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Physics-

General

Easy

Question

The unit of e.m.f is

Joule
Joule-coulomb
Volt-coulomb
Joule-coulomb

The correct answer is: Joule-coulomb

Unit of $e. m. f. equals v o l t equals j o u l e divided by c o u l o m b$

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The correct relationship between free energy change in a reaction and the corresponding equilibrium constant K_C is

The correct relationship between free energy change in a reaction and the corresponding equilibrium constant K_C is

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The relationship between free energy and electrode potential is

The relationship between free energy and electrode potential is

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For a spontaneous reaction the $increment$ G , equilibrium constant (K) and $E subscript text cell end text end subscript superscript 0 end superscript$ will be respectively

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For a cell reaction, $C u to the power of 2 plus end exponent open parentheses C subscript 1 end subscript comma a q close parentheses plus Z n left parenthesis s right parenthesis rightwards arrow Z n to the power of 2 plus end exponent open parentheses C subscript 2 end subscript comma a q close parentheses plus C u left parenthesis s right parenthesis$ of an electro chemical cell, the change in standard free energy, $increment$ G⁰ at a given temperature is

For a cell reaction, $C u to the power of 2 plus end exponent open parentheses C subscript 1 end subscript comma a q close parentheses plus Z n left parenthesis s right parenthesis rightwards arrow Z n to the power of 2 plus end exponent open parentheses C subscript 2 end subscript comma a q close parentheses plus C u left parenthesis s right parenthesis$ of an electro chemical cell, the change in standard free energy, $increment$ G⁰ at a given temperature is

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For the electrochemical cell, $M open vertical bar M to the power of plus end exponent close vertical bar open vertical bar X to the power of minus end exponent close vertical bar X comma E subscript M to the power of plus end exponent divided by M end subscript superscript ring operator end superscript equals negative 0.44 V$ and $E subscript X divided by X to the power of minus end exponent end subscript superscript ring operator end superscript$ From this data, one can deduce that :

For the electrochemical cell, $M open vertical bar M to the power of plus end exponent close vertical bar open vertical bar X to the power of minus end exponent close vertical bar X comma E subscript M to the power of plus end exponent divided by M end subscript superscript ring operator end superscript equals negative 0.44 V$ and $E subscript X divided by X to the power of minus end exponent end subscript superscript ring operator end superscript$ From this data, one can deduce that :

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The cell for which the cell reaction is $straight H subscript 2 plus Cu to the power of 2 plus end exponent not stretchy rightwards arrow 2 straight H to the power of plus plus Cu$ is represented as

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The cell reaction of the galvanic cell, Cu(s) / Cu²⁺(aq) // Hg²⁺(aq) / Hg(l) is

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A graph is drawn between the l eq values and concentrations of an electrolyte Which of the following electrolyte will correspond to the graph given ?

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The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2.

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The unit of self inductance of a coil is

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