Question

Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
(a) copper bottom makes the pan more durable.
(b) such pans appear colourful.
(c) copper is a better conductor of heat than the stainless steel.
(d) copper is easier to clean than the stainless steel.
NCERT Solutions for Class 7th Science Chapter 4 Heat Page 47 Exercise Question 11

Answer 1

Stainless steel pans are usually provided with copper bottoms and the reason is copper is a better conductor of heat than the stainless steel.

Stainless steel is the alloy of Iron having the 10.5% Chromium minimum.

Normally, the Chromium that produces thin layer of oxide with surface of steel called as 'passive layer'.

Answer 2

Stainless steel pans are usually provided with copper bottoms because

(c) copper is a better Conductor of heat than the stainless steel.