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Acidity in water is caused due to
  • a)
    Mineral acids
  • b)
    Free CO2
  • c)
    Iron sulfate and aluminium sulfate
  • d)
    All of the above
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Acidity in water is caused due toa)Mineral acidsb)Free CO2c)Iron sul...
Carbon dioxide is the most common cause of acidity in water. Photosynthesis, respiration, and decomposition all contribute to pH fluctuations due to their influences on CO2 levels. This increases H2CO3, which decreases pH. The effect is becoming more evident in oceanic pH studies over time.
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Acidity in water is caused due toa)Mineral acidsb)Free CO2c)Iron sul...
Causes of Acidity in Water

Acidity in water is caused due to various reasons such as:

1. Mineral acids: Mineral acids like sulfuric acid, hydrochloric acid, and nitric acid can enter the water bodies through industrial effluents, acid rain, and sewage.

2. Free CO2: Carbon dioxide, when dissolved in water, forms carbonic acid which can cause acidity in water.

3. Iron sulfate and aluminum sulfate: These are commonly used as coagulants in water treatment plants to remove suspended particles. However, if not removed properly, they can cause acidity in water.

Effects of Acidity in Water

Acidity in water can have various harmful effects on human health and the environment such as:

1. Corrosion of pipes and plumbing fixtures

2. Staining of clothes and surfaces

3. Damage to aquatic life and ecosystem

4. Increased risk of lead and other heavy metal poisoning

5. Skin irritation and other health problems

Conclusion

Acidity in water is a serious issue that needs to be addressed properly. It is caused by various factors and can have harmful effects on human health and the environment. Proper water treatment and management practices can help to reduce the acidity in water and ensure safe and clean water for all.
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Read the given passage carefully and select the best answer to each question out of the four given alternatives.Auroras, also known as northern lights, are a phenomenon that causes brilliant and colourful lights that shine in the sky. The bright green and red glow can be observed in areas closest to the earth’s poles, such as Alaska.While the phenomenon is extremely beautiful, the underlying geomagnetic disturbances that cause the lights can be very dangerous. The most remarkable of these events were recorded in 1859. A British astronomer named Richard Carrington was documenting sunspots when he observed two bright flashes that indicated a massive geomagnetic storm.The resulting magnetic pulse was so strong that it caused sparks to erupt from telegraph machines; shocking operators and in some cases setting their papers ablaze. This phenomenon became known as a Carrington event, after the astronomer who documented it. Though auroras are typically only seen close to the Polar Regions, during the Carrington Event, red auroras were seen as far as Hawaii and El Salvador.Auroras are caused by the earth’s magnetic poles reacting to solar particles. The electric current from the solar particles follow the earth’s magnetic fields and interact with the nitrogen and oxygen molecules in the atmosphere causing them to glow. The different gases emit different colours when they glow. Oxygen glows green and causes the most commonly seen auroras.The Carrington Event was different from a typical aurora because it was caused by a massive solar storm. In 1859, electronic technology was much more limited. The telegraphs that sparked during the incident were the height of telecommunications technology at the time.Q.______ glows green and causes the most commonly seen auroras.

Acidity in water is caused due toa)Mineral acidsb)Free CO2c)Iron sulfate and aluminium sulfated)All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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