default_background
✕

Find the best tutors and institutes for Class 12 Tuition

Find Best Class 12 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Q4:

Match the items given in column A and B:

 

Solution :

Given Categorical Data & Initial Setup

The standard ecological and environmental management technologies provided in the prompt represent matching items between pollution control methods/devices (Column A) and their respective target pollutants or environmental issues (Column B).

Column A (Control Device / Strategy) Column B (Target Pollutant / Environmental Issue)
(a) Catalytic converter (i) Particulate matter
(b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides
(c) Earmuffs (iii) High noise level
(d) Landfills (iv) Solid wastes

Step 1: Analysis of the Catalytic Converter

Catalytic converters are automobile exhaust control devices. They contain precious metals such as platinum ($Pt$), palladium ($Pd$), and rhodium ($Rh$) acting as catalysts. As engine exhaust passes through the catalytic converter, unburnt hydrocarbons are oxidized into carbon dioxide ($CO_2$) and water ($H_2O$). Simultaneously, toxic carbon monoxide ($CO$) and nitric oxide ($NO$) are reduced and oxidized to form carbon dioxide ($CO_2$) and nitrogen gas ($N_2$).
[Per the principles of RedOx chemistry in emissions control: $2CO + 2NO \xrightarrow{Catalyst} 2CO_2 + N_2$]
Match: (a) corresponds to (ii) Carbon monoxide and nitrogen oxides.

Step 2: Analysis of the Electrostatic Precipitator

An electrostatic precipitator is a highly efficient filtration device deployed primarily in thermal power plants. It operates by creating a high-voltage corona discharge that ionizes the surrounding air, releasing electrons. These electrons attach to particulate matter ($PM$) in the exhaust stream, imparting a net negative charge. The negatively charged dust particles are subsequently attracted to positively charged (grounded) collection plates, effectively removing up to $99\%$ of particulate matter.
[By the laws of electrostatics (Coulomb's Law), oppositely charged entities attract, allowing the mechanical separation of suspended solid particles from gaseous effluent].
Match: (b) corresponds to (i) Particulate matter.

Step 3: Analysis of Earmuffs

Earmuffs are primary personal protective equipment (PPE) utilized for acoustic protection. High-intensity sound waves (measured logarithmically in decibels, $dB$) characterize noise pollution, which can induce severe physiological and psychological pathologies, including permanent hearing threshold shift. Earmuffs attenuate environmental acoustic energy before it reaches the tympanic membrane.
Match: (c) corresponds to (iii) High noise level.

Step 4: Analysis of Landfills

Sanitary landfills represent a systematic engineering approach for the disposal of municipal solid waste (MSW). Wastes are compacted and placed in an excavated depression or trench, layered sequentially, and covered with impermeable soil/clay to mitigate biological vectors, malodor, and toxic leachate contamination of subterranean aquifers.
Match: (d) corresponds to (iv) Solid wastes.

Visual Logic Mapping

The following vector diagram precisely illustrates the correct stoichiometric and operational matches derived from our analysis.

Column A (a) Catalytic converter (b) Electrostatic precipitator (c) Earmuffs (d) Landfills Column B (i) Particulate matter (ii) CO and Nitrogen oxides (iii) High noise level (iv) Solid wastes

Final Solution: The scientifically accurate matching sequence is: (a) - (ii), (b) - (i), (c) - (iii), (d) - (iv).


More Questions from Class 12 Biology Environmental Issues EXERCISES


CBSE Solutions for Class 12 Biology Environmental Issues


Chapters in CBSE - Class 12 Biology


Top Tutors who teach Environmental Issues

(74)
Top Tutor
locationImg T Nagar, Chennai
experience 10 yrs of Exp students 5 students
greenClock 1306 hrs of classes completed
rsIcon 700 per hour
BDS Graduate [Govt Dental College Chennai] | NEET Biology&Chemistry | Class10 Science & Maths Tutor
Online Classes Online Classes

I have over 10 years of experience teaching CBSE Class 12 Biology and Chemistry, helping students build a strong conceptual foundation while achieving excellent board examination results. My teaching methodology focuses on simplifying complex topics through clear explanations, logical reasoning, and regular practice. Every chapter is taught systematically from the NCERT textbook, ensuring students understand every concept thoroughly before progressing to application-based and board-level questions. My classes include detailed concept explanations, NCERT line-by-line learning, important diagrams, numerical problem-solving (Chemistry), previous years' board questions, competency-based questions, and chapter-wise assessments. I provide personalized attention by identifying each student's learning needs and adapting my teaching pace accordingly. Regular doubt-solving sessions, revision classes, mock tests, and performance analysis help students improve accuracy, confidence, and time management before the board examinations. My objective is not only to help students score high marks in the CBSE Class 12 Board Examination but also to develop a deep understanding of Biology and Chemistry, enabling them to confidently prepare for competitive examinations such as NEET. My classes are interactive, well-structured, and focused on helping every student achieve their academic goals through consistent guidance and disciplined practice.

