The finely powdered ore is added to water in a tank containing pine oil. The mixture is agitated by blowing a blast of air. The ore particle preferentially wetted by oil come to the surface with froth...
a quiver of arrows a range of mountains a ream of paper a reel of film a set of clubs a sheaf of grain a shower of rain a stack of wood a string of pearls a wad of notes a chest of drawers a...
A monkey climbing a greased pole ascends 12 m and slips down 5 m alternte minutes. If the pole is 63 m high, how lomg will it take for the monkey to reach the top Ans) In 2 min, the monkey would...