43) Name the tool, which is used to lift or move heavy loads by leverage effect.

44) In a machine maintenance manual, regarding the frequency of lubricating the machine, square symbol represents

45) How many cubes of 4mm side can be cut from cube of side 8 mm?

46) A spherical aluminium ball is melted and made into smaller balls of 1/3 rd radius of original one. Then how many such balls can be made?

47) An alloy of weight 63 kg is made up of Copper, Zinc, and Tin metals by mixing in the ratio of 4:3:2 respectively. Then pick the correct weights (kg) of each metal in this alloy in a same order?