Q. Gaps are left in between rails in railway tracks to allow for __________.

__________ की अनुमति देने के लिए रेलवे पटरियों में पटरियों के बीच अंतराल छोड़ दिया जाता है।

A
Contraction
सिकुड़न
B
Noise control
शोर नियंत्रण
C
Expansion
विस्तार
D
Electrical insulation
विद्युत इन्सुलेशन

Explanation

Metal railway tracks expand in hot weather due to thermal expansion. If no gaps are provided, the tracks could buckle under pressure. The gaps allow space for safe expansion, preventing structural damage.

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