Question

Which of the following statement is FALSE?
(A) Greater ratio of surface area to volume, more
the hardening effect.
(B) Cooling is faster in water than oil.
(C) Spheres cool faster than irregular shaped
objects.
(D) Precipitation hardening can also be called
age
hardening​

Answer 1

Answer:

A) I think so don't know perfectly

Answer 2

Answer:

(B) False. Cooling is slower in water than in oil.

(C) False. Spheres cool slower than irregularly shaped objects.

Explanation:

• The specific heat of water is higher than that of oil, hence it takes it longer for the water to heat up and cool down.
• Spheres cool slower than irregularly shaped objects because of the greater surface area.
• The statements, greater ratio of surface area to volume, more hardening effect, and precipitation hardening can also be called age hardening are true.