Environmental Science and Ecology - Mock Test 23

Question 221

Which of the following pollutions forms Heat island?

A) Water B) Air C) Land D) None of these

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Question 222

Greenhouse effect is caused by ?

A) Green plants B) Infrared rays C) UV rays D) X-rays

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Question 223

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by ?

A) The Vienna Convention B) Rio de Janeiro Conference C) The Montreal Protocol D) The Koyoto Protocol

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Question 224

Gas leaked during Bhopal tragedy was ?

A) Ethyl isothiocyanate B) Sodium isothiocyanate C) Potassium isothiocyanate D) Methyl isocyanate

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Question 225

Fluoride pollution mainly affects ?

A) Brain B) Teeth C) Heart D) Kidney

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Question 226

Fish die in water polluted by sewage due to ?

A) Pathogens B) Reduction in O2 C) Clogging of gills by silt D) Foul smell

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Question 227

Eutrophication is often seen in ?

A) Mountains B) Deserts C) Fresh water lakes D) Ocean

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Question 228

Escherichia coli used as an indicator organism to determine pollution of water with ?

A) Industrial effluents B) Heavy metals C) Pollen of aquatic plants D) Faecal matter

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Question 229

Eutrophication causes decrease in ?

A) Dissolved hydrogen B) Dissolved salts C) Dissolved oxygen D) All of these

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Question 230

Decomposition of domestic wastes under natural processes is called ?

A) Industrial pollution B) Thermal pollution C) Biodegradable pollution D) Nonbiodegradable pollution

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