In case of Index and Stock F&O, trader sees quantity as 75 / 150 / 225 and not as 1 / 2 / 3 (Lots) as in the case of currency derivatives where it is shown as 1 / 2 / 3 and not 1000 / 2000 / 3000. Even commodities reflect the quantity as (Lots) same as currency derivatives.
Any specific reason for this ? It leads to a bit confusion
The primary reason is that the Exchange keeps changing the units for its own profitability. The same thing cannot be done in foreign exchange because everything is pegged to the fluctuations happening around the clock.