A. A sea breeze is due to convection in air
B. Cotton materials are better than woolen ones for use in hot weather
C. Convectional currents play an important role in the cooling of the engine of a motor car
D. The vacuum space in a flask helps to reduce heat loss by radiation.
Correct Answer:
Option D – The vacuum space in a flask helps to reduce heat loss by radiation.

![Calculate the quantity of heat needed to change the temperature of 60g of ice at 0 °C to 80 °C. [specific latent heat of fusion of ice= 3.36 x 105 Jkg‾¹ specific heat capacity of water 4.2 x 10³ J kg‾¹ K‾¹] past-questions-and-answers](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers-150x150.jpg)