Q570
Water pipes in hilly areas often burst on a cold frosty night, because
A.
The material of which pipes are made contracts due to cold and so breaks
B.
Water in the pipes freezes and on freezing water expands, so pipes break
AnswerC.
Frost makes the pipes rusty, so they break
D.
None of these
Answer: Option B
Solution
Answer: Option B
Solution:
Water pipes burst because the water inside them expands is it gets close to freezing, and this causes an increase in pressure inside the pipe.