Question

Match List-I with List-II.

List-I	List-II
(A) Close contour lines	(I) foot hill
(B) Wider contour lines	(II) higher contour values outside
(C) Depression	(III) at right angles
(D) Crossing of ridge lines	(IV) top of hill

Choose the correct answer from the options given below:

• (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
• (A) - (IV), (B) - (II), (C) - (I), (D) - (III)

Hint:

Think about how contour spacing shows slope steepness and how a depression differs from a hill in its contour values.

Answer 1

The Correct Option is A

A different way to solve this is by eliminating the wrong pairs one at a time.
First, a depression is opposite to a hill: on a hill the centre has the highest value, but in a depression the centre has the lowest value, so the values read higher as you move outward. This fixes (C) with (II).
Second, contour lines always meet a ridge or valley line at 90 degrees, never obliquely, so (D) must pair with (III), at right angles.
Third, on hilly ground the slope is steepest near the summit, so contours bunch up there, giving (A) close contour lines with (IV) top of hill.
Fourth, by elimination the remaining pair (B) wider contour lines goes with (I) foot hill, where the ground is flatter.
\[ oxed{(A)-(IV),\ (B)-(I),\ (C)-(II),\ (D)-(III)} \]