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Punjab Water Supply & Sanitation: practice questions and mock tests

This section holds 84 practice questions for Punjab Water Supply & Sanitation, arranged in 3 topics โ€” the largest are Water Supply & Sanitation (40), General Knowledge (34) and Mixed and previous-year-pattern practice (10).

53 of these are written only for this post. The other 31 are shared with exams that test the same syllabus, mainly Canal Patwari, ASI and Constable, so practice here also counts towards those papers.

Below you will find the topic outline, sample questions with explanations and the official website. Dates, eligibility and marking rules change, so confirm them in the latest official notification.

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Punjab Water Supply & Sanitation: Practice MCQs and Mock Tests

This page brings together the PunjabExams practice set for Punjab Water Supply & Sanitation: 84 multiple-choice questions, each with a keyed answer and a short explanation, arranged into 3 topic groups. You can practise topic by topic, take a timed 50-question mock or revise quickly in question-and-answer mode. Practice is free and needs no sign-up.

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Exam-specific and shared questions

Of the 84 distinct questions in this set, 53 are written specifically for Water Supply and 31 are common general-studies questions (reasoning, aptitude, general knowledge, Punjab GK, language and computer basics). Punjab recruitment papers test these common areas at a similar level, so the same reviewed question is used in every exam set where that topic is on the syllabus, rather than being rewritten with small changes.

Exam sets that share the most questions with this one:

What the Water Supply question set covers

TopicQuestions
Water Supply & Sanitation40
General Knowledge34
Mixed and previous-year-pattern practice10

Key points for Water Supply aspirants

  • Potable supply + chlorination.
  • Rural piped water is DWSS/Jal Shakti.
  • Do not confuse with canal irrigation posts.

Sample Water Supply questions with answers

A few questions from this set, with the answer and explanation shown. The full set opens in practice mode.

  1. Q1. 'Cavitation' in pumps is caused by:

    • (a) Excess lubrication
    • (b) Cold weather
    • (c) Collapse of vapour bubbles at low pressure
    • (d) High voltage

    Answer: (c) Collapse of vapour bubbles at low pressure. Low suction pressure causes vapour bubbles that collapse and damage the impeller.

  2. Q2. Distributary takes off from?

    • (a) A river directly
    • (b) A tube-well
    • (c) A drain
    • (d) A main or branch canal

    Answer: (d) A main or branch canal. The correct answer is A main or branch canal.

  3. Q3. Eastern rivers under IWT for India include?

    • (a) Sutlej, Beas and Ravi
    • (b) Indus, Jhelum and Chenab
    • (c) Sutlej, Jhelum and Ravi
    • (d) Chenab, Beas and Ravi

    Answer: (a) Sutlej, Beas and Ravi. Eastern rivers to India in the treaty scheme.

  4. Q4. Galvanised iron pipes are coated with:

    • (a) Zinc
    • (b) Copper
    • (c) Lead
    • (d) Tin

    Answer: (a) Zinc. Galvanising coats iron with zinc to prevent corrosion.

  5. Q5. A rising main in water supply is?

    • (a) A pumping main to a reservoir
    • (b) A sewer
    • (c) A canal
    • (d) A drain

    Answer: (a) A pumping main to a reservoir. The correct answer is A pumping main to a reservoir or tower.

  6. Q6. An air valve in pipelines is provided to:

    • (a) Measure turbidity
    • (b) Release trapped air at high points
    • (c) Add oxygen to water
    • (d) Increase pressure

    Answer: (b) Release trapped air at high points. Air valves release accumulated air that would block flow.

How to use this practice set

  1. Read the latest official notification and syllabus for Water Supply first, so you know the paper pattern and marking.
  2. Work through one topic at a time, starting with Water Supply & Sanitation, and read the explanation for every question you get wrong.
  3. Take a timed 50-question mock once a week and track your accuracy, not just your score.
  4. Keep a short notebook of facts you missed and revise it before each mock.

Official information

Dates, eligibility, syllabus and answer keys are decided by the recruiting body named in the official advertisement for this post. Always confirm them in the latest official notification. PunjabExams is an independent practice site and is not connected with any recruiting body.

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Last reviewed 29 October 2026. Questions are original, unofficial practice items; if you spot an error, use Report / Suggest fix in practice mode. See our editorial policy.