Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
A reacts with all solutions, B reacts with some solutions, C and D do not react
A and B react with all solutions, C and D do not react
A, B, and C react with all solutions, D does not react
A, B, C, and D react with all solutions
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.