Which natural material is available at a blackmith's place?

Name some natural materials.

Which is natural satellic of the earth?

Water in the soil available to plants is:

Which fraction of water is available to plants for absorption by roots?

Which material is best conductor?

A manufacturer of patent medicines is preparing a production plan on medicines, A and B. There are sufficient raw materials available to make 20000 bottles of A and 40000 bottles of B, but there are only 45000 bottles into which either of the medicines can be put. Further, it takes 3 hours to prepare enough material to fill 1000 bottles of A, it takes 1 hour to prepare enough material to fill 1000 bottles of B and there are 66 hours available for this operation. The profit is Rs 8 per bottle for A and Rs 7 per bottle for B. How should the manufacturer schedule his production in order to maximize his profit?

The vast quantity of water is available in-

Which food material is prepared by bees?

Which is the natural solid fuel?