Question

Match List-I with List-II

List-I	List-II
(A) Cable tool method	(I) crab winch
(B) Hand boring set	(II) hydraulic jack
(C) Anchor bolt method	(III) large size holes
(D) Reverse circulation rotary drilling	(IV) drilling in boulders

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

Hint:

To remember reverse circulation (RC):
In regular rotary drilling, mud goes down the pipe and up the annulus.
In reverse rotary drilling, mud goes down the annulus and up the drill pipe, which is ideal for large-diameter wells.

Answer 1

The Correct Option is A