Which of the following disentitles a Hindu woman from the right to maintenance and separate residence…

Section 18(3) of the Hindu Adoptions and Maintenance Act, 1956 disentitles a Hindu wife to separate residence and maintenance from her husband if she is unchaste or ceases to be a Hindu by conversion to another religion. Remarriage also ends her claim against her former husband: a lawful remarriage can follow only after the earlier marriage has ended, and section 25(3) of the Hindu Marriage Act, 1955 lets the court rescind an order of maintenance if she has remarried. All three therefore defeat the claim, so "All of the given options are correct".