Building Materials
The rocks which are formed due to pouring of magma at the earth's surface are called

Plutonic rocks
Hypabyssal rocks
Volcanic rocks
Igneous rocks

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Building Materials
Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

A is false but R is true
A is true but R is false
Both A and R is true and R is correct explanation of A
Both A and R is true and R is not a correct explanation of A

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