Given below are two statements: one is labelled as Assertion and the other is labelled as Reason:

Assertion: The Vice President acts as the President only until a new President is elected.
Reason: The Vice President acts as the ex-officio Chairman of the Rajya Sabha.

Both the Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

The correct answer is Option 2 - Both the Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

Assertion: The Vice President acts as the President only until a new President is elected.
Reason: The Vice President acts as the ex-officio Chairman of the Rajya Sabha.

While both the Assertion and the Reason are correct statements individually, the Reason does not explain why the Assertion is true. The fact that the Vice President acts as the ex-officio Chairman of the Rajya Sabha is unrelated to the Vice President acting as the President until a new President is elected. These are separate roles and responsibilities defined by the Constitution.
Therefore, both the Assertion and the Reason are correct, but the Reason is not the correct explanation for the Assertion.

The Vice President is elected for five years. His election method is similar to that of the President, the only difference is that members of State legislatures are not part of the electoral college. The Vice President may be removed from his office by a resolution of the Rajya Sabha passed by a majority and agreed to by the Lok Sabha. The Vice President acts as the ex-officio Chairman of the Rajya Sabha (REASON) and takes over the office of the President when there is a vacancy by reasons of death, resignation, removal by impeachment or otherwise. The Vice President acts as the President only until a new President is elected (ASSERTION). B. D. Jatti acted as President on the death of Fakhruddin Ali Ahmed until a new President was elected.