Question

For cooking the food, which of the following type of utensil is most suitable -
A. High specific heat and low conductivity.
B. High specific heat and high conductivity.
C. Low specific heat and low conductivity.
D. Low specific heat and high conductivity.

Answer 1

Hint : Conduction is the primary method of heating solids. Heat is transmitted from one particle to another by collisions in the process of conduction. This heat transmission occurs solely in solids because all particles in solids are closely packed and pass quickly.

Complete step-by-step solution:
Low specific heat is preferred for cooking utensils since it requires less heat to raise its temperature and has a high conductivity because it must transfer heat quickly. As a result, it needs to be low in specific heat and high in conductivity.
Cooking utensils are typically made of copper, brass, or steel. Tin is applied to the surface of copper, brass, or steel to prevent corrosion. Note that the majority of non-metals are poor heat and electrical conductors. Graphite, on the other hand, is an exception since it conducts both electricity and heat.
Silver is a good heat conductor as well as an excellent conductor of electricity. Iron is also recognized for being a good heat conductor. Lead, on the other hand, is the least efficient heat conductor of the metals listed.
So option D is true.

Note: The most common method of heat transport within a solid object or between solids in thermal contact is conduction. Because of the space between molecules, conduction is most important in solids and less so in liquids and gases. The least major mode of heat movement on Earth is radiation. The temperature at the Earth's surface is controlled by the process of heat exchange between the Sun and the Earth via radiation.