55) Which survey deals with the determination of quantities and collecting the data for the design of engineering projects such as roads, dams, reservoir, watersupply and sewerage?

56) What survey deals in unearthing the relics of the part?

57) How many links are available in a 30 M metric chain?

58) What is the required length of a diagonal scale with RF = 1/20 and length to be measured is 2 m?

59) Which solid has eight equilateral triangular faces?