All Exams >
JAMB >
Chemistry for JAMB >
All Questions
All questions of Nitrogen for JAMB Exam
What is the primary role of denitrifying bacteria in the nitrogen cycle?- a)Conversion of nitrate to atmospheric nitrogen
- b)Conversion of ammonia to nitrate
- c)Conversion of atmospheric nitrogen to ammonia
- d)Conversion of nitrite to ammonia
Correct answer is option 'A'. Can you explain this answer?
What is the primary role of denitrifying bacteria in the nitrogen cycle?
a)
Conversion of nitrate to atmospheric nitrogen
b)
Conversion of ammonia to nitrate
c)
Conversion of atmospheric nitrogen to ammonia
d)
Conversion of nitrite to ammonia
|
Moses Friday answered |
A
How does excessive nitrogen runoff from agricultural activities affect aquatic ecosystems?- a)It promotes algal blooms and oxygen depletion.
- b)It increases biodiversity and species richness.
- c)It reduces water acidity and increases fish populations.
- d)It enhances the growth of coral reefs.
Correct answer is option 'A'. Can you explain this answer?
How does excessive nitrogen runoff from agricultural activities affect aquatic ecosystems?
a)
It promotes algal blooms and oxygen depletion.
b)
It increases biodiversity and species richness.
c)
It reduces water acidity and increases fish populations.
d)
It enhances the growth of coral reefs.
|
Adenike Igboanugo answered |
Impact of Nitrogen Runoff on Aquatic Ecosystems
Excessive nitrogen runoff from agricultural activities has significant consequences for aquatic ecosystems. The correct answer to the question is option 'A': it promotes algal blooms and oxygen depletion. Here's a detailed explanation:
Understanding Nitrogen Runoff
- Nitrogen fertilizers are commonly used in agriculture to enhance crop growth.
- When it rains, excess nitrogen can wash into nearby rivers, lakes, and oceans.
Algal Blooms
- The influx of nitrogen acts as a nutrient that stimulates the rapid growth of algae, leading to algal blooms.
- These blooms can cover the water surface, blocking sunlight from reaching aquatic plants.
Oxygen Depletion
- As algae die off, they decompose, a process that consumes dissolved oxygen in the water.
- This oxygen depletion can create "dead zones," where aquatic life cannot survive due to low oxygen levels.
Consequences for Aquatic Life
- Fish and other marine organisms may die or migrate to other areas, leading to reduced biodiversity.
- The disruption of food chains can have long-term impacts on the ecosystem, affecting not just fish but also birds and mammals that rely on aquatic life.
Conclusion
In summary, excessive nitrogen runoff from agriculture leads to algal blooms and subsequent oxygen depletion, creating detrimental effects on aquatic ecosystems. Addressing nitrogen runoff is crucial for maintaining healthy water bodies and preserving biodiversity.
Excessive nitrogen runoff from agricultural activities has significant consequences for aquatic ecosystems. The correct answer to the question is option 'A': it promotes algal blooms and oxygen depletion. Here's a detailed explanation:
Understanding Nitrogen Runoff
- Nitrogen fertilizers are commonly used in agriculture to enhance crop growth.
- When it rains, excess nitrogen can wash into nearby rivers, lakes, and oceans.
Algal Blooms
- The influx of nitrogen acts as a nutrient that stimulates the rapid growth of algae, leading to algal blooms.
- These blooms can cover the water surface, blocking sunlight from reaching aquatic plants.
Oxygen Depletion
- As algae die off, they decompose, a process that consumes dissolved oxygen in the water.
- This oxygen depletion can create "dead zones," where aquatic life cannot survive due to low oxygen levels.
Consequences for Aquatic Life
- Fish and other marine organisms may die or migrate to other areas, leading to reduced biodiversity.
- The disruption of food chains can have long-term impacts on the ecosystem, affecting not just fish but also birds and mammals that rely on aquatic life.
