AIIMS2018Chemistry-Inorganic Chemistry

AIIMS 2018 Chemistry Fertilizers Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 11

Assertion: NH2\text{NH}_2^- has a square planar shape.

Reason: Species which involve dsp2dsp^2 hybridization have square pyramidal structure.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Correct Answer

Option C

Detailed Explanation

Option C is correct because the assertion that H₃PO₄ and H₃PO₃ are present in fertilizers for plant protection is true, while the reason stating that H₃PO₃ does not increase the solubility of fertilizers is false; in fact, H₃PO₃ can enhance nutrient availability. Option A is incorrect because, although both statements are true, the reason does not correctly explain the assertion. Option B is incorrect as it claims both statements are true but does not link them appropriately. Option D is incorrect because the assertion is indeed true.

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