Q52
When the temperature of a solid metal increases,
A.
Strength of the metal decreases but ductility increases
AnswerB.
Both strength and ductility of the metal decreases
C.
Both strength and ductility of the metal increases
D.
Strength of the metal increases but ductility decreases
Answer: Option A
Solution
Answer: Option A
Solution:
When the temperature of a solid metal increases,
its intramolecular bonds are brake and strength of solid metal decreases.
Due to decrease its strength, the elongation of the metal increases, when we apply the load i.e. ductility increases