This question asks what the Doctrine of Unjust Enrichment actually implies, and the two component statements need to be checked separately before deciding whether one, both, or neither applies.
The doctrine is not just about identifying an unjustified gain, it also imposes the restitutionary consequence that follows from it, so both statements together define it.
Therefore, the correct answer is Both (A) and (B).
The question asks whether unjust enrichment applies only in contractual matters, only in tax matters, in both, or in neither, so the scope of the doctrine in each field needs to be examined.
The doctrine is not confined to a single branch of law; it is a general equitable principle that courts extend wherever one party would otherwise retain a benefit without legal justification, whether that arises from a contract or from a tax collection.
Therefore, the correct answer is Both (A) and (B).
This question requires matching each scenario to the settled two-part test for a tax refund on the ground of unjust enrichment: the tax must be shown to be refundable, and the burden must not have been passed on to someone else.
What unites the two valid scenarios is not whether the tax was authorised, but whether the claimant actually bore the cost; scenario (B) fails only because the burden was shifted to the consumer.
Therefore, the correct answer is Both (A) and (C).
This question asks under what circumstances a tax can be struck down as unconstitutional, which requires checking each proposed ground against the constitutional scheme for taxation in India.
The fourth option confuses an administrative or factual error in assessment with a constitutional defect in the taxing power itself, which is a different kind of challenge altogether.
Therefore, the correct answer is Both (A) and (B).
The question asks in which case a challenge to the constitutionality of the Goods and Services Tax (Compensation to States) Act, 2017, on the ground of lack of legislative competence, was rejected, so each cited case needs to be checked against its actual subject matter.
Only the Sudhir Kumar Atrey litigation squarely presents and disposes of a legislative competence challenge to the 2017 Compensation Act, which the Court rejected.
Therefore, the correct answer is Sudhir Kumar Atrey v. Union of India (2022) 1 SCC 352.
This question asks what an additional tax-on-tax levied for a specified purpose is called, and the terms offered need to be distinguished by their defining features.
The defining features in the question, an additional levy calculated on top of an existing tax and dedicated to one named purpose, correspond exactly to how a cess operates and to nothing else on the list.
Therefore, the correct answer is Cess.