IIT-JEE 2010 Paper 1 Offline | Electrochemistry Question 26 | Chemistry

IIT-JEE 2010 Paper 1 Offline

MCQ (Single Correct Answer)

-1

The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simple model for such a concentration cell involving a metal M is :
M(s) | M⁺ (aq ; 0.05 molar) || M⁺ (aq ; 1 molar) | M(s)
For the above electrolytic cell the magnitude of the cell potential | E_cell | = 70 mV.

For the above cell :

E_cell < 0 ; $$\Delta G > 0$$

E_cell > 0 ; $$\Delta G < 0$$

E_cell < 0 ; $$\Delta G^o > 0$$

E_cell > 0 ; $$\Delta G^o > 0$$

IIT-JEE 2008 Paper 2 Offline

MCQ (Single Correct Answer)

-1

Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate 0.01 mol of H$$_2$$ gas at the cathode is (1 Faraday = 96500 C mol$$^{-1}$$].

9.65 $$\times$$ 10$$^4$$ sec

19.3 $$\times$$ 10$$^4$$ sec

28.95 $$\times$$ 10$$^4$$ sec

38.6 $$\times$$ 10$$^4$$ sec

JEE Advanced Subjects