Question

At what temperature does the water molecules contract?

(a) At 0^0C

(b) Below 0^0C

(c) At 4^0C

(d) Between 0^0C and 4^0C

This question was posed to me during a job interview.

This interesting question is from Intermolecular Forces topic in division Materials and their Properties of Engineering Chemistry I

Answer 1

Correct answer is (d) Between 0^0C and 4^0C

To elaborate: Water contracts when heated between 00C and 40C. In this range of temperature, all the water molecules breaks down to change its state.