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ECAT Chemistry Chapter 27 Environmental Chemistry Online Test
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 27 Environmental Chemistry Online Test
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Question # 1
Swage water is purified by
Question # 2
Result of ozone hole is
Question # 3
NO and NO2gases in atmosphere are represented by
Question # 4
Which of the following forms a toxic substance in blood by combing with hemoglobin?
Question # 5
A single chlorine free radical can destroy how many ozone molecules
Question # 6
Which one is the most toxic?
Question # 7
Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
Question # 8
The largest item which is recycled is
Question # 9
Which of the following human activities are contaminating surface and ground waters
Question # 10
Which of the following waste material is not recycled for use again
Question # 11
Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
Question # 12
Acid rains are produced by
Question # 13
Domestic waste mostly constitutes
Question # 14
Which of the following is not an air
Question # 15
Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
Question # 16
One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
Question # 17
The pH of the rain water in areas where acid rain is the cause of pollution may be
Question # 18
Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
Question # 19
Which gasses are produced from landfills
Question # 20
Which one is not a pollutant normally?
Question # 21
Minamata disease is due to pollution of
Question # 22
UV radiations bring about
Question # 23
CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
Question # 24
BOD is
Question # 25
Classical smog occurs in palces of
Question # 26
Ecology is a science of environment and deals specially with
Question # 27
The pH range of the acid rain is
Question # 28
Eutrophication causes reduction in
Question # 29
A pollutant affects
Question # 30
The normal amount of overhead ozone is about
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Biology Chapter 1 MCQ - PDF
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Download PDF with answers to study online or offline. The PDF cotnains all MCQ questions with answers for Class 10 Biology Chapter 1 - Acids and Liquids. Total questions are 12.
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