Is there any better Laptop other than this within Rs.51200?

http://configure.ap.dell.com/dellstore/config.aspx?c=in&cs=indhs1&l=en&model_id=inspiron-15-3542-laptop&oc=x540315in8&s=dhs&fb=1&vw=classic
DELL Inspiron 15 3000 Series

Processor
4th Generation Intel® Core™ i5-4210U processor (3M Cache, up to 2.7 GHz)
Operating System
Windows 8.1 Single Language (64Bit) English
Memory
4GB Single Channel DDR3L 1600MHz (4GBx1)
Hard Drive 1TB 5400 rpm SATA Hard Drive
Video Card NVIDIA® GeForce® 840M 2GB DDR3L
Dell Services: Hardware Support 1 Year Accidental Damage Protection with 24x7 Phone Support -Retail
LCD
15.6 inch LED Backlit Touch Display with HD resolution (1366 x 768)
Security Software
McAfee® Security Center 15 month subscription

Nope but if you still want to search try other brands

It is priced about right among the better deals available. Snapdeal may discount from the price shown

http://www.snapdeal.com/...LabelId:57
Rs 48991 8GB instead of 4GB in an HP
http://www.rescuecom.com/...14-q1.aspx
Dell Inspiron, HP Pavilion, Lenovo Essential, and all Acer are about the same in quality and reliability as the lower end.

Lenovo Ideapad rates a little better.
Rs 48191 and Rs 47799
http://www.snapdeal.com/...LabelId:57
http://www.snapdeal.com/...LabelId:57
i5-4200M @ 2.50GHz scores 4133
i5-4210U @ 1.70GHz scores 3522

http://www.cpubenchmark.net/...u_list.php
So, the CPU is faster. Graphics is GT 740M
http://www.notebookcheck.net/...900.0.html
and is about 11% lower than a GT 840M.
and at 45445 Rs with an i5-3230M which is also faster than an i5-4210U:
http://www.snapdeal.com/...LabelId:57

When looking at an HP of comparable specs and pricing, and Lenovo Ideapads with faster CPUs but 11% lower in graphics, the only advantage to buying at Dell is the 1x4GB RAM, that you expect to buy another 1x4GB to bring it to 8GB. The 1x4GB performs 8% below a 2x2GB RAM as running single channel rather than dual channel.

Here is a Dell from a weak seller
http://www.snapdeal.com/...arch:8850m
with an HD 8850M instead of GT 840M with other slight differences.
The HD 8850M is stronger than a GT 840M
http://www.notebookcheck.net/...849.0.html

Bottom line, there are OTHER Deals available comparable to the Dell deal but better or worse is a judgement. This is after reviewing about 70 laptops or so for specs.
If I had to choose brand, I would go a Lenovo Ideapad over a Dell Inspiron.
If battery life is not as important as CPU performance, the i5-4200M is a real i5 instead of an underclocked low voltage one. The GT 840M is a slight improvement over the 740M and I don't consider that as an important factor.

"Better" in the price range - Only as a matter of opinions. Clearly, comparable in the price range as a choice to make, and it takes careful research in India to actually get all the specifications of a laptop.