<prompt> Hickey-Hare test is used to diagnose -Congenital pyloric stenosisDuodenal atresiaAchlasia cardiaDiabetes insipidus  <response>: Ans. is d i.e., Diabetes insipidus Hypeonic saline infusion test that induces plasma hyperosmolality. Used for distinguishing between different causes of polyuria and polydipsia. 