
Step 1: Identify the relationship in the first pair.
"Eject" means to throw out or expel, while "Insert" means to put in.
These two are antonyms (opposites).
Step 2: Apply the same relationship to the second pair.
We need a word that is the opposite of "Advance."
- Advance = move forward, proceed.
- The opposite (antonym) $\Rightarrow$ Retreat = move back, withdraw.
Step 3: Eliminate the options.
(A) Advent = arrival/beginning (not opposite of advance).
(B) Progress = move forward (synonym of advance).
(C) Retreat = move back/withdraw $\Rightarrow$ correct antonym.
(D) Loan = lending of money (irrelevant meaning).
\[
\boxed{\text{Retreat}}
\]
Fish : Shoal :: Lion : _________
Select the correct option to complete the analogy.
Two soils of permeabilities \( k_1 \) and \( k_2 \) are placed in a horizontal flow apparatus, as shown in the figure. For Soil 1, \( L_1 = 50 \, {cm} \), and \( k_1 = 0.055 \, {cm/s} \); for Soil 2, \( L_2 = 30 \, {cm} \), and \( k_2 = 0.035 \, {cm/s} \). The cross-sectional area of the horizontal pipe is 100 cm², and the head difference (\( \Delta h \)) is 150 cm. The discharge (in cm³/s) through the soils is ........ (rounded off to 2 decimal places).

The most suitable test for measuring the permeability of clayey soils in the laboratory is ___________.
 
Consider the beam ACDEB given in the figure. Which of the following statements is/are correct:

The figures, I, II, and III are parts of a sequence. Which one of the following options comes next in the sequence as IV?
