2nd Year Chemistry Chapter 17 TestWATER

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which level of water treatment is specifically responsible for the removal of physical debris?

   1. Primary treatment

   2. Secondary treatment

   3. Tertiary treatment

   4. Advanced treatment

2. During eutrophication, what is the direct physical consequence of the rapid growth of algae?

   1. It warms the water currents

   2. It blocks sunlight and reduces oxygen levels in the water

   3. It introduces toxic heavy metal salts

   4. It speeds up the natural water cycle

3. What are the major sources of pesticides and herbicides polluting water systems?

   1. Industrial chimneys and mining

   2. Agricultural runoff and domestic gardening

   3. Hospital waste and urban sewage

   4. Electrical transformers only

4. The formation of hydrogen bonds among water molecules is a direct result of what feature?

   1. High density

   2. Neutral pH

   3. Polarity of the water molecule

   4. High heat of vapourisation

5. Continuous water quality monitoring is crucial because it directly enables:

   1. Reduction of water usage charges

   2. Expansion of industrial land area

   3. Elimination of natural organic matter

   4. None of these

6. Into how many types are the sources of water pollution divided?

   1. One

   2. Two

   3. Three

   4. Four

7. Drainage from farms carries pollutants that contaminate:

   1. Surface water sources only

   2. Groundwater sources only

   3. Atmospheric moisture only

   4. Both surface and groundwater sources

8. Which property of water is primarily responsible for its ability to resist rapid temperature changes in large aquatic ecosystems?

   1. Amphoteric nature

   2. High specific heat

   3. The permanent dipole

   4. High redox potential

9. A violator of the Punjab Water Act, 2019 faces a maximum imprisonment penalty of:

   1. Up to 1 month

   2. Up to 3 months

   3. Up to 6 months

   4. Up to 1 year

10. When plastics break down into smaller particles, they:

    1. Dissolve safely into nutrients

    2. Persist in the environment for a very long period

    3. Turn into atmospheric gases quickly

    4. Sink to the Earth's core immediately