HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryd and f Block elementsAchiever Section

Spiegeleisen is an alloy of :

A.Cu + Zn + Ni (b) Ni + Cr

C.Mn + Fe + C (d) Fe + Cr + Ni

Explanation

Fe-Mn+C 4. Chloroplatinic acid is : (a) monobasic (b) dibasic (c) tribasic (d) tetrabasic The formula of chloroplatinic acid is 2 6 H PtCl . The structure is shown below, This is a dibasic acid. 5. Which of the following is the correct formula for a compound of scandium and oxygen? (a) Sc₂O (b) ScO (c) Sc₃O₂ (d) Sc₂O₃ 2 3 Sc O +3 Sc is the only stable cation of Sc 6. Oxide of metal cation which is not amphoteric? (a) Al³⁺ (b) C

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