Question

Materials that can be drawn into wires are called ductile. Which of the following is not ductile material? ​

• A. Silver
• B. Copper
• C. Sulphur
• D. Aluminium

Answer 1

The correct option is C

Sulphur

The explanation for the correct answer:-

Option (C) Sulphur

• Sulphur is a non-metal with a chemical symbol $\mathrm{S}$ and atomic number 16.
• Non-metals do not possess the property of ductility or malleability.
• Only metals have this property and thus Sulphur cannot be used to draw into wires.
• Hence it is the correct option.

The explanation for the incorrect answer:-

Option (A) Silver

• Silver is a metal with a chemical symbol $\mathrm{Ag}$ and atomic number 47.
• Metals have the property of ductility and malleability.
• Thus Silver being a metal can be used to draw into wires.
• It is also a good conductor of heat and electricity.
• Hence it is the incorrect option.

Option (B) Copper

• Copper is a metal with a chemical symbol $\mathrm{Cu}$ and atomic number 29.
• Metals have the property of ductility and malleability.
• Thus Copper being a metal is widely used to draw into wires.
• They are much cheaper to use.
• It is also a good conductor of heat and electricity.
• Hence it is the incorrect option.

Option (D) Aluminium

• Aluminium is a metal with a chemical symbol $\mathrm{Al}$ and atomic number 13.
• Metals have the property of ductility and malleability.
• Thus Aluminium being a metal is widely used to draw into wires.
• They are also used to make foils.
• It is also a good conductor of heat and electricity.
• Hence it is the incorrect option.

Therefore, Option (C) is the correct answer here.