Conclusion
In summary, excessive nitrogen runoff from agriculture leads to algal blooms and subsequent oxygen depletion, creating detrimental effects on aquatic ecosystems. Addressing nitrogen runoff is crucial for maintaining healthy water bodies and preserving biodiversity.
What is the primary source of nitrogen for the nitrogen cycle?- a)Nitrogen gas (N2) in the atmosphere
- b)Nitrate ions (NO3-) in the soil
- c)Ammonium ions (NH4+) in the soil
- d)Nitrite ions (NO2-) in the soil
Correct answer is option 'A'. Can you explain this answer?
What is the primary source of nitrogen for the nitrogen cycle?
a)
Nitrogen gas (N2) in the atmosphere
b)
Nitrate ions (NO3-) in the soil
c)
Ammonium ions (NH4+) in the soil
d)
Nitrite ions (NO2-) in the soil
|
Ekene Nnamdi answered |
Primary Source of Nitrogen in the Nitrogen Cycle
The nitrogen cycle is a crucial ecological process that recycles nitrogen in various forms, allowing it to be utilized by living organisms. The primary source of nitrogen in this cycle is:
- Nitrogen Gas (N2) in the Atmosphere
Nitrogen gas (N2) constitutes about 78% of the Earth's atmosphere and serves as the main reservoir of nitrogen.
- Importance of Nitrogen Gas
- Inert Nature: Nitrogen gas is inert and does not readily react with other substances. This stability means it requires specific processes, such as nitrogen fixation, to convert it into usable forms for living organisms.
- Nitrogen Fixation: Certain bacteria and archaea, some of which are found in the root nodules of legumes, can convert atmospheric N2 into ammonia (NH3) through nitrogen fixation. This process is essential as it transforms unusable nitrogen into forms that plants can absorb.
Other Forms of Nitrogen
While nitrate ions (NO3-), ammonium ions (NH4+), and nitrite ions (NO2-) are important in the nitrogen cycle, they are derived from the conversion of nitrogen gas or from the decomposition of organic matter.
- Nitrate (NO3-): Produced through nitrification, where ammonia is oxidized by bacteria.
- Ammonium (NH4+): Can form from the breakdown of organic matter or through nitrogen fixation.
- Nitrite (NO2-): An intermediate in the nitrification process, converting ammonia to nitrate.
Conclusion
In summary, nitrogen gas (N2) in the atmosphere is the primary source of nitrogen for the nitrogen cycle, providing the foundational element necessary for the subsequent transformations that support life on Earth.
The nitrogen cycle is a crucial ecological process that recycles nitrogen in various forms, allowing it to be utilized by living organisms. The primary source of nitrogen in this cycle is:
- Nitrogen Gas (N2) in the Atmosphere
Nitrogen gas (N2) constitutes about 78% of the Earth's atmosphere and serves as the main reservoir of nitrogen.
- Importance of Nitrogen Gas
- Inert Nature: Nitrogen gas is inert and does not readily react with other substances. This stability means it requires specific processes, such as nitrogen fixation, to convert it into usable forms for living organisms.
- Nitrogen Fixation: Certain bacteria and archaea, some of which are found in the root nodules of legumes, can convert atmospheric N2 into ammonia (NH3) through nitrogen fixation. This process is essential as it transforms unusable nitrogen into forms that plants can absorb.
Other Forms of Nitrogen
While nitrate ions (NO3-), ammonium ions (NH4+), and nitrite ions (NO2-) are important in the nitrogen cycle, they are derived from the conversion of nitrogen gas or from the decomposition of organic matter.
- Nitrate (NO3-): Produced through nitrification, where ammonia is oxidized by bacteria.
- Ammonium (NH4+): Can form from the breakdown of organic matter or through nitrogen fixation.
- Nitrite (NO2-): An intermediate in the nitrification process, converting ammonia to nitrate.
