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UPSC Editorials Quiz : 11 December 2025

Kartavya Desk Staff

Introducing QUED – Questions from Editorials (UPSC Editorials Quiz) , an innovative initiative from InsightsIAS. Considering the significant number of questions in previous UPSC Prelims from editorials, practicing MCQs from this perspective can provide an extra edge. While we cover important editorials separately in our Editorial Section and SECURE Initiative, adding QUED (UPSC Editorials Quiz) to your daily MCQ practice alongside Static Quiz, Current Affairs Quiz, and InstaDART can be crucial for better performance. We recommend utilizing this initiative to enhance your preparation, with 5 MCQs posted daily at 11 am from Monday to Saturday on our website under the QUIZ menu.

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• Question 1 of 5 1. Question Consider the following statements about nitrate contamination mitigation strategies: Crop rotation and cover cropping reduce nitrate leaching. Reverse osmosis is an effective method for nitrate removal from drinking water. Constructed wetlands increase nitrate levels in water bodies. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: B Statement 3 is incorrect. Crop rotation and cover cropping minimize nitrate leaching by improving soil health. Reverse osmosis effectively removes nitrates from water, but constructed wetlands reduce nitrate levels through natural filtration processes. About Nitrate: What it is: A naturally occurring nitrogen compound essential for biological processes, but harmful in excess. Sources: Natural Sources: Soil organic matter decomposition. Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste. Causes of Nitrate Contamination: Agriculture: Leaching of fertilizers into groundwater. Poor Waste Management: Improper disposal of human and animal waste. Industrial Effluents: Discharge of untreated nitrogen-rich wastewater. Impacts of Nitrate Contamination: Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders. Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity. State-Wise Contamination: Rajasthan (49%), Karnataka (48%), Tamil Nadu (37%). Incorrect Solution: B Statement 3 is incorrect. Crop rotation and cover cropping minimize nitrate leaching by improving soil health. Reverse osmosis effectively removes nitrates from water, but constructed wetlands reduce nitrate levels through natural filtration processes. About Nitrate: What it is: A naturally occurring nitrogen compound essential for biological processes, but harmful in excess. Sources: Natural Sources: Soil organic matter decomposition. Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste. Causes of Nitrate Contamination: Agriculture: Leaching of fertilizers into groundwater. Poor Waste Management: Improper disposal of human and animal waste. Industrial Effluents: Discharge of untreated nitrogen-rich wastewater. Impacts of Nitrate Contamination: Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders. Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity. State-Wise Contamination: Rajasthan (49%), Karnataka (48%), Tamil Nadu (37%).

#### 1. Question

Consider the following statements about nitrate contamination mitigation strategies:

• Crop rotation and cover cropping reduce nitrate leaching.

• Reverse osmosis is an effective method for nitrate removal from drinking water.

• Constructed wetlands increase nitrate levels in water bodies.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: B

Statement 3 is incorrect.

Crop rotation and cover cropping minimize nitrate leaching by improving soil health. Reverse osmosis effectively removes nitrates from water, but constructed wetlands reduce nitrate levels through natural filtration processes.

About Nitrate:

What it is: A naturally occurring nitrogen compound essential for biological processes, but harmful in excess.

Sources:

Natural Sources: Soil organic matter decomposition. Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste.

Natural Sources: Soil organic matter decomposition.

Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste.

Causes of Nitrate Contamination:

Agriculture: Leaching of fertilizers into groundwater. Poor Waste Management: Improper disposal of human and animal waste. Industrial Effluents: Discharge of untreated nitrogen-rich wastewater.

Agriculture: Leaching of fertilizers into groundwater.

Poor Waste Management: Improper disposal of human and animal waste.

Industrial Effluents: Discharge of untreated nitrogen-rich wastewater.

Impacts of Nitrate Contamination:

Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders. Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity.

Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders.

• Causes methemoglobinemia (blue baby syndrome) in infants.

• Linked to cancer, reproductive issues, and endocrine disorders.

Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity.

• Disrupts aquatic ecosystems through eutrophication.

• Contributes to soil degradation and water toxicity.

State-Wise Contamination: Rajasthan (49%), Karnataka (48%), Tamil Nadu (37%).

Solution: B

Statement 3 is incorrect.

Crop rotation and cover cropping minimize nitrate leaching by improving soil health. Reverse osmosis effectively removes nitrates from water, but constructed wetlands reduce nitrate levels through natural filtration processes.

About Nitrate:

What it is: A naturally occurring nitrogen compound essential for biological processes, but harmful in excess.

Sources:

Natural Sources: Soil organic matter decomposition. Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste.

Natural Sources: Soil organic matter decomposition.

Anthropogenic Sources: Overuse of synthetic nitrogen fertilizers, improper sewage disposal, and livestock waste.

Causes of Nitrate Contamination:

Agriculture: Leaching of fertilizers into groundwater. Poor Waste Management: Improper disposal of human and animal waste. Industrial Effluents: Discharge of untreated nitrogen-rich wastewater.

Agriculture: Leaching of fertilizers into groundwater.

Poor Waste Management: Improper disposal of human and animal waste.

Industrial Effluents: Discharge of untreated nitrogen-rich wastewater.

Impacts of Nitrate Contamination:

Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders. Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity.

Health Hazards: Causes methemoglobinemia (blue baby syndrome) in infants. Linked to cancer, reproductive issues, and endocrine disorders.

• Causes methemoglobinemia (blue baby syndrome) in infants.

