"In hilly areas, sand is thrown on tracks covered with snow ". Why ?

1.	"In hilly areas, sand is thrown on tracks covered with snow ". Why ?
Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/hilly-1024063" style="font-weight:bold;" target="_blank" title="Click to know more about HILLY">HILLY</a> areas, <a href="https://interviewquestions.tuteehub.com/tag/train-1425202" style="font-weight:bold;" target="_blank" title="Click to know more about TRAIN">TRAIN</a> <a href="https://interviewquestions.tuteehub.com/tag/could-410026" style="font-weight:bold;" target="_blank" title="Click to know more about COULD">COULD</a> not be able to move upwards. By throwing <a href="https://interviewquestions.tuteehub.com/tag/sand-1194769" style="font-weight:bold;" target="_blank" title="Click to know more about SAND">SAND</a> friction is <a href="https://interviewquestions.tuteehub.com/tag/increased-1040402" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASED">INCREASED</a> then the train would be able to move upwards.</body></html>

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