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Question
It is said that Sandstone is more resistant to weathering compared to Granite. What is the basic reason behind this phenomenon?
Options:
A .  The external outline form of sandstone
B .  Sandstone is harder than granite
C .  Granite is mainly made of quartz
D .  Sandstone is mainly made of quartz
Answer: Option D
Answer: (d).Sandstone is mainly made of quartz

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