pours some polluted water on a ilter paper.
He collects the iltered water in a conical flask.
$4.$ Is the iltered water suitable for drinking$?$ Explain your answer.
$5.$ Which of these is true about greenhouse gases$?$
Circle ‘Yes’ or ‘No’ for the correct response.
View full solution →He collects the iltered water in a conical flask.
$4.$ Is the iltered water suitable for drinking$?$ Explain your answer.
$5.$ Which of these is true about greenhouse gases$?$
Circle ‘Yes’ or ‘No’ for the correct response.
| Is this true about greenhouse gases$?$ | Yes or No |
| Deforestation leads to an increase in greenhouse gases in the air. | Yes/No |
| Nitrogen dioxide $(NO_2)$ is a greenhouse gas. | Yes/No |
| Excess of greenhouse gases in the air causes global warming. | Yes/No |
Seema ills four similar ish tanks with freshwater from different sources.
She puts six freshwater ish in each tank.
The table shows her indings after two days.
$1.$ Which tank is likely to have been illed with the most polluted water$?$
$A.$ Tank $1$
$B.$ Tank $2$
$C.$ Tank $3$
$D.$ Tank $4$
$2.$ Seema repeats the activity by putting only one ish in each tank.
Can she rely on the results this time$?$ Explain your answer.
$3.$ Which of these activities causes water pollution?
$A.$ Rowing on a river
$B.$ Swimming on a river
$C.$ Fishing in a river with nets
$D.$ Dumping of sewage in river
View full solution →She puts six freshwater ish in each tank.
The table shows her indings after two days.
| Tank | Findings |
| Tank $1$ | All fish are dead. |
| Tank $2$ | $1$ fish is dead, and $5$ fish are alive |
| Tank $3$ | All fish are alive. |
| Tank $4$ | $2$ fish are dead, and $4$ fish are alive |
$A.$ Tank $1$
$B.$ Tank $2$
$C.$ Tank $3$
$D.$ Tank $4$
$2.$ Seema repeats the activity by putting only one ish in each tank.
Can she rely on the results this time$?$ Explain your answer.
$3.$ Which of these activities causes water pollution?
$A.$ Rowing on a river
$B.$ Swimming on a river
$C.$ Fishing in a river with nets
$D.$ Dumping of sewage in river
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