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NEET Sample Paper NEET Sample Test Paper-18

  • question_answer
    The solubilities of \[N{{a}_{2}}S{{O}_{4}},\text{ }BeS{{O}_{4}},\text{ }MgS{{O}_{4}}\]and\[BaS{{O}_{4}}\] will follow the order

    A) \[BeS{{O}_{4}}>Na2S{{O}_{4}}>MgS{{O}_{4}}>BaS{{O}_{4}}\]

    B) \[BeS{{O}_{4}}>MgS{{O}_{4}}>N{{a}_{2}}S{{O}_{4}}>BaS{{O}_{4}}\]

    C) \[N{{a}_{2}}S{{O}_{4}}>BeS{{O}_{4}}>MgS{{O}_{4}}>BaS{{O}_{4}}\]

    D) \[MgS{{O}_{4}}>BeS{{O}_{4}}>N{{a}_{2}}S{{O}_{4}}>BaS{{O}_{4}}\]

    Correct Answer: C

    Solution :

    Alkali metal salts are highly soluble in water so here \[N{{a}_{2}}S{{O}_{4}}\]is the most soluble. For the alkaline earth metal sulphates, the solubility decreases down the group from \[BeS{{O}_{4}}\]to \[BaS{{O}_{4}}.\] Hence, the correct option is [d].


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