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Q241) When KI and CuSO4 solutions are mixed, it gives [ BHU 1993]




SOLUTION


Answer: (b)


Q242) Which of the following is not a property of the transition elements? [ MP CEE 1999]




SOLUTION


Answer: (c)


Q243) Zn and Hg belong to the same group yet they differ in many of their properties. the property that is shared by both is [ Pb CET 1998]



SOLUTION


Answer:(a)



Q244) The only cations present in a slightly acidic solution are Fe3+, Zn2+ and Cu2+. the reagent that when added in excess to this solution would identify and separate Fe3+ in one step is.... [ IIT 1997]



SOLUTION

When NH4OH is added Fe3+ will form Dark brown ppt which can be separated. While Zn2+ will form colourless solution and Cu2+ will form blue solution
Answer: (b)


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