ranging

centring

horizontal control

vertical control

only (i)

(i)and(ii)

(ii) and (iii)

(i), (ii) and (iii)

direct method

square method

cross-sections method

tacheometric method

Contour interval on any map is kept constant.

Direct method of contouring is cheaper than indirect method.

Inter-visibility of points on a contour map cannot be ascertained.

Slope of a hill cannot be determined with the help of contours.

depression

hillock

plain surface

none of the above