Question

Directions: The question consists of two statements, an assertion and a reason. The student must first determine whether each statement is true. Each question below consists of an assertion and a reason.

Assertion(A)     : Igneous rocks are one of the hardest types of rocks.

Reason(R)        : Igneous rocks are formed when molten lava cool and crystallise.

 

1.

Both A and R are true and R is the correct explanation of A.

 

2.

Both A and R are true but R is NOT the correct explanation of A

 

3.

A is true but R is false.

 

4.

A is false but R is true.

 

5.

Both A and R are false.

 

Answer 1

Correct Answer - Option 1 :

Both A and R are true and R is the correct explanation of A.

 

Igneous rocks are formed due to cooling and then crystallisation of molten lava. As we know crystalline structures are very strong and can withstand huge pressure. This makes igneous rocks one of the hardest types of rocks. Thus, both A and R are true and R is the correct explanation of A.