Janani

Excellent coaching. She uses simple and easy methods to help students understand complex concepts. Thank you, ma'am, for your support in building my daughter's future.

Skills: Biology , History and more
Also teaches: Class 11 Tuition, Class 10 Tuition and more

Sujeet B. Class 12 Tuition trainer in Bangalore
(11)
superTutorSuper Tutor
locationImg Kasavanahalli Main Rd Kasavanahalli, Bangalore
experience 2 yrs of Exp students 6 students
greenClock 862 hrs of classes completed
rsIcon 800 per hour
Personalized sessions for Artificial Intelligence, ML, Computer Science, and Mathematics
Online Classes Online Classes

I am a teacher. I love teaching and want to share my knowledge with my students. I will take online classes. My approach combines clear concepts, regular practice, and student-friendly strategies to make learning effective and enjoyable.

Amit Sardana

"Found it to be a very intuitive learning methodology, practical approach, helpful in understanding."

Skills: Mathematics , Physics and more
Also teaches: Class 11 Tuition, Data Science and more

(51)
superTutorSuper Tutor
locationImg Sector 75, Faridabad
experience 9 yrs of Exp students 31 students
greenClock 358 hrs of classes completed
rsIcon 1500 per hour
Accountancy and Economics ( Best in the game)
Online Classes Online Classes
homeTutions Student's Home

I step into the world of education driven by a deep-seated passion for teaching, bringing a wealth of experience in the realms of Accounts, Economics, and Business Studies for Class 11th and 12th. My journey as an educator commenced in 2016, and it has been a fulfilling odyssey ever since. In my pursuit of imparting knowledge, I have chosen both online and offline avenues. Whether through the virtual realm or in the comfort of students' homes, my commitment to fostering a comprehensive understanding of Accounts, Economics, and Business Studies remains unwavering. As a seasoned professional in the teaching landscape, I specialize in the intricate subjects that form the backbone of commerce education. My approach is rooted in the belief that education should not only be informative but also transformative. I strive to make complex concepts accessible, enabling students to navigate the challenges of Class 11th and 12th with confidence. I hold a firm belief that teaching is not just a profession; it's a calling. It's about instilling a love for learning, nurturing critical thinking, and preparing students for the dynamic world of commerce. Through a blend of online and offline methodologies, I aim to create an engaging and effective learning experience for every student under my guidance. Join me on this educational journey, where the pursuit of knowledge is not just a task but a shared adventure. Together, let's unravel the intricacies of Accounts, Economics, and Business Studies. Looking forward to our learning voyage!

Asmaa

The classes are extremely helpful in understanding the concepts and forming full understanding of the subject. The notes given provide an easy review for the exam and the revision classes allow complete recall for the exams.

Skills: Economics , Accountancy and more
Also teaches: Class 11 Tuition

Rachan Padmashali Class 12 Tuition trainer in Udupi
(22)
Top Tutor
locationImg Ambalpadi, Udupi
experience 1 yrs of Exp students 3 students
greenClock 253 hrs of classes completed
rsIcon 600 per hour
Unlock knowledge from the comforts of your home
Online Classes Online Classes

I am an AS/A Economics certified teacher with 5 years of experience. I have cracked national level teaching examination with ALL INDIA RANK 76. Also, cleared state level teaching examination with 1st Rank to the state. I enjoy teaching and want to share my knowledge with my students. I will provide online classes. I completed my MCOM degree. I have guided more than 200 students in my teaching journey where most of them passed with distinction and some of them scored 95 plus in their board examination and others being the board rank holders. I have 5 years of teaching experience helping to contribute students' success.

Skills: English , Economics and more
Also teaches: Class 11 Tuition, UGC NET Exam Coaching and more

Manjunath  Class 12 Tuition trainer in Bangalore
(101)
superTutorSuper Tutor
locationImg Jayanagar East, Bangalore
experience 4 yrs of Exp students 67 students
greenClock 5822 hrs of classes completed
rsIcon 250 per hour
PhD Organic Chemistry at IIT Madras - One to One Tuition and Group Tuition
Online Classes Online Classes
regularClasses Tutor's home

I take classes for grade 12 of Karnataka State PUC, CBSE, ISC, NIOS and Cambridge or IGCSE A Levels. I have 4 years of teaching experience.

Skills: Chemistry
Also teaches: CET Coaching, Class 9 Tuition and more

Other Subjects in CBSE - Class 12

Worksheet Icon

Download free CBSE - Class 12 Biology Environmental Issues EXERCISES worksheets

Download Now

Find Best Class 12 Tuition ?

Find Now »