Surveying
An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as

contour gradient
horizontal equivalent
contour line
contour interval

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The meridian of a place is

A semi-circle which passes through the place and is terminated at the poles
An arc of the great circle which passes through the place and is perpendicular to the equator
A great circle passing through the place and the poles
A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place

ANSWER DOWNLOAD EXAMIANS APP