Conclusion
In summary, nitrogen gas (N2) in the atmosphere is the primary source of nitrogen for the nitrogen cycle, providing the foundational element necessary for the subsequent transformations that support life on Earth.
Which of the following is NOT a component of the nitrogen cycle?- a)Nitrogen fixation
- b)Nitrification
- c)Denitrification
- d)Photosynthesis
Correct answer is option 'D'. Can you explain this answer?
Which of the following is NOT a component of the nitrogen cycle?
a)
Nitrogen fixation
b)
Nitrification
c)
Denitrification
d)
Photosynthesis
|
|
Munirat Balogun answered |
Understanding the Nitrogen Cycle
The nitrogen cycle is a crucial ecological process that describes the movement of nitrogen through the atmosphere, soil, and living organisms. It consists of several key components that work together to ensure the availability of nitrogen in different forms.
Components of the Nitrogen Cycle
Why Photosynthesis is NOT Part of the Nitrogen Cycle
Photosynthesis is a separate process where plants convert sunlight, carbon dioxide, and water into glucose and oxygen. While it is vital for energy production and forms the base of the food chain, it does not involve the transformation or cycling of nitrogen. Instead, it focuses on carbon and energy transfer in ecosystems.
Conclusion
In summary, the correct answer to the question is option 'D' (Photosynthesis), as it is not a component of the nitrogen cycle but rather a distinct process related to carbon and energy in plants. Understanding these differences is essential for studying ecological interactions and nutrient cycles.
The nitrogen cycle is a crucial ecological process that describes the movement of nitrogen through the atmosphere, soil, and living organisms. It consists of several key components that work together to ensure the availability of nitrogen in different forms.
Components of the Nitrogen Cycle
- Nitrogen Fixation: This process converts atmospheric nitrogen (N2) into ammonia (NH3) or related compounds, making nitrogen accessible to living organisms. It is primarily carried out by certain bacteria and archaea.
- Nitrification: This is a two-step process where ammonia is first oxidized to nitrites (NO2-) by bacteria, and then nitrites are further oxidized to nitrates (NO3-). Nitrates are a form of nitrogen that plants can absorb and use for growth.
- Denitrification: This process involves the conversion of nitrates back into nitrogen gas (N2), which is released into the atmosphere. It is carried out by denitrifying bacteria, completing the nitrogen cycle.
Why Photosynthesis is NOT Part of the Nitrogen Cycle
Photosynthesis is a separate process where plants convert sunlight, carbon dioxide, and water into glucose and oxygen. While it is vital for energy production and forms the base of the food chain, it does not involve the transformation or cycling of nitrogen. Instead, it focuses on carbon and energy transfer in ecosystems.
Conclusion
In summary, the correct answer to the question is option 'D' (Photosynthesis), as it is not a component of the nitrogen cycle but rather a distinct process related to carbon and energy in plants. Understanding these differences is essential for studying ecological interactions and nutrient cycles.
What is the process by which nitrogen gas (N2) is converted into ammonia (NH3)?- a)Nitrogen fixation
- b)Nitrification
- c)Denitrification
- d)Assimilation
Correct answer is option 'A'. Can you explain this answer?
What is the process by which nitrogen gas (N2) is converted into ammonia (NH3)?
a)
Nitrogen fixation
b)
Nitrification
c)
Denitrification
d)
Assimilation
|
Sun Ray Institute answered |
Nitrogen fixation is the conversion of atmospheric nitrogen gas (N2) into ammonia (NH3) by certain nitrogen-fixing bacteria or through industrial processes.
Which human activity has contributed significantly to the disruption of the nitrogen cycle?- a)Deforestation
- b)Industrial pollution
- c)Overfishing
- d)Carbon emissions
Correct answer is option 'B'. Can you explain this answer?
