Which of the following statements is correct about Germanium?

C. Germanium is a semiconductor.

Everyday Science · Atoms, Elements & Compounds · page 4 of 15

Some Important Elements MCQs with Answers

Includes 16 past paper MCQs (marked).

Timed quizzes, instant results, track your progress — free

Practice these MCQs in the app

All Everyday Science chapters

Some Important Elements MCQs (31–40)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

Answers and one-liners are hidden. Tap an option to check that question, or show all.

31.
The element having valence shell electronic configuration 3s² 3p⁵ belongs to _?
Correct Answer: A. 3rd period, VIIA group
One-liner
The element with valence shell electronic configuration 3s² 3p⁵ belongs to the 3rd period, VIIA group (halogen family), and is specifically chlorine (Cl).
32.
Ozone is a derivative of _?
Correct Answer: D. Oxygen
One-liner
Ozone is a derivative of oxygen, formed when three oxygen atoms bond together (O₃).
33.
Which of the following do not have variable valency?
Correct Answer: C. Zinc
One-liner
Zinc does not have variable valency; it exhibits a fixed valency of 2.
34.
Silicon is an example of ?
Correct Answer: B. Semiconductor
One-liner
Silicon is an example of a semiconductor.
35.
Past Paper MCQ
Which basic unit is used in fabrication of bodies and transistors?
Correct Answer: A. Silicon
One-liner
Silicon is the basic unit used in the fabrication of bodies and transistors.
36.
What is the atomic number of neon?
Correct Answer: B. 10
One-liner
The atomic number of neon is 10.
37.
Which of the following statements is correct about Germanium?
Correct Answer: C. Germanium is a semiconductor.
One-liner
Germanium is a semiconductor element widely used in transistors and electronic devices.
38.
Which one of the following has unchanged valency?
Correct Answer: C. Na
One-liner
Na (Sodium) has an unchanged valency of +1 because it belongs to Group 1 (alkali metals) and always loses one electron.
39.
What is the symbol of Iron?
Correct Answer: C. Fe
One-liner
The chemical symbol of Iron is Fe, derived from its Latin name "Ferrum."
40.
Which isotope is used to identify efficiency rates of organic and inorganic fertilizers?
Correct Answer: D. Nitrogen-15
One-liner
Nitrogen-15 is the stable isotope used as a tracer to identify the efficiency rates of organic and inorganic fertilizers.

Previous chapter: Non-metal Elements Next chapter: Compounds

Some Important Elements MCQs with Answers

Some Important Elements MCQs (31–40)

Subjects

Exams

Platform

Legal