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  1. A small gap is left at the joints of rails in a railway track to
    1. avoid the tracks being distorted due to seasonal temperature variation
    2. avoid the heating of tracks to high temperature
    3. control the speed of train
    4. keep the rails equidistant
Correct Option: A

A small gap is left at the joints of rails in a railway track to provide space for the expansion of rail pieces when the temperature rises during summer.



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