Water- II: Disinfection of water is part of the Environment and Health section of PSM. Practise 16 exam-style MCQs for NEET PG, FMGE, INI-CET and NEET SS, each with the correct answer and a detailed explanation.
Water- II: Disinfection of water MCQs focus on getting the dose right — Horrock's apparatus readings and the bleaching powder needed to disinfect a given volume — the numerical side of water disinfection, high-yield NEET PG revision.
Sample Water- II: Disinfection of water MCQs with answers
Sample MCQ #1
What is the amount of beaching powder required to disinfect 455 l of 4, 5, 6 cup shows distinct blue colouration in Horrocks apparatus?
A2g
B6g
C8g
D4g
Show Answer & Explanation ▾
✓ Correct Answer: C. 8g
Given: Volume of water = 455 L 4, 5, 6 cup shows distinct blue coloration in Horrock's apparatus, indicating a minimum of 4 level spoons or 8gms of bleaching powder is required to give a blue colouration. Option a (2g) is too low for any of the free residual chlorine presence. Option b (6g) is also too low for the free residual chlorine presence. Option d (4g) also too low for the free residual chlorine presence. Hence option c is the most appropriate answer. In summary, the correct amount of beaching powder required to disinfect 455 L of water with a chlorine concentration of 4, 5, or 6 mg/L is approximately 8 grams. Reference -Park's Preventive and social medicine, 27th EDITION Pg 855
What you can practise in Water- II: Disinfection of water
16 Water- II: Disinfection of water MCQs on Water- II: Disinfection, water, Environment and Health — each with detailed explanations
Previous-year question practice across NEET PG, FMGE, INI-CET and NEET SS
Progress and performance tracking to measure retention
What do Water- II: Disinfection of water MCQs cover?
Water- II: Disinfection of water MCQs focus on getting the dose right — Horrock's apparatus readings and the bleaching powder needed to disinfect a given volume — the numerical side of water disinfection, high-yield NEET PG revision.
How many Water- II: Disinfection of water questions are there, and which exams do they cover?
MedLadder includes 16 curated MCQs for Water- II: Disinfection of water under PSM (Environment and Health), covering NEET PG, FMGE, INI-CET and NEET SS preparation.
