When aqueous solutions of two salts are mixed, the third salt formed may appear as a solid precipitate or a clear solution depending upon the solubility of its ions. It is observed that all salts of Na, K, NH4 are soluble. All nitrates and bicarbonates ar

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Q: 91 (NDA-II/2010)
When aqueous solutions of two salts are mixed, the third salt formed may appear as a solid precipitate or a clear solution depending upon the solubility of its ions. It is observed that all salts of Na, K, NH4 are soluble. All nitrates and bicarbonates are also soluble. All halides (chlorides, bromides, iodides) are soluble except those of Ag, Hg (I) and Pb. All sulphates are soluble except those of Ag, Ca, Ba and Pb.
Which one among the following combinations of solutions will produce a solid precipitate?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,24,39,24,16,13,10

keywords: 

{'solubility': [0, 0, 1, 0], 'sodium sulphate': [0, 1, 1, 0], 'salts': [0, 0, 2, 0], 'magnesium sulphate': [0, 0, 1, 1], 'solid precipitate': [0, 0, 1, 0], 'barium chloride': [0, 0, 1, 1], 'aqueous solutions': [0, 0, 1, 0], 'ammonium sulphate': [2, 2, 1, 1], 'chlorides': [0, 0, 2, 2], 'sulphates': [0, 0, 1, 3], 'third salt': [0, 0, 1, 0], 'nitrates': [0, 0, 1, 0], 'solutions': [0, 0, 2, 3], 'potassium bromide': [0, 0, 1, 0], 'barium bicarbonate': [0, 0, 1, 0], 'ions': [0, 0, 0, 3], 'bicarbonates': [0, 0, 1, 0], 'halides': [0, 0, 1, 0], 'clear solution': [0, 0, 1, 0], 'lithium iodide': [0, 0, 1, 0]}

In this question, we are given information about the solubility of various salts. When two aqueous solutions of salts are mixed, a third salt may form as a solid precipitate or a clear solution, depending on the solubility of its ions.

To determine which combination of solutions will produce a solid precipitate, we need to consider the solubility rules mentioned in the question.

Option 1: Sodium sulphate and barium chloride

According to the solubility rules, all sulphates are soluble except those of Ag, Ca, Ba, and Pb. Barium chloride is soluble because all chlorides are soluble except those of Ag, Hg (I), and Pb. Therefore, when sodium sulphate and barium chloride are mixed, a solid precipitate of barium sulphate (BaSO4) will form. Therefore, option 1 is correct.

Option 2: Magnesium sulphate and barium bicarbonate

According to the solubility rules, all sulphates are soluble. Barium bicarbonate is not mentioned in the given solubility rules. Therefore, it is not possible to determine if a solid precipitate will form in this combination.

Option 3: Lithium iodide and barium chloride

According to the