Science

The scopes of Environmental Science is limited at present in India, but is going to see a plunge in the near future. As you know almost in all sector Environmental Protection is given emphasis, hence Environmental Science graduates have a bigger scope. But as of now the main problem is that the job that should be done by Environmental Post graduates are being done by students of Chemistry, Forestry, Agriculture, Botany etc. This is causing a stiff competition for Env. Science students. But there are still a lot of areas where Environmental Postgraduates are preferred. Environmental Consultancy: Many environmental consultancies like RAMKY, ENZEN etc. Are eager to take environmental engineers as Env. Science. Postgraduates have broader knowledge about EIA, Environmental Chemistry, Environmental law etc. Hence because of their versatility, they are preferred over general Science students. Environmental NGO :Green Peace, WWF, CSE Delhi etc. Are the primary NGOs which hire environmental Science post graduate for multiple jobs ranging from Environmental journalism to programme Managers. State, National and International Agencies:This includes State SPCB, State EIA, CPCB labs, MOEFCC, CES, UNEP, WHO, UNDP etc. These are the best aspects for Environmental Science. Postgraduates as in these institutes you are directly involved in the decision making process and hence can work directly to help Environment. Research Lab:Almost all the university and government research organisation has an Environmental Department. These labs need JRF or Project Assistants for various projects. These are most preferable for students who intend to pursue career in Research in Environmental Sciences. NET/GATE eligibility is most preferred. Government PSUs: NTPC, IOCL, CIL etc. All have environment departments. They prefer M.Sc. And M.Tech in Environmental engineering. They also require GATE/NET Score but few PSUs also take students from their own entrance exams.

Imagine a positive charge placed in free space, you know that all its lines of force are directed outward with equal solid angle between them. But if we place a material through which electric field lines pass more easily than through free space, then its permittivity is more compared to free space and consequently more electric lines of force will pass through it.
This property varies with variation of medium; for example let us imagine you were told to swim in an extremely dense liquid and then you were given a choice to swim in water, what would you choose? Simple, you would say water, as it was more easy to swim in, same way space is more appropriate than some mediums and less than some with respect to allowing electric field lines to pass through it, as a result we can conclude that it is a number which describes the ability of a medium to allow electric lines of force to pass through it.