Q161
In a railway track, two rails are joined end to end with a gap in between them because
A.
Steel can be saved
B.
Accidents due to contraction in winter can be avoided
C.
Air-gaps are necessary for bearing the weight of running train
D.
Accidents due to expansion in summer can be avoided
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
In a railway track, two rails are joined end to end with a gap in between them because accidents due to expansion in summer can be avoided.