Paper : AIPMT 2007 Biology Screening (Part -1)
All India Pre-Medical / Pre-Dental Entrance Examination

Q. 1. In which of the following the hydration energy is higher than the lattice energy?

1. SrSO₄
2. BaSO₄
3. MgSO₄
4. RaSO₄

Sol. MgSO₄ is the most soluble out of the given alkaline earth metal sulphates. Correct choice: (3)

Q. 2. Which of the following statements, about the advantage of roasting sulphide ore before reduction is not true?

1. Roasting of the sulphide to the oxide is thermodynamically feasible.
2. Carbon and hydrogen are suitable reducing agents for metal sulphides.

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