Muslim law & Jurisprudence__ Six Questions on Marriage Topic in one lecture__PMS, CSS, PCS, LLB

1-Define marriage and what are essentials of a valid marriage? 2- What are the impediments to a valid marriage? 3- Define valid, void and irregular marriages/ classification of marriage and legal effects? 4- Define legal capacity to enter into marriage? 5- How marriage is registered under Muslim Family Law Ordinance 1961? 6- What are irregular marriages and how they can be cured and converted into regular/valid marriages?