Kankar stones are used in preparing a concrete mixture.
Which machine will you use to :
(a) draw water from a well?
(b) move aside a big stone tying in a field?
(c) load a heavy box on to a motor car?
(d) open a bottle of an aerated drink?
(e) lift a mixture of cement-concrete at a construction site?
Grinding stones used to prepare paste/powder of spices and grains are made of