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Pollution Of Air And Water

SOLVE ALL QUESTIONS.

Jan 19, 7:00 PM

60 minutes

Jan 19, 8:00 PM

100.0 marks

MCQ

50 questions

BABLU SIR

MSc (Physics) & 5 Years of Teaching Experiences in schools & Institutions.

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8th

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Question Text

Question 1 :
State True or False. The Gangotri glacier in the Himalayas has started melting because of global warming.

Question 2 :
The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is ________.

Question 3 :
Which of the following is not a way to conserve water?

Question 4 :
Which method is a commonly used chemical method for purifying water?

Question 5 :
A pond contains clean water. Which of the following activities will produce least pollution of water?

Question 6 :
State True or False. Carbon monoxide is produced by complete burning of fuels such as coal, petrol, diesel.

Question 7 :
State True or False. Pollution is no longer a distant phenomenon. It is affecting the quality of our daily lives.

Question 8 :
State True or False. The sources of air pollutants are factories, power plants, automobile exhausts and burning of firewood and dung cakes.

Question 9 :
While brushing your teeth, leaving the tap running may waste ______

Question 10 :
Can we plant trees and nurture the ones already present in the neighbourhood to save trees and stop pollution?

Question 11 :
State True or False. A brick kiln emits lot of smoke and other harmful gases causing air pollution.

Question 12 :
Carbon monoxide is a poisonous gas. It reduces the _____ carrying capacity of the blood

Question 13 :
Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This gas is______.

Question 18 :
The Ganga at which part in Uttar Pradesh (U.P.), has one of the most polluted stretches of the river?

Question 21 :
State True or False. We can survive for some time without air but we cannot survive even for a few minutes without food.

Question 22 :
Name the chemicals which are used in refrigerators and air conditioners and damage ozone layer when released in air.

Question 23 :
State True or False. Water which is suitable for drinking is called soft water.

Question 25 :
Smoke may contain ______ which combine with other air pollutants and fog to form smog.

Question 26 :
In the following statements, the words in inverted commas are jumbled up. Write them in their correct form.Gangotri glacier in Himalaya has started melting because of 'lablog ringwam'.

Question 28 :
Which refineries are a major source of gaseous pollutants like sulphur dioxide and nitrogen dioxide?

Question 29 :
Choose the sources which cause air pollution due to suspended particulate matter.

Question 30 :
The bacteria present in the faeces of mammals are indicators of

Question 31 :
A lot of oxygen in the water body gets used up. This results in a decrease in the oxygen level which may kill-

Question 32 :
World Wide Fund for Nature (WWF) found that Ganga is one of the ten most _____ rivers in the world.

Question 33 :
This chemical protects our crops and is washed into water bodies from the field-

Question 36 :
Suspended particulate matter, such as the soot particles emitted by _______ refinery, has contributed towards the yellowing of the marble of Taj Mahal.

Question 39 :
River which is famous in India and sustains most of the northern central and eastern Indian population-

Question 40 :
Water is becoming scarce due to increase in which of the following activities?

Question 41 :
Which substance is used in refrigerators, air conditioners and aerosol sprays?

Question 42 :
Lakhs of trees are planted every year in July. This event is called as-

Question 43 :
Which ambitious plan to save the Ganga river was launched in 1985?

Question 44 :
The trapping of radiations by the earth’s atmosphere is similar. That is why it is called the -

Question 47 :
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?

Question 48 :
Gases like methane, nitrous oxide contribute towards rising temperature of earth's atmosphere. What are they called?

Question 49 :
The smog causes breathing difficulties such as _____ , ______and ______ in children.

Question 50 :
When air is contaminated by unwanted substances which have a harmful effect on both the living and the non-living, it is referred to as _____ pollution

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