Which human activity has contributed significantly to the disruption of the nitrogen cycle?
a)
Deforestation
b)
Industrial pollution
c)
Overfishing
d)
Carbon emissions
|
|
Sun Ray Institute answered |
Industrial pollution, especially from the burning of fossil fuels and industrial processes, releases nitrogen oxides into the atmosphere, leading to imbalances in the nitrogen cycle.
Which of the following is the chemical formula for ammonia?- a)NH3
- b)NH4
- c)N2H4
- d)N2H6
Correct answer is option 'A'. Can you explain this answer?
Which of the following is the chemical formula for ammonia?
a)
NH3
b)
NH4
c)
N2H4
d)
N2H6
|
|
Sun Ray Institute answered |
Ammonia is represented by the chemical formula NH3, which consists of one nitrogen atom bonded to three hydrogen atoms.
How does the excessive use of synthetic fertilizers affect the nitrogen cycle?- a)It accelerates nitrogen fixation.
- b)It promotes denitrification.
- c)It disrupts the balance of nitrification.
- d)It has no impact on the nitrogen cycle.
Correct answer is option 'B'. Can you explain this answer?
How does the excessive use of synthetic fertilizers affect the nitrogen cycle?
a)
It accelerates nitrogen fixation.
b)
It promotes denitrification.
c)
It disrupts the balance of nitrification.
d)
It has no impact on the nitrogen cycle.
|
|
Sun Ray Institute answered |
Excessive use of synthetic fertilizers can lead to an increase in nitrogen levels in the soil, promoting denitrification and causing the loss of usable nitrogen from the ecosystem.
The reaction of ammonia with an acid forms a salt. What is the general name for this type of reaction?- a)Acid-base reaction
- b)Oxidation-reduction reaction
- c)Combustion reaction
- d)Polymerization reaction
Correct answer is option 'A'. Can you explain this answer?
The reaction of ammonia with an acid forms a salt. What is the general name for this type of reaction?
a)
Acid-base reaction
b)
Oxidation-reduction reaction
c)
Combustion reaction
d)
Polymerization reaction
|
|
Sun Ray Institute answered |
The reaction between ammonia (a base) and an acid results in the formation of a salt, which is a characteristic of an acid-base reaction.
Which group of bacteria is primarily responsible for the process of nitrification?- a)Denitrifying bacteria
- b)Nitrogen-fixing bacteria
- c)Ammonifying bacteria
- d)Nitrifying bacteria
Correct answer is option 'D'. Can you explain this answer?
Which group of bacteria is primarily responsible for the process of nitrification?
a)
Denitrifying bacteria
b)
Nitrogen-fixing bacteria
c)
Ammonifying bacteria
d)
Nitrifying bacteria
|
|
Sun Ray Institute answered |
Nitrifying bacteria are responsible for the conversion of ammonia (NH3) into nitrite (NO2-) and then into nitrate (NO3-) during nitrification.
Which group of organisms is responsible for the process of nitrification in the nitrogen cycle?- a)Plants
- b)Animals
- c)Decomposers
- d)Nitrifying bacteria
Correct answer is option 'D'. Can you explain this answer?
Which group of organisms is responsible for the process of nitrification in the nitrogen cycle?
a)
Plants
b)
Animals
c)
Decomposers
d)
Nitrifying bacteria
|
|
Sun Ray Institute answered |
Nitrifying bacteria are responsible for the process of nitrification, which involves the conversion of ammonia (NH3) to nitrite (NO2-) and further to nitrate (NO3-).
Ammonia can act as a reducing agent in chemical reactions. Which of the following statements is true regarding its reducing properties?- a)Ammonia gains electrons during the reaction.
- b)Ammonia loses electrons during the reaction.
- c)Ammonia donates protons during the reaction.
- d)Ammonia accepts protons during the reaction.
Correct answer is option 'A'. Can you explain this answer?
