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D and F Block Elements question

2023 · 31 Jan · Shift 1 · Q1
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  5. /2023 · 31 Jan · Shift 1 · Q1

D and F Block Elements question

2023 · 31 Jan · Shift 1 · Q1

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
When Cu2+\mathrm{Cu}^{2+}Cu2+ ion is treated with KI\mathrm{KI}KI, a white precipitate, X\mathrm{X}X appears in solution. The solution is titrated with sodium thiosulphate, the compound Y\mathrm{Y}Y is formed. X\mathrm{X}X and Y\mathrm{Y}Y respectively are :
  1. A
    X=CuI2\mathrm{X=CuI_2}X=CuI2​ Y=Na2S4O6\mathrm{Y=Na_2S_4O_6}Y=Na2​S4​O6​
  2. B
    X=Cu2I2\mathrm{X=Cu_2I_2}X=Cu2​I2​ Y=Na2S4O6\mathrm{Y=Na_2S_4O_6}Y=Na2​S4​O6​
  3. C
    X=CuI2\mathrm{X=CuI_2}X=CuI2​ Y=Na2S2O3\mathrm{Y=Na_2S_2O_3}Y=Na2​S2​O3​
  4. D
    X=Cu2I2\mathrm{X=Cu_2I_2}X=Cu2​I2​ Y=Na2S4O5\mathrm{Y=Na_2S_4O_5}Y=Na2​S4​O5​
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