Question

Tungsten is used in electric bulbs because

• A. It is metallic
• B. It is sonorous
• C. It has high density
• D. It has high tensile strength

Answer 1

The correct option is D

It has high tensile strength

Explanation:

Tungsten:

• Tungsten is a chemical element with an atomic symbol $\mathrm{W}$ and has atomic number $74$.
• Tungsten is a very rare metal that is found on Earth naturally.
• It belongs to Group-$6$ with an electronic configuration $\left[\mathrm{Xe}\right]4f^{14}5d^{4}6s^2$.
• Tungsten has the highest melting point of $3695\mathrm{K}$.
• Tungsten has the greatest tensile strength out of all the metals.

Applications of Tungsten:

• Tungsten is used in electric bulbs as its melting point is very high and its tensile strength is also very high.
• Tungsten metals are also used in heating elements as well as field emitters.

Hence, the correct option is D. Tungsten is used in electric bulbs because it has high tensile strength.