Step 1: Analyze the passage.
The passage describes how waterborne diseases, particularly cholera, typhoid, diphtheria, and tuberculosis, lead to deaths. It mentions that children are especially vulnerable and that clean drinking water and proper sewage systems are essential for public health. It also highlights that the provision of clean drinking water and sewage separation is a major contribution to public health.
Step 2: Analyze the options.
- (A) The passage mentions that children are particularly vulnerable to waterborne diseases, so this statement is incorrect, meaning it is not true according to the passage.
- (B) The passage states that the infant mortality rate is high in some of the poorest countries, which aligns with this option.
- (C) The passage clearly implies that the provision of sewage and drinking water should be separated, which is in line with this option.
- (D) The passage mentions that public sanitation was recognized as the greatest medical breakthrough, implying that sanitation was not previously given due importance, making this option incorrect.
Step 3: Conclusion.
The statements (A) and (D) are NOT TRUE according to the passage.
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?

Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is: