TN Online TestSamacheer Kalvi practice

12th Standard Zoology — Environmental Issues: Book Back Online Practice Test

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 9 questions available.

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Right to Clean Water is a fundamental right, under the Indian Constitution

A.Article 12 B.Article 21 C.Article 31 D.Article 41

The 'thickness' of Stratospheric Ozone layer is measured in/on:

A.Sieverts units B.Dobson units C.Melson units D.Beaufort Scale

As per 2017 statistics, the highest per capita emitter of Carbon dioxide in the world is

A.USA B.China C.Qatar D.Saudi Arabia

The use of microorganism metabolism to remove pollutants such as oil spills in the water bodies is known as

A.Biomagnification B.Bioremediation C.Biomethanation D.Bioreduction

Which among the following always decreases in a Food chain across tropic levels?

A.Number B.Accumulated chemicals C.Energy D.Force

In the E-waste generated by the Mobile Phones, which among the following metal is most abundant?

A.Copper B.Silver C.Palladium D.Gold

___________ is/are an ideal disinfectant for waste water.

A.U-V Rays B.Chlorination C.Boiling D.Ozonisation

SMOG is derived from :

A.Smoke B.Fog C.Both A and B D.Only A

Excess of fluoride in drinking water causes:

A.Lung disease B.Intestinal infection C.Fluorosis D.None of the above

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Book Back Questions9 textbook MCQs · solved Additional MCQs15 extra MCQs · solved Practice TestInteractive · instant score Additional MCQ TestTest yourself on the extra set

About this Environmental Issues test

This free online practice test covers Environmental Issues from the 12th Standard Zoology (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Zoology

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1 Reproduction in Organisms 2 Human Reproduction 3 Reproductive Health 4 Principles of Inheritance and Variation 5 Molecular Genetics 6 Evolution 7 Human Health and Diseases 8 Immunology 9 Microbes in Human Welfare 10 Applications of Biotechnology 11 Organisms and Populations 12 Biodiversity and its Conservation