CBSE Class 8 Science Pollution of Air and Water MCQs
Refer to CBSE Class 8 Science Pollution of Air and Water MCQs provided below available for download in Pdf. The MCQ Questions for Class 8 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 18 Pollution of Air and Water are an important part of exams for Class 8 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 8 Science and also download more latest study material for all subjects
नीचे दिए गए CBSE कक्षा 8 विज्ञान वायु और जल प्रदूषण MCQs देखें जो पीडीएफ में डाउनलोड के लिए उपलब्ध हैं। उत्तर के साथ कक्षा 8 विज्ञान के लिए MCQ प्रश्न CBSE, NCERT और KVS द्वारा सुझाए गए नवीनतम पाठ्यक्रम और परीक्षा पैटर्न के अनुसार संरेखित हैं। अध्याय 18 वायु और जल प्रदूषण के लिए बहुविकल्पीय प्रश्न कक्षा 8 विज्ञान के लिए परीक्षाओं का एक महत्वपूर्ण हिस्सा हैं और यदि ठीक से अभ्यास किया जाए तो आपको अपनी समझ को बेहतर बनाने और उच्च अंक प्राप्त करने में मदद मिल सकती है। CBSE कक्षा 8 विज्ञान के लिए अधिक अध्याय-वार MCQ देखें और सभी विषयों के लिए अधिक नवीनतम अध्ययन सामग्री भी डाउनलोड करें
MCQ for Class 8 Science Chapter 18 Pollution of Air and Water
Class 8 Science students should refer to the following multiple-choice questions with answers for Chapter 18 Pollution of Air and Water in Class 8.
कक्षा 8 विज्ञान के छात्रों को कक्षा 8 के अध्याय 18 वायु और जल का प्रदूषण के लिए निम्नलिखित बहुविकल्पीय प्रश्नों के उत्तर देखने चाहिए।
Chapter 18 Pollution of Air and Water MCQ Questions Class 8 Science with Answers
Chapter 18 POLLUTION OF AIR AND WATER
Question: Chlorofluorocarbon is used in
a) All
b) Refrigerators
c) Air conditioners
d) Perfumes
Answer: A
Question: Pollution of water is responsible for
a) All
b) Oil refineries
c) Paper factories
d) Sugar mills
Answer: A
Question: CNG is a
a) Clean fuel
b) Polluted fuel
c) Harmful fuel
d) None of the options
Answer: A
Question: What causes pollution
a) Human activities
b) Trees
c) Human activities and trees
d) None of the options
Answer: A
Question: The percentage of nitrogen is
a) 0.78
b) 0.21
c) 0.12
d) 0.87
Answer: A
Question: Green House gas is
a) Carbon dioxide
b) Nitrogen
c) Oxygen
d) Methane
Answer: B
Question: Air pollution causes
a) Respiratory problems
b) Global warming
c) Soil erosion
d) None of the options
Answer: A
Question: Most polluted river in the world is
a) Ganga
b) Yamuna
c) Cavery
d) Chenab
Answer: A
Question: The Taj Mahal is being affected by
a) Air pollution
b) Noise pollution
c) Water pollution
d) None of the options
Answer: C
Question: Highest percentage of air consists of
a) Nitrogen
b) Oxygen
c) Carbon dioxide
d) Argon
Answer: A
Question. The reason for greenhouse effect is:
(a) Decrease in quantity of CO2 in atmosphere
(b) Increase in quantity of CO2 in atmosphere
(c) Decrease in quantity of oxygen in atmosphere
(d) Increase in quantity of oxygen in atmosphere
Answer : B
Question. Trapping of unescapable radiations of sun in Earth’s environment is called:
(a) Earth warming
(b) Greenhouse warming
(c) Greenhouse effect
(d) None of these
Answer : C
Question. Which Of The Following Is Not A Way To Conserve Water?
