MDCAT Chemistry Chapter 21 online mcq test with answers for chapter 21 (Environmental Chemistry)

Chapter 21 is an important part of MDCAT Chemistry that covers polymers and biological macromolecules. It includes the formation and uses of addition polymers like polyethene, polystyrene, and polyvinyl chloride (PVC), as well as condensation polymers such as polyesters (terylene) and polyamides (nylon-6,6). Understanding these topics helps students grasp how small molecules combine to form large, useful materials found in everyday life.

This chapter also explains the structure of proteins , including their primary and secondary structures , and the structure and function of nucleic acids (DNA) , which carry genetic information. By attempting the MDCAT Chemistry Chapter 21 MCQ Test with Answers , students can review key concepts, check their understanding, and strengthen their preparation for the exam.

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.#

Question

Answer

Which gas produces air pollution?

A. oxides of sulphur

B. oxides of carbon

C. all of these

Ozone gas has boiling point:

A. Low

B. High

C. Medium

D. Highest

Chemical equilibrium involving reactants and products in more than one phase is called:

A. Homogeneous

B. Heterogeneous

C. Dynamic

D. Static

Materials suspended in water or present as colloidal form in raw water are removed by:

A. aeration

B. coagulation

C. chlorination

D. treatment

Which of the following is not a heavy industry?

A. Iron

B. Fertilize

C. Paper

D. None

Lithosphere extends upto kilometer of earth crust in depth:

A. 10 km

B. 100 km

C. 1000 km

D. 10000 km

Which is unnecessary for purification of water for drinking purposes

A. Coagulation

B. Aeration

C. Treatment with Iodine

D. Treatment with chlorine

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

A. Live stock wastes

B. Oil spilage

C. detergents

D. pesticides

Volcanoes produce SO₂:

A. 47%

B. 57%

C. 67%

D. 77%

How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil

A. by using water spray

B. by blowing air

C. by treating with EDTA and then flushing the heavy metal complex out of the soil

D. by adding CaO

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MDCAT Chemistry Chapter 21 MCQ Test With Answer for (Environmental Chemistry)

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Elevated concentration of ______________ is harmful for fish as it clog the gills causing suffocation

Primary pollutants are:

Which is not a component of environment?

Increased awareness of environmental issues has led chemists to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn. Which one is not the guiding principle

Ecosystem is a smaller unity of

A single chlorine free radical can destory how many ozone molecules

SO2makes ___________ acid rains

SO2 produced by volcanoes is about

Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases

Water is made disinfectant during purification of water to the step:

A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:

The eleventh concentration of metal cause clogs of gills in fish:

Agriculture consumes part of fresh water:

What change in plants indicates toxic effect of SO2

Electropositive character increases down the groups due to:

Fungicides are the pesticides which

Amount of ozone in atmosphere is expressed in units:

Which of the following is a macronutrient?

Detergent greatly effects the

Polycyclic aromatic hydrocarbons are taught to be

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Set 17

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MCAT Chemistry Chapter 21 Important MCQ's

Test Questions

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SO₂makes ___________ acid rains

SO₂produced by volcanoes is about

What change in plants indicates toxic effect of SO₂