The emf of a cell is always greater than its terminal voltage. Why?

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The e.m.f. of a cell is always greater than the terminal potential difference between its two pole. Reason: There is always some potential drop across the internal resistance of the cell.

The effective area of a rough body is always greater than its geometrical area . On blackening the bottom of rough bodies ,their absorptance increases . True/False.

Two cells X and Y are connected to a resistance of 10Ω as shown in the figure.if the polarity of the cell Y is reversed, then the terminal voltage of the cell Y will be

Is the sum of any two angles of a triangle always greater than the third angle?

Product of two integers is always greater than the sum of integers.

When the total cell emf of the voltaic cell is greater than zero, which of the following is true about the reaction quotient Q and free energy change DeltaG for the cell reaction?