Option 1: The Eighth Schedule is correctly matched with Languages. The Eighth Schedule of the Indian Constitution lists the official languages recognized by the government.

Option 2: The Second Schedule is incorrectly matched with Form of Oath of office. The Second Schedule actually deals with the provisions related to the Salary and Allowances of the President, Governors, and Judges of the Supreme Court and High Courts.

Option 3: The Fourth Schedule is correctly matched with Allocation of seats in Rajya Sabha. The Fourth Schedule of the Indian Constitution provides details about the allocation of seats in the Rajya Sabha (the upper house of the Parliament) to the different states and union territories.

Option 4: The Tenth Schedule is correctly matched with Defection related provisions. The Tenth Schedule, also known as the Anti-Defection Law, lays down the provisions related to disqualification of elected members of Parliament or state legislatures on grounds of defection.

Therefore, the incorrect match is option 2.