Everyday Science · Atoms, Elements & Compounds · page 12 of 15
Some Important Elements MCQs with Answers
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Practice these MCQs in the appSome Important Elements MCQs (111–120)
10 MCQs with answers and a short one-liner. Hide answers to test yourself.
Past paper MCQs in this chapter · See all past papers
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- 111.
Valency of Aluminium is ?
- 112.
Which radioactive element is an important nuclear fuel?
- 113.
Past Paper MCQ
The lightest element is:
- 114.
The isotope C-12 is present in abundance of _?
- 115.
What percentage of Carbon is present as dry body weight in organisms?
- 116.
Which isotope of hydrogen is radioactive?
- 117.
What is the chemical formula for oxygen?
- 118.
Which of the following is not an element of the 3rd period of the periodic table? Sodium, Magnesium, Oxygen, Aluminum
- 119.
Which of the following elements has the highest electron affinity?
- 120.
Which category of elements exists on the periodic table in addition to metals and nonmetals?