expansion gaps are kept in railway tracks because of
A. EXPANSION OF RAILS IN COLD WEATHER
B CONSTRUCTION OF RAILS IN HOT WEATHER
C EXPANSION OF RAILS IN HOT WEATHER
D CONSTRUCTION OF RAILS IN COLD WEATHER
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(C) Expansion of Rails in Hot Weather ✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️
Extra information :
The rails contract in Cold Weather.
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