Question

Why do windows in cold countries have double glazing?

• A. For the conduction of heat
• B. For the insulation of heat
• C. For the radiation of heat
• D. For the convection of heat

Answer 1

The correct option is B For the insulation of heat

In cold countries, windows have double glass panes with a small space between them. This space contains air which is a bad conductor of heat and prevents the dissipation of heat away from the rooms. This is called double glazing.