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Q.

(A) : As2O3, Sb2O3 is amphoteric in nature
(R) : As is an example of metalliods

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a

A is false but R is true

b

A is true but R is false

c

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

d

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

answer is B.

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Detailed Solution

We know that As and Sb both are metalloids and metalloids form their oxides amphoteric.

Therefore, Assertion is correct but the reason is not the complete explanation of Assertion that is why it is incorrect.

Hence, option(b) is the answer.

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(A) : As2O3, Sb2O3 is amphoteric in nature(R) : As is an example of metalliods