1)I am currently working in Kerala(Trivandrum).There isn't any good GMAT training centres to my knowledge out here. So could you recommend me a good online GMAT prep course? Also any further info on preparation strategies are welcome.
2)I came upon a list of Triple Accredited B-Schools. Is this triple accreditation over rated?If not, is it very hard to get into one of those?I found some schhols in france like "ROUEN" with triple accreditation. I found the course fees there within my budget but have not heard any mention of the school anywhere in my circle.(90% chance that i am ignorant )
3)What is the difference between Operations Management and Supply chain management.In some places Operations is defined as a subset of supply chain and in others its the opposite.
4)Though i know that a masters should not be approached with just the ROI in mind, which do you think is a worthwhile course MS in supply chain or operations / MBA with specialisation in operations or supply chain. I come from a middle class family and could do with a few less zeroes in the educational loan. 
5)It would be helpful if any of you could recommend a few b-schools that offer very good courses in operations or supply chain.Which destination do you think suits my preferred course- Europe or US
This is a free forum, and everyone who dishes the advice out on this forum does it on their personal time and availability. What drives us all is the desire and intent to help people like yourself. I myself have to go days / weeks without responding when I don't have time to access the forum. So please be patient when posting your queries, and avoid posting them on multiple threads.
Now to your questions:
1. Go to the GMAT section of this forum and ask a poster called
psychodementia for guidance around GMAT.
2. A lot of schools boast the "triple crown" of AACSB, AMBA and EQUIS accreditations. These are indicators of academic quality, not necessarily of the success the school's graduates might have in the immediately served job market. ESC Rouen largely serves France, and to a smaller extent Western Europe. It's a 2/3rd tier school in the EU at best. The most well known EU schools are INSEAD, LBS, IMD, IESE, IE, ESADE, Said-Oxford, Judge-Cambridge, Cranfield, HEC, RSM and a few more that make up the Top 10-12. The best schools are not just about accreditation and academic quality. They also (most importantly) have strong & active Alumni in all industries, and a very good career services office that is able to do 2 things:
a) arrange for companies to visit campus and present to MBAs
b) train the MBAs to conduct an effective job search off-campus
3. You're quite right :-). It can get confusing! It gets worse when companies have sub-definitions like "marketing operations" or even "sales operations".
Without a debate - I would call the
supply chain the over-arching definition.
A supply chain (a wider definition is "value-chain") is every physical movement & handling from feedstock to intermediate conversion, raw material, spare parts and machinery purchasing, manufacturing (yes, the factories), finished product packaging & customization, transportation and distribution - from origin to customer! Each of these steps includes its driving and enabling components. The operational
driving components would something like Logistics Management, Planning, Tactical procurement, manufacturing & distribution. Teh critical strategic / tactical
enabling components would be Strategic Sourcing, IT systems, D & S Planning, Project / Program management, Operational Excellence (including Lean six-sigma & stuff), finance, and (for large SC organizations) HR and legal support.
4. I would look less at the degree's name, and more at what it offers in terms of various parameters, the foremost amongst them the opportunity to access a job market with the kind of employment opportunities you will seek; and what skills and education you need to learn in order to access that job market. You're still at an early career level, so a more expensive MBA is not likely to drive a greater career jump at this stage - as you don't have the extensive supply chain experience to offer a tangible contribution in a mid-senior role. You will need to get into the function at a fairly junior/mid role, in a more sub-specialist area of the broad supply chain that I've described.
In India - the best school is NITIE in Mumbai. It's slightly niche, in that people largely go into operations, supply chain and (associated) consulting. If you want a cost effective education and a near-guaranteed entry into the junior executive supply chain ranks in an industrial company - this is the school to go to. See the recruiter list and you'll know. IIT Kanpur has a strong Masters in Industrial and Management Engineering Program which you might want to consider. It's acquiring a seriously good reputation now. It's a path of lower resistance that might definitely lead to an international career if you join an MNC or Global Consulting firm with a strong SC / operations practice.
Abroad - it gets a little more challenging - you can do the MBA or an MS, it depends on the school offered. What I normally suggest to people looking for such education outside India is to look for (particularly in the US) programs attached to Universities having both a strong business school and a strong engineering school - so the MBAs / Masters programs offered by MIT, Cornell, Michigan, Illinois-Urbana, Maryland-College Park, Georgia-Tech, Berkeley etc... While in the UK/EU, the best known M.Sc in Operations, Supply Chain management would be at Cranfield, TU Delft (Holland) and the Swiss Federal Institute of Technology (ETHZ). Of course, this is a more challenging path as you will not experience "placements" like you do in India (as you will need to do a lot more to find a job) and will compete with equally or better qualified, asier to recruit, and culturally more aware local/EU candidates.
5. Have answered above.
All the best
Baccardisprite