Surveying
For accurate work, the steel band should always be used in preference to chain because the steel band

is lighter than chain
can be easily repaired in the field
is practically inextensible and is not liable to kinks when in use
is easier to handle

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Contour interval is

Larger if the time available is more
Directly proportional to the flatness of ground
Inversely proportional to the scale of the map
Larger for accurate works

ANSWER DOWNLOAD EXAMIANS APP