Batteries & Salt Bridge Past Year (2006 - 2015) MCQs Electrochemistry Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

A device that converts energy of combustion of fuels, like hydrogen and methane, directly into electrical energy is known as :

1. Fuel cell
2. Electrolytic cell
3. Dynamo
4. Ni-Cd cell

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The efficiency of a fuel cell is given by :

1. $\frac{∆ H}{∆ G}$

2. $\frac{∆ G}{∆ S}$

3. $\frac{∆ G}{∆ H}$

4. $\frac{∆ S}{∆ G}$

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