Ammonia can act as a reducing agent in chemical reactions. Which of the following statements is true regarding its reducing properties?
a)
Ammonia gains electrons during the reaction.
b)
Ammonia loses electrons during the reaction.
c)
Ammonia donates protons during the reaction.
d)
Ammonia accepts protons during the reaction.
|
|
Sun Ray Institute answered |
In a redox reaction, a reducing agent gains electrons, and ammonia acts as a reducing agent by accepting electrons from another species.
What is the major source of nitrogen oxide emissions in the environment?- a)Volcanic activity
- b)Agricultural activities
- c)Forest fires
- d)Human respiratory systems
Correct answer is option 'B'. Can you explain this answer?
What is the major source of nitrogen oxide emissions in the environment?
a)
Volcanic activity
b)
Agricultural activities
c)
Forest fires
d)
Human respiratory systems
|
|
Sun Ray Institute answered |
Agricultural activities, including the use of synthetic fertilizers and livestock manure, contribute significantly to nitrogen oxide emissions in the environment.
What is the shape of an ammonia molecule?- a)Linear
- b)Trigonal planar
- c)Tetrahedral
- d)Octahedral
Correct answer is option 'C'. Can you explain this answer?
What is the shape of an ammonia molecule?
a)
Linear
b)
Trigonal planar
c)
Tetrahedral
d)
Octahedral
|
|
Sun Ray Institute answered |
An ammonia molecule has a tetrahedral shape due to the presence of four electron pairs around the central nitrogen atom.
Which of the following is not a step in the nitrogen cycle?- a)Nitrogen fixation
- b)Nitrification
- c)Photosynthesis
- d)Denitrification
Correct answer is option 'C'. Can you explain this answer?
Which of the following is not a step in the nitrogen cycle?
a)
Nitrogen fixation
b)
Nitrification
c)
Photosynthesis
d)
Denitrification
|
|
Sun Ray Institute answered |
Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen. It does not directly involve the nitrogen cycle.
How does the nitrogen cycle contribute to ecosystem sustainability?- a)It regulates the pH of the soil.
- b)It promotes the growth of beneficial bacteria.
- c)It ensures the availability of essential nutrients for plants.
- d)It prevents the release of greenhouse gases.
Correct answer is option 'C'. Can you explain this answer?
How does the nitrogen cycle contribute to ecosystem sustainability?
a)
It regulates the pH of the soil.
b)
It promotes the growth of beneficial bacteria.
c)
It ensures the availability of essential nutrients for plants.
d)
It prevents the release of greenhouse gases.
|
|
Sun Ray Institute answered |
The nitrogen cycle plays a crucial role in ensuring the availability of essential nutrients, primarily nitrogen, for plant growth. This, in turn, sustains the balance and productivity of ecosystems.
Which of the following is not a commercial use of ammonia?- a)Fertilizer production
- b)Cleaning agent
- c)Bleaching agent
- d)Food preservative
Correct answer is option 'C'. Can you explain this answer?
Which of the following is not a commercial use of ammonia?
a)
Fertilizer production
b)
Cleaning agent
c)
Bleaching agent
d)
Food preservative
|
|
Sun Ray Institute answered |
While ammonia has various commercial uses, it is not commonly used as a bleaching agent.
Which of the following is a human activity that contributes to an imbalance in the nitrogen cycle?- a)Plant photosynthesis
- b)Deforestation
- c)Volcanic eruptions
- d)Natural decomposition of organic matter
Correct answer is option 'B'. Can you explain this answer?
Which of the following is a human activity that contributes to an imbalance in the nitrogen cycle?
a)
Plant photosynthesis
b)
Deforestation
c)
Volcanic eruptions
d)
Natural decomposition of organic matter
|
|
Sun Ray Institute answered |
Deforestation disrupts the nitrogen cycle by reducing the number of plants and trees that absorb nitrogen from the soil, leading to increased nitrogen runoff and potential pollution.
