JEE Main Chemistry: Thermal Properties of Matter questions with solutions

Q1. Wooden sticks or boxes are commonly used to hold or pack ice-cream. Which property of wood makes it suitable for this purpose?

1. Wood is a poor conductor of heat and therefore acts as a thermal insulator, slowing the melting of the ice-cream
2. Wood is a good conductor of heat and quickly cools the ice-cream
3. Wood chemically reacts with ice to keep it solid
4. Wood absorbs the cold and lowers the surrounding temperature

Answer: Wood is a poor conductor of heat and therefore acts as a thermal insulator, slowing the melting of the ice-cream

Wood is a poor conductor (good insulator) of heat, so it minimizes heat flow from the surroundings into the ice-cream, preventing it from melting quickly.