(a) Replace
(b) Reduce
(c) Reuse
(d) Recycle
Answer : A
Question. Heat is reflected from the earth's surface and trapped in the atmosphere. Which phenomena is being referred to?
(a) Global warming
(b) Ozone depletion
(c) Greenhouse effect
(d) Thermal pollution
Answer : C
Question. The following gas is not an air pollutant:
(a) Carbon dioxide
(b) Oxides of nitrogen
(c) Sulphur dioxide
(d) Oxygen
Answer : D
Question. Air pollution causes
(a) Global warming
(b) Respiratory problems
(c) Soil erosion
(d) None of these
Answer : B
Question. Incomplete burning of fuels produces:
(a) Carbon dioxide
(b) Carbon particles
(c) Carbon monoxide
(d) None of these
Answer : C
Question. One Of The Following Does Not Contribute In Producing Acid Rain. This One Is:
(a) Nitrogen dioxide
(b) Nitrogen monoxide
(c) Carbon monoxide
(d) Sulphur dioxide
Answer : C
Question. Most polluted river in the world is:
(a) Yamuna
(b) Cavery
(c) Chenab
(d) Ganga
Answer : D
Question. Most polluted river in the world is:
(a) Yamuna
(b) Cavery
(c) Chenab
(d) Ganga
Answer : D
Question. A poisonous gas emitted by Mathura Refinery and other industries in and around Taj which cause acid rain is:
(a) Carobon monoxide
(b) Methane
(c) Sulphur dioxide
(d) Oxygen
Answer : C
Question. Pollution of water is responsible for
(a) Oil refineries
(b) Paper factories
(c) Sugar mills
(d) All
Answer : D
Question. The water that is purified and fit for drinking is called
(a) Potable water
(b) Pure water
(c) Hard water
(d) Saline water
Answer : A
Question. From which of the following bad effects does the ozone layer in our atmosphere protect us?
(a) Carbon dioxide
(b) CFC's
(c) The sun's ultraviolet rays
(d) All of the above
Answer: C
Question. Identify the gas associated with greenhouse effect.
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen dioxide
(d) Sulphur dioxide
Answer : A
Question. Instead of the fossil fuels for our energy requirements we can use :
(a) Solar energy
(b) Hydropower
(c) Wind energy
(d) All of these
Answer : D
Question. Carbon monoxide in vehicle exhaust causes
a) Increased oxygen carrying capacity of RBCs
b) Reduced Nitrogen carrying capacity of RBCs
c) Reduced oxygen carrying capacity of RBCs
d) Reduced carbon carrying capacity of RBCs
Question. Smog =
a) Smoke in dog’s stomach
b) Smoke + fog
c) Smoke dog
d) frog in fog
Question. The gas used in refrigerating appliance causing serious damage to ozone is
a) MFCs
b) CFCs
c) LPCs
d) DPCs
Question. Acid rain mainly contains
a) Sodium chloride
b) Sulphur di oxide and Nitrogen di oxide
c) Hydrochloric acid
d) Carbon tetra chloride
Question. Marble cancer is caused by
a) bacteria
b) virus
c) Acid rain
d) Alkali rain
Question. Greenhouse effect is
a) Painting house green in colour
b) Wearing green colour dress
c) Having green room in the house
d) Sun’s heat is trapped and not allowed to escape
Question. Greenhouse gases includes
a) CO2, Methane, Nitrous oxide
b) CO2, Argon, Nitrous oxide
c) CO2, Methane, Chlorine
d) CO2, Methane, Flourine
Question. _____ is a commonly used chemical method for purifying water.
a) Brominization
b) Flourination
c) Filtration
d) Chlorination
Question. Ganga Action Plan is associated with
a) Increase of fish culture in the Ganges
b) Reduce Ganga water pollution
c) Construct more bridges over the Ganges
d) Increase water transport on the Ganges
Question. Van Mahotsav is
a) Planting trees in January
b) Cutting trees in January
c) Cutting trees in July
d) Planting trees in July