4644General KnowledgeMedium
In railway tracks, a small gap is left between the rails ?
ATo save the cost of metal
BTo permit the shrinkage of metal
CTo allow for the expansion during heat
DNone of them
Correct answer
C. To allow for the expansion during heat
Explanation
To allow for the expansion during heat is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.