Which one of the following toxic metals is extensively present in newspaper?
Correct answer: C. Pb
- A. Mg
- B. Cd
- C. Pb
- D. Hg
Explanation
Lead, symbol Pb, was historically used in printing inks and could therefore be present in newspapers. Students may choose mercury because it is a well-known toxic metal, but mercury was not the characteristic metal associated with newspaper printing ink.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Biotechnology and Health Care
Biotechnology applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.
Practise Biotechnology
731 free Biotechnology MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Biotechnology and Health Care questions
Who is commonly known as "the Father of Microbiology"?
Apiculture means:____________?
'Mastectomy' is mainly associated with which of these diseases?
Cats mostly show which type of Diabetes Mellitus?
Dogs mostly show which type of Diabetes Mellitus:
The method of reproduction of new plants by cells instead of seed is known is:___________?