Tag: planet earth
Questions Related to planet earth
Which of the following is/are damages caused by acid rain?
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It depletes the soil of nutrients, increases the acidity of the soil and reduces fertility.
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It destroys marine life due to change in pH of the environment.
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It causes material damage.
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All of the above
The damages caused by acid rain are:
- It depletes the soil of nutrients, increases the acidity of the soil and reduces fertility, as the ideal conditions for the growth of trees are lost.
- It destroys marine life due to change in pH of the environment, making it unfit for habitation by aquatic animals.
- It causes material damage such as corrosion of marbles.
Which of the following reactions is not correct for the formation of acid rain?
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$\displaystyle { N } _{ 2 }+{ O } _{ 2 }\rightarrow 2NO$
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$\displaystyle 2NO+{ O } _{ 2 }\rightarrow { 2NO } _{ 2 }$
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$\displaystyle { H } _{ 2 }O+2{ NO } _{ 2 }\rightarrow { HNO } _{ 2 }+{ HNO } _{ 3 }$
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$\displaystyle NO+{ O } _{ 2 }\rightarrow { NO } _{ 2 }$
$\displaystyle NO+{ O } _{ 2 }\rightarrow { NO } _{ 2 }$ is the incorrect equation as it is not balanced.
What is the pH of acid rain?
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5.8
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5.5
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4.2
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3.8
Suspended particulate matter like __________ emitted from industries causes yellowing of marble.
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dust particles
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acidic gases
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soot particles
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all of the above
Industries like Mathura Oil refinery near Agra emits certain suspended particulate matter like soot particles. This results in yellowing of marble of the monument.
Which of the following is correct about acid rain?
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Rain which is acidic in nature
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Rain which is basic in nature
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Rain which is neutral in nature
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All of the above
When oxides of sulphur and nitrogen which are emitted by the industries, react with the moisture present in the atmosphere, they form acids.
Which of the following statements is true about acid rain?
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Acid rain will erode marble statues
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Acid rain can change the pH of lakes and streams
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Acid rain can be formed from carbon dioxide
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Acid rain creates holes in the ozone layer
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All of the above
Acid rain is caused due to oxides of nitrogen and sulphur reacting with water, oxygen, carbon dioxide, and other chemicals present high in the atmosphere resulting into acidic pollutants.
Ozone is an air pollutant that is a major component of:
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smog
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smoke
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dust
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dirt particles
At ground level, ozone is an air pollutant that is a major component of smog which is dangerous for both humans and plants. Long-term ozone exposure has also been shown to reduce life expectancy.
Acid rain is caused by emissions of:
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sulphur dioxide
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nitrogen dioxide
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both $A$ and $B$
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hydrogen
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
Over a number of years the average pH of a stream changes from a pH of 6.9 to a pH of 5.9 due to acid rain. Which statement is true about the pH of the stream?
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The pH of the stream now is one times more acidic than it was years ago
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The stream now has 10 times more hydroxide ions than it did years ago
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The pH of the stream is now 10 times more acidic than it was years ago
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The stream is more basic now than it was years ago
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The concentration of hydronium ion in the stream has decreased over the years
Over a number of years the average pH of a stream changes from a pH of 6.9 to a pH of 5.9 due to acid rain. The pH of the stream is now 10 times more acidic than it was years ago.
Years ago, the pH was 6.9. The present day pH is 5.9. The change in pH is
$\displaystyle = \Delta pH= 5.9-6.9 = -1$
The corresponding change in hydrogen ion concentration is:
$\displaystyle 10^{-\Delta pH}= 10^{-(-1)} = 10$
Which of the following is a major natural cause for acid rain?
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Earthquakes
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Cyclones
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Volcanoes
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Thunderstorm
The major natural causal agent for acid rain is volcanic emissions. Volcanoes emit acid producing gases to create higher than normal amounts of acid rain or any other form of precipitation such as fog and snow to an extent of affecting vegetation cover and health of residents within the surrounding.