Some Important Elements MCQs with Answers

Helium is the second most abundant element in the universe. It is a member of which family?

• A.Alkali metals
• B.Halogens
• C.Noble gases
• D.Alkaline earth metals

The electronic configuration 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d⁷ depicts an atom of the element?

• A.Fe (Iron)
• B.Co (Cobalt)
• C.Ni (Nickel)
• D.Mn (Manganese)

What is the molecular mass of nitrogen gas (N₂) if 11.2 dm³ of gas at STP equals 1 mole?

• A.14 g
• B.44 g
• C.32 g
• D.28 g

An artificial radioactive element can be made by bombarding ?

• A.High energy particles on stable elements
• B.Low energy electrons on radioactive elements
• C.Neutrons on water molecules
• D.Gamma rays on inert gases

f-block elements are also called ?

• A.Transition elements
• B.Rare earth elements
• C.Inner transition elements
• D.Alkaline earth metals

Freezing point of mercury is?

• A.-39°C
• B.0°C
• C.-114°C
• D.-78°C

Family B elements are commonly called as _?

• A.Transitional elements
• B.Alkali metals
• C.Halogens
• D.Noble gases

Which of the following is an example of a semiconductor?

• A.Copper
• B.Iron
• C.Silver
• D.Germanium

Past Paper MCQ

Name the element which is used to fabricate solar cells and transistors?

• A.Germanium
• B.Copper
• C.Gallium
• D.Silicon

Chemical symbol of Mercury is ?

• A.Mg
• B.Hg
• C.Mr
• D.Me