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Heavy Metals MCQs for Competitive Exams

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Heavy Metals MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

36 MCQs Page 3

Topic Notes: Heavy Metals

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Heavy Metals MCQs in Environmental Science are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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21
In marine environments, mercury forms complexes with organic molecules such as cysteine residues and which other compound?
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22
In which of the following materials is the chemical element cadmium commonly utilized?
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23
Which of the following is a well-known toxic substance frequently found in industrial effluents?
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24
What is the chemical composition of the mineral cinnabar, which serves as the primary ore for mercury?
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25
What are the primary health consequences of lead exposure on the human nervous system?
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26
Which of the following elements is categorized alongside silver, manganese, copper, and gold as a precious or valuable metal?
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27
Under anaerobic conditions, in what chemical form is mercury typically found alongside its metallic state?
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28
Which heavy metal is commonly associated with the application of phosphate fertilizers?
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29
Approximately 85% of global cadmium production is utilized in the manufacturing of which type of rechargeable battery?
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30
In which country were mercury-based fever thermometers officially banned for medical use?
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