Statements:
'A': Carbon dioxide is not always a pollutant.
'R': Plants require carbon monoxide for growth that they get from carbon dioxide.
Analyzing Assertion A: Carbon Dioxide Status
The statement 'A' claims that Carbon dioxide ($CO_2$) is not always a pollutant. Carbon dioxide is a natural component of Earth's atmosphere and is essential for plant life through photosynthesis. While excessive concentrations contribute to climate change, it is not universally classified as a pollutant in all contexts, especially at natural levels. Therefore, statement 'A' is considered true.
Evaluating Reason R: Plant Needs
The statement 'R' asserts that plants require Carbon monoxide ($CO$) for growth and obtain it from Carbon dioxide ($CO_2$). This is incorrect. Plants require Carbon dioxide ($CO_2$) for photosynthesis, the process of creating their food. Carbon monoxide ($CO$) is a toxic gas and is not required by plants for growth. Plants do not 'get' $CO_2$ from $CO$. Thus, statement 'R' is false.
Conclusion on Statements
Based on the analysis:
- Assertion 'A' is true.
- Reason 'R' is false.
This corresponds to the option where statement 'A' is true, and statement 'R' is false.
Similar Questions
- Acid rain is mainly caused due to the presence of which two gases in the atmosphere?
- Which of the following production activities is the largest emitter of $CO_{2}$?
- Which of the following gases is emitted by swamps and paddy fields?
- Which of the following DOES NOT produce Greenhouse gases?
- Which of the following in polluted air causes Hay fever?
- Which of the following gas is not related to acid rain?
- Which of the following chemicals/gases is/are responsible for causing the greenhouse effect?
- Which of the following mainly causes the depletion of the ozone layer?
- Since 2011 the supreme court banned the manufacture, sale and use of which pesticide that causes hazardous effects to human life as well as the environment?
- Which of the following is NOT a greenhouse gas?
Important Questions from Environmental pollution
Which one of the following is a major environmental issue in eastern Canada?
One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants which are bad for human health when inhaled, like
1) Nitrogen oxides (NO x)
2) Carbon monoxide (CO)
3) Carbon dioxide (CO 2)
4) Benzene
Which of the above pollutants are not tolerated by human beings even at very low levels?Which of the following substances are harmful for health if present in food items?
1) Pesticide residues
2) Lead
3) Metanil yellow
4) Mercury
Select the correct answer using the code given below:
Which of the commonly used household item(s) release Bisphenol A (BPA) which is an endocrine disruptor and bad for human health?
1. Steel utensils
2. Plastic coffee mugs
3. Aluminium utensils
4. Plastic water storage bottles
Select the correct answer using the code given below:Which one of the following is a cause of acid rains?
