no , sale tax is levied on sale only. the operative expeses 
is not considered as sale. so no sale tax is levied

These are the laws that we studied in 3 years LL.B
environmental law
constitutional law
international law
family law 1(hindu law) 
family law (muslim law)
law of torts
administrative law
company law
law of evidence
law of crimes
labour law
intellectual property law
land and local laws
women and law
law of banking

these are the laws that we studied in 3 years bgl
        1.juris prudence 
        2.legal language
        3.indian penal code
        4.law of torts
        5.family law 1
        6.family law 2
        7.transfer of property
        8.contract 1
        9.contract 2
        10.land law
        11.company law
        12.inter natiomal law and human rights
        13.law of evidence
        14.environmental law
        15.taxation of law
        16.civil procedure code
        17.criminal procedure code
        18.interpretion of statutes
        19.administrative law
        20.banking law
        21.labour law
        22.constitution law
        23.intellectual property law
        24.criminalogy

yes it is possible, when the pakistani girl live in india 
182 days or more during the relevent p.y. OR 60 days are 
more, 365 days or 4 years immediately preceding the 
prevoius year and fulfil the additional condition she live 
in india at least two out of ten years preceding the 
p.y.and 365 days at least out of seven years.

simply , she will have to stay in india more than 
applicable days or  she can marry in india which is the 
simple way to get the indian citizenship.

The existing wage-limit for coverage under the Act, is 
Rs.10,000/- per month (with effect from 1.10.2006).