Which of the following is an example of biological nitrogen fixation?- a)Lightning strikes
- b)Volcanic eruptions
- c)Industrial processes
- d)Rhizobium bacteria in legume nodules
Correct answer is option 'D'. Can you explain this answer?
Which of the following is an example of biological nitrogen fixation?
a)
Lightning strikes
b)
Volcanic eruptions
c)
Industrial processes
d)
Rhizobium bacteria in legume nodules
|
|
Sun Ray Institute answered |
Biological nitrogen fixation occurs when certain bacteria, such as Rhizobium, form symbiotic relationships with leguminous plants and convert atmospheric nitrogen into a usable form, such as ammonia.
Ammonia is commonly used in which of the following industries?- a)Textile
- b)Petroleum
- c)Automotive
- d)Aerospace
Correct answer is option 'A'. Can you explain this answer?
Ammonia is commonly used in which of the following industries?
a)
Textile
b)
Petroleum
c)
Automotive
d)
Aerospace
|
|
Sun Ray Institute answered |
Ammonia is extensively used in the textile industry for dyeing and printing processes.
Ammonia is commonly used as a refrigerant in cooling systems. Which property of ammonia makes it suitable for this purpose?- a)Low boiling point
- b)High density
- c)High flammability
- d)Low toxicity
Correct answer is option 'A'. Can you explain this answer?
Ammonia is commonly used as a refrigerant in cooling systems. Which property of ammonia makes it suitable for this purpose?
a)
Low boiling point
b)
High density
c)
High flammability
d)
Low toxicity
|
|
Sun Ray Institute answered |
Ammonia has a relatively low boiling point (-33.34 degrees Celsius) compared to many other substances, making it an effective refrigerant.
In which form does nitrogen primarily enter the food chain?- a)Nitrate
- b)Nitrite
- c)Ammonia
- d)Atmospheric nitrogen
Correct answer is option 'C'. Can you explain this answer?
In which form does nitrogen primarily enter the food chain?
a)
Nitrate
b)
Nitrite
c)
Ammonia
d)
Atmospheric nitrogen
|
|
Sun Ray Institute answered |
Ammonia (NH3) is the form in which nitrogen primarily enters the food chain. It is produced through ammonification, which is the breakdown of organic nitrogen compounds by decomposers.
Ammonia is primarily produced through which process?- a)Combustion
- b)Oxidation
- c)Haber-Bosch process
- d)Polymerization
Correct answer is option 'C'. Can you explain this answer?
Ammonia is primarily produced through which process?
a)
Combustion
b)
Oxidation
c)
Haber-Bosch process
d)
Polymerization
|
|
Sun Ray Institute answered |
Ammonia is commonly produced industrially using the Haber-Bosch process, which involves the reaction of nitrogen and hydrogen gases in the presence of a catalyst.
Which process converts atmospheric nitrogen (N2) into a form that plants can use?- a)Nitrogen fixation
- b)Ammonification
- c)Nitrification
- d)Denitrification
Correct answer is option 'A'. Can you explain this answer?
Which process converts atmospheric nitrogen (N2) into a form that plants can use?
a)
Nitrogen fixation
b)
Ammonification
c)
Nitrification
d)
Denitrification
|
|
Sun Ray Institute answered |
Nitrogen fixation is the conversion of atmospheric nitrogen into a form that plants can use, typically through the action of nitrogen-fixing bacteria.
Which of the following properties describes ammonia as a base?- a)It turns red litmus paper blue.
- b)It reacts with metals to produce hydrogen gas.
- c)It is a good conductor of electricity.
- d)It has a pungent odor.
Correct answer is option 'A'. Can you explain this answer?
Which of the following properties describes ammonia as a base?
a)
It turns red litmus paper blue.
b)
It reacts with metals to produce hydrogen gas.
c)
It is a good conductor of electricity.
d)
It has a pungent odor.
|
|
Sun Ray Institute answered |
Ammonia acts as a base because it can accept a proton (H+) from an acid, and one of the characteristic properties of bases is their ability to turn red litmus paper blue.
