Pollution Causes MCQs Quiz Online PDF Download

Learn pollution causes MCQs, O level biology test for online courses learning and test prep to practice. Effects of human activity on ecosystem quiz has multiple choice questions (MCQ), pollution causes quiz questions and answers to learn for online science biology scope course test.

IGCSE biology practice test MCQ on non-toxic, unreactive chemicals used as cooling agents in refrigerators are called as with options chloroflouridocarbonates, chloroflamocarbides, chloroflourocarbonates and chlorofluorocarbon problem solving skills for viva, competitive exam prep, interview questions with answer key. Free study guide is for online learning pollution causes quiz with MCQs to practice test questions with answers.

MCQs on Pollution Causes Quiz PDF Download

MCQ. Non-toxic, unreactive chemicals used as cooling agents in refrigerators are called as

  1. Chloroflouridocarbonates
  2. chloroflamocarbides
  3. chloroflourocarbonates
  4. chlorofluorocarbon


MCQ. Risks of skin cancer is increased if

  1. more sun bathing is done
  2. the CFCs are lowered
  3. the greenhouse effect is lowered
  4. more ultraviolet light penetrates the Earth


MCQ. Upon entering through stomata, leaves get damaged and plant dies. This pollutant is

  1. carbon dioxide
  2. lead
  3. carbon monoxide
  4. sulphur dioxide


MCQ. Volcanic eruptions, biological decay and forest fires release

  1. Carbon monoxide in air
  2. carbon dioxide in air
  3. sulpher dioxide in air
  4. ammonia in air


MCQ. Increased melting of ice glaciers may be a result of

  1. greenhouse effect
  2. smog formation
  3. sun getting closer to the Earth every year
  4. moon moving away causing more tidal activities