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Self-study · 60 questions · 8 units · Free

The exposure is never only the exposure.

Sixty questions in environmental health, each with the working shown. Not to be memorised — to be argued with until the reasoning is yours.

Written for students of public health and epidemiology by Yahya M. Al-Farsi, Professor of Public Health and Epidemiology, Sultan Qaboos University. The cases are Omani and Gulf: a dust storm over Muscat, a desalination plant, a midday ban on outdoor work, a well that should not have been drunk from.

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0 of 60 answered correctly

Practice by unit

Eight units

Every answer is marked the moment you choose it, with the reasoning shown. Quantitative items — the AQI ratio, heat-attributable deaths, an outbreak's relative risk — show their working.

Test yourself

Three sets

Twenty questions, twenty minutes, no feedback until the end. Then review every answer with the working.