In which Amendment was the evil of defections from the political parties in India enacted?

Which Amendment of the Constitution relates to Anti-defection Law?

By which one of the following Constitutional Amendment Acts, was Article 21A (Right to Education) inserted into the Constitution of India?

Under which one of the following Amendment Acts was Sikkim admitted into the Union of India?

In which Amendment of the Constitution of India forests were transferred from the State List to the Concurrent List?

Which of these was not done in First Amendment Act, 1951?