Which process converts organic nitrogen compounds into ammonia?- a)Nitrification
- b)Denitrification
- c)Nitrogen fixation
- d)Ammonification
Correct answer is option 'D'. Can you explain this answer?
Which process converts organic nitrogen compounds into ammonia?
a)
Nitrification
b)
Denitrification
c)
Nitrogen fixation
d)
Ammonification
|
|
Sun Ray Institute answered |
Ammonification is the process in which organic nitrogen compounds, such as dead plants and animals, are broken down by decomposers into ammonia (NH3).
How does the burning of fossil fuels contribute to nitrogen cycle disruption?- a)It enhances nitrogen fixation rates.
- b)It increases the release of nitrogen gas into the atmosphere.
- c)It accelerates the process of nitrification.
- d)It reduces the amount of nitrogen in the atmosphere.
Correct answer is option 'B'. Can you explain this answer?
How does the burning of fossil fuels contribute to nitrogen cycle disruption?
a)
It enhances nitrogen fixation rates.
b)
It increases the release of nitrogen gas into the atmosphere.
c)
It accelerates the process of nitrification.
d)
It reduces the amount of nitrogen in the atmosphere.
|
|
Sun Ray Institute answered |
The burning of fossil fuels releases nitrogen oxides (NOx) into the atmosphere, which can eventually lead to increased nitrogen gas (N2) in the atmosphere, disrupting the balance of the nitrogen cycle.
What is the role of leguminous plants in the nitrogen cycle?- a)They fix nitrogen in the soil.
- b)They convert nitrate to nitrite.
- c)They release nitrogen gas into the atmosphere.
- d)They are not involved in the nitrogen cycle.
Correct answer is option 'A'. Can you explain this answer?
What is the role of leguminous plants in the nitrogen cycle?
a)
They fix nitrogen in the soil.
b)
They convert nitrate to nitrite.
c)
They release nitrogen gas into the atmosphere.
d)
They are not involved in the nitrogen cycle.
|
|
Sun Ray Institute answered |
Leguminous plants have a symbiotic relationship with nitrogen-fixing bacteria in their root nodules, allowing them to convert atmospheric nitrogen into forms that can be used by plants.
Which process releases nitrogen gas (N2) back into the atmosphere?- a)Nitrification
- b)Denitrification
- c)Nitrogen fixation
- d)Assimilation
Correct answer is option 'B'. Can you explain this answer?
Which process releases nitrogen gas (N2) back into the atmosphere?
a)
Nitrification
b)
Denitrification
c)
Nitrogen fixation
d)
Assimilation
|
|
Sun Ray Institute answered |
Denitrification is the process by which nitrate (NO3-) is converted back into nitrogen gas (N2) by denitrifying bacteria, thus returning nitrogen to the atmosphere.
Ammonia can form a weak acid when dissolved in water. What is the name of this acid?- a)Nitric acid
- b)Ammonium hydroxide
- c)Nitrous acid
- d)Ammonium nitrate
Correct answer is option 'B'. Can you explain this answer?
Ammonia can form a weak acid when dissolved in water. What is the name of this acid?
a)
Nitric acid
b)
Ammonium hydroxide
c)
Nitrous acid
d)
Ammonium nitrate
|
|
Sun Ray Institute answered |
When ammonia dissolves in water, it forms ammonium hydroxide, which is a weak acid.
Chapter doubts & questions for Nitrogen - Chemistry for JAMB 2025 is part of JAMB exam preparation. The chapters have been prepared according to the JAMB exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for JAMB 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Nitrogen - Chemistry for JAMB in English & Hindi are available as part of JAMB exam.
Download more important topics, notes, lectures and mock test series for JAMB Exam by signing up for free.
Chemistry for JAMB
213 videos|209 docs|162 tests
|
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup