Sex ratio is the most fundamental demographic attribute as it determines the reproductive potential, marital states, work force, migration pattern, growth of population and the socio-economic relationship. In fact, it is an important attribute to measure of prevailing equality between males and females in society at a given point of time in India. In our country it had always remained unfavourable to females. The national average of sex ratio is 940. Sex Ratio may be defined as the number of females per thousand males.