daedalus1:
"It'll be interesting how much soil will be returned.
The Soviets only managed a few grams with a Proton vehicle.
The Chinese managed just ovee a kilogram using a similar sized launcher, LM5.
The largest Indian launcher has significantly less capability than those two. "
It will be interesting but lets put real numbers in here.
Luna 24 returned 170 grams. The earlier Lunas had much smaller samples because of problems with the sampling system.
Chang'e 5 returned 1750 grams.
Even with 1 launcher, and certainly with a dual launch, ISRO can get a very respectable sample. You can do a lot with - say - 100 grams.
Here's the latest architecture.