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Chemistry

Chemistry · Quick practice · answer shown after each question

Environmental chemistry: air, water and soil pollution

Question 1 of 10

Question 1 of 10

Eutrophication is caused by

Question 2 of 10

Question 2 of 10

The main greenhouse gas from burning fossil fuels is

Question 3 of 10

Question 3 of 10

The poisonous gas that combines with haemoglobin and is produced by incomplete combustion is carbon ___.

Question 4 of 10

Question 4 of 10

Rain with a pH below 5.6 caused by pollutants is called ___ rain.

Question 5 of 10

Question 5 of 10

The ozone layer protects the Earth from

Question 6 of 10

Question 6 of 10

Biochemical oxygen demand (BOD) measures

Question 7 of 10

Question 7 of 10

The device fitted to car exhausts to reduce pollutants is a catalytic ___.

Question 8 of 10

Question 8 of 10

Sewage in rivers mainly causes

Question 9 of 10

Question 9 of 10

The excessive growth of algae due to fertiliser run-off is called ___.

Question 10 of 10

Question 10 of 10

Global warming may lead to

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.