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Class 9 Exam  >  Class 9 Tests  >  Environmental Chemistry - Practice Test (1) - Class 9 MCQ

Environmental Chemistry - Practice Test (1) - Class 9 MCQ


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25 Questions MCQ Test - Environmental Chemistry - Practice Test (1)

Environmental Chemistry - Practice Test (1) for Class 9 2024 is part of Class 9 preparation. The Environmental Chemistry - Practice Test (1) questions and answers have been prepared according to the Class 9 exam syllabus.The Environmental Chemistry - Practice Test (1) MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Environmental Chemistry - Practice Test (1) below.
Solutions of Environmental Chemistry - Practice Test (1) questions in English are available as part of our course for Class 9 & Environmental Chemistry - Practice Test (1) solutions in Hindi for Class 9 course. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free. Attempt Environmental Chemistry - Practice Test (1) | 25 questions in 50 minutes | Mock test for Class 9 preparation | Free important questions MCQ to study for Class 9 Exam | Download free PDF with solutions
Environmental Chemistry - Practice Test (1) - Question 1
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Chemical species present in the environment are either naturally occurring or generated by human activities. Their interrelation with the surroundings is called:

Detailed Solution for Environmental Chemistry - Practice Test (1) - Question 1

environmental chemistry basically deals with the interrelationship between chemical species generated by human activities or naturally.

Environmental Chemistry - Practice Test (1) - Question 2
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In cold places, vegetables, fruits and flowers are grown in glass covered areas called green houses. This is because of one or more of the following. Choose the most appropriate.

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In cold places, vegetables, fruits and flowers are grown in glass covered areas as they maintains the temperature as well as traps the solar energy.

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Environmental Chemistry - Practice Test (1) - Question 3
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Which of these reactions in the atmosphere leads to acid rain?

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Sulphur dioxide + water → sulphuric acid This is the major reaction of acid rain.

Environmental Chemistry - Practice Test (1) - Question 4
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The ozone layer found high in the stratosphere:
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The ozone layer found high in the stratosphere Protects against the suns harmful UV rays

Environmental Chemistry - Practice Test (1) - Question 5
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Rotting garbage dumps and by fossil fuels or when vegetation is burnt, paddy fields, coal mines, large amounts of one of the following gases are released.
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All these releases methane.

Environmental Chemistry - Practice Test (1) - Question 6
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Effect of undesirable changes in the surrounding that have harmful effects on plants, animals and human beings is termed as
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environmental pollution is undesirable change that provide harmful effect to the living things.

Environmental Chemistry - Practice Test (1) - Question 7
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Green plants help reduce environmental pollution by
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Green plants help reduce environmental pollution by removing the excess of carbondioxide

Environmental Chemistry - Practice Test (1) - Question 8
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The death of Scandinavian forests was blamed on:
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The death of Scandinavian forests was blamed on Pollution from UK power stations

Environmental Chemistry - Practice Test (1) - Question 9
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Holes in the ozone layer are thought to have been caused by:
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CFC’s causes hole in the ozone layer.

Environmental Chemistry - Practice Test (1) - Question 10
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Avoiding burning of dry leaves and wood will help in reducing
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Avoiding burning of dry leaves and wood will help in reducing global warming

Environmental Chemistry - Practice Test (1) - Question 11
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Dichlorodiphenyltrichloroethane (DDT), plastic materials, heavy metals etc. belong to one of the following options. Choose the most appropriate.
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DDT is nondegradable by natural processes.

Environmental Chemistry - Practice Test (1) - Question 12
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Deforestation and burning of fossil fuel adds to the environmental pollution
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Deforestation and burning of fossil fuel adds to the environmental pollution As it increases the CO2 level and adds to global warming

Environmental Chemistry - Practice Test (1) - Question 13
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Acid rain does not cause:
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Acid rain does not cause Global warming

Environmental Chemistry - Practice Test (1) - Question 14
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Which of the following gases is not a green house gas?
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CO is not a green-house gas?

Environmental Chemistry - Practice Test (1) - Question 15
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Which of the following is a macronutrient?
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Carbon is a macronutrient.

Environmental Chemistry - Practice Test (1) - Question 16
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Some pollutants breakdown by natural processes. Example is
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Vegetables are biodegradable so they breakdown by natural processes.

Environmental Chemistry - Practice Test (1) - Question 17
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One of the following pollutant gases naturally occurs in the environment
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Nitrous oxide naturally occurs in the environment

Environmental Chemistry - Practice Test (1) - Question 18
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Sulphur dioxide levels can be reduced by using:
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Sulphur dioxide levels can be reduced by using Low sulphur fuels

Environmental Chemistry - Practice Test (1) - Question 19
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Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.
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SO2 is not the component of photochemical smog.

Environmental Chemistry - Practice Test (1) - Question 20
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Increase in the global temperature increases the incidence of
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Increase in the global temperature increases the incidence of A. dengue

Environmental Chemistry - Practice Test (1) - Question 21
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Tropospheric and stratospheric pollution are actually components of
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Tropospheric and stratospheric pollution are actually components of atmospheric pollution

Environmental Chemistry - Practice Test (1) - Question 22
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Ozone hole is
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Ozone hole is the depletion of ozone layer in the stratosphere

Environmental Chemistry - Practice Test (1) - Question 23
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Which of these atmospheric pollutants is not released by car exhausts?
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Magnesium oxide is not released by car exhaust.

Environmental Chemistry - Practice Test (1) - Question 24
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Which of the following statements is not true about classical smog?
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Classical smog main components are not produced by the action of sunlight on emissions of automobiles and factories

Environmental Chemistry - Practice Test (1) - Question 25
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The formation of acid rain can be reduced
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The formation of acid rain can be reduced by reducing the emission of sulphur dioxide and nitrogen dioxide in the atmosphere.

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