Everyday Science · Atoms, Elements & Compounds · page 11 of 15
Some Important Elements MCQs with Answers
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Practice these MCQs in the appSome Important Elements MCQs (101–110)
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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- 101.
Which element has the smallest electronegativity?
- 102.
Past Paper MCQ
The most abundant element in the universe is called?
- 103.
An isotope of uranium employed as fuel in ?
- 104.
Which element is used extensively as a semiconductor in solid-state devices?
- 105.
The most common isotope of each of the following elements is radioactive EXCEPT:
- 106.
Diamonds are made up of _?
- 107.
The symbol of sodium is ?
- 108.
Silicon is found in nature in the form of _?
- 109.
When iron (Fe³⁺) which is yellow-brown in colour is reduced by an electron, it forms iron (Fe²⁺). The colour of Fe²⁺ is ?
- 110.
What is the Atomic number of Potassium?