Option 1: The 10th schedule of the Constitution of India does lay down that elected members may be disqualified on the grounds of defection. This means that if a member of Parliament or a State legislature voluntarily gives up the membership of his or her party or votes against the directions of his or her party, they may be disqualified.

Option 2: This statement is NOT true. Disqualification on the ground of defection does not apply in cases of a merger with another political party. When there is a merger, the members who join the new political party are not disqualified.

Option 3: Cases of dispute regarding disqualification are indeed decided by the speaker or Chairman of the House concerned. This means that if there is a dispute regarding disqualification, the decision is made by the speaker or Chairman of the House, and their decision is final.

Option 4: This statement is also true. The Supreme Court of India is the final arbiter in cases which remain unresolved. If there is a dispute regarding disqualification that is not resolved by the speaker or Chairman of the House, the Supreme Court of India has the authority to make the final decision.

In summary, option 2 is the correct answer because disqualification on the ground of defection does not apply to cases