In terms of market capitalisation 10 Indian companies find a place in global 500 list according to Financial Times.
The companies which top the list are :

ExxonMobil
PetroChina
Wal-Mart Stores

Wal-Mart last year toped the list and now has slipped to third. ExxonMobil an American Energy giant over took Wal-Marts position.

Rank
Company
Market Cap

75
Reliance Ind.
47.25

120
ONGC
32.87

138
NTPC
29.29

188
Bharti Airtel
23.41

330
Infosys Technology
14.95

345
BHEL
14.51

362
ITC
13.75

372
SBI
13.35

483
TCS
10.42

495
HUL
10.23

Only One company ie. Reliance [...]

The full form of Sensex is Sensitive Index and of NIFTY National Fifty.
Sensex is a Bench mark index of BSE and Nifty is an Index of NSE.
Sensex 30 comprises of all major companies listed on BSE based on their market cap. and liquidity.
Some of the companies at present in SENSEX 30 are Reliance Ind., Infosys [...]

Ever since the credit crunch surfaced in late 2007, there has been a dramatic fall in the prices of financial assets amounting to a total wealth erosion of $28 trillion across the world, economic forecasting consultancy Oxford Economics has said. 
Oxford Economics estimates that the “total financial wealth has fallen some $28 trillion, or 14 per cent, [...]

Rakesh Junjunwala rightly defined the stocks markets as “Markets are like women always demanding, unpredictable and volatile.” No one know whats next. For an instance take it – Does any one knows when this recession is going to end ? No, no can say it accurately, one can just predict but as all know that [...]

When some one says Long term investment the first thing to come in mind is Patience.
Do you know an investment of Rs. 10,000 in Wipro in 1979 would be worth more than 200 Cr. today. Believe it or not but this is the fact.
So all of you all may be searching for another Wipro. But [...]