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KVPY Sample Paper KVPY Stream-SX Model Paper-30

  • question_answer
    A solution of \[Ni{{(N{{O}_{3}})}_{2}}\] is electrolysed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be deposited at the cathode?

    A) 0.10

    B) 0.05

    C) 0.20

    D) 0.15

    Correct Answer: B

    Solution :

    \[gm\,E(Ni)=F\]
    \[Moles\times V.F.=0.1\]
    \[x\times 2=0.1\]
    \[x=0.05\]
    \[N_{i}^{+3}+2{{e}^{-}}\to Ni.\]


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