11. Rain water collect in a large underground
tank is called……………………..
water harvesting
crop harvesting
none of them
Saturday, February 23, 2013 RKN KV3 GWL
44. O.R.S. is the mixture of ………………
sugar , common salt
sugar , common salt sodium
bi carbon oxide , lemon juice
sodium bi carbonate, lemon juice
Saturday, February 23, 2013 RKN KV3 GWL
50. Rain water collect in a large underground
tank is called……………………..
water harvesting.
crop harvesting.
None of them
Saturday, February 23, 2013 RKN KV3 GWL