• Linked to cancer, reproductive issues, and endocrine disorders.

Environmental Toxicity: Disrupts aquatic ecosystems through eutrophication. Contributes to soil degradation and water toxicity.

• Disrupts aquatic ecosystems through eutrophication.

• Contributes to soil degradation and water toxicity.

State-Wise Contamination: Rajasthan (49%), Karnataka (48%), Tamil Nadu (37%).

• Question 2 of 5 2. Question Which of the following factors poses the most significant challenge to the widespread adoption of satellite-based in-flight internet technology? a) High data compression reducing internet quality b) Interference from ground-based cellular towers c) Limited compatibility with next-generation aircraft systems d) Signal latency due to geostationary satellite positioning Correct Solution: D Geostationary satellites, positioned approximately 36,000 km above Earth, experience significant signal latency, making real-time communication slower compared to terrestrial systems. Other factors like compatibility and data compression are secondary concerns. About In-Flight Internet: What it is:In-flight Wi-Fi provides passengers with Internet connectivity during flights, enabling access to online services like browsing, streaming, and messaging. How it works: Technology used:Two primary systems – Air-to-Ground (ATG) and Satellite-Based Connectivity. ATG:Uses antennae under the aircraft to connect with ground cellular towers. Suitable for regions with dense tower networks. Satellite-Based:Uses antennae on top of the aircraft to communicate with satellites, ensuring wider coverage, especially over oceans and remote areas. Signal Transmission: Devices connect to in-cabin Wi-Fi antennae. Signals pass through an onboard server. For satellite systems, signals move from the server to satellites, then to ground stations, and back via the same route. For ATG systems, signals travel directly between the aircraft and ground cellular towers. Features and Benefits: Enhanced Passenger Experience:Browsing, streaming, and connecting with the world mid-air. Convenience:Integration with existing airline portals for seamless connectivity. Flexibility:Compatibility with multiple devices. Limitations of In-Flight Wi-Fi: Slower Speeds:Typically, slower than ground-based Internet due to technological constraints. High Costs:Expensive equipment installation and maintenance for airlines, with potential charges for passengers. Limited Coverage:ATG technology struggles over large water bodies or remote areas. Incorrect Solution: D Geostationary satellites, positioned approximately 36,000 km above Earth, experience significant signal latency, making real-time communication slower compared to terrestrial systems. Other factors like compatibility and data compression are secondary concerns. About In-Flight Internet: What it is:In-flight Wi-Fi provides passengers with Internet connectivity during flights, enabling access to online services like browsing, streaming, and messaging. How it works: Technology used:Two primary systems – Air-to-Ground (ATG) and Satellite-Based Connectivity. ATG:Uses antennae under the aircraft to connect with ground cellular towers. Suitable for regions with dense tower networks. Satellite-Based:Uses antennae on top of the aircraft to communicate with satellites, ensuring wider coverage, especially over oceans and remote areas. Signal Transmission: Devices connect to in-cabin Wi-Fi antennae. Signals pass through an onboard server. For satellite systems, signals move from the server to satellites, then to ground stations, and back via the same route. For ATG systems, signals travel directly between the aircraft and ground cellular towers. Features and Benefits: Enhanced Passenger Experience:Browsing, streaming, and connecting with the world mid-air. Convenience:Integration with existing airline portals for seamless connectivity. Flexibility:Compatibility with multiple devices. Limitations of In-Flight Wi-Fi: Slower Speeds:Typically, slower than ground-based Internet due to technological constraints. High Costs:Expensive equipment installation and maintenance for airlines, with potential charges for passengers. Limited Coverage:ATG technology struggles over large water bodies or remote areas.

#### 2. Question

Which of the following factors poses the most significant challenge to the widespread adoption of satellite-based in-flight internet technology?

• a) High data compression reducing internet quality

• b) Interference from ground-based cellular towers

• c) Limited compatibility with next-generation aircraft systems

• d) Signal latency due to geostationary satellite positioning

Solution: D

Geostationary satellites, positioned approximately 36,000 km above Earth, experience significant signal latency, making real-time communication slower compared to terrestrial systems. Other factors like compatibility and data compression are secondary concerns.

About In-Flight Internet:

What it is:In-flight Wi-Fi provides passengers with Internet connectivity during flights, enabling access to online services like browsing, streaming, and messaging.

How it works:

Technology used:Two primary systems – Air-to-Ground (ATG) and Satellite-Based Connectivity.

ATG:Uses antennae under the aircraft to connect with ground cellular towers. Suitable for regions with dense tower networks.

Satellite-Based:Uses antennae on top of the aircraft to communicate with satellites, ensuring wider coverage, especially over oceans and remote areas.

Signal Transmission:

• Devices connect to in-cabin Wi-Fi antennae.

• Signals pass through an onboard server.

• For satellite systems, signals move from the server to satellites, then to ground stations, and back via the same route.

• For ATG systems, signals travel directly between the aircraft and ground cellular towers.

Features and Benefits:

Enhanced Passenger Experience:Browsing, streaming, and connecting with the world mid-air.

Convenience:Integration with existing airline portals for seamless connectivity.

Flexibility:Compatibility with multiple devices.

Limitations of In-Flight Wi-Fi:

Slower Speeds:Typically, slower than ground-based Internet due to technological constraints.

High Costs:Expensive equipment installation and maintenance for airlines, with potential charges for passengers.

Limited Coverage:ATG technology struggles over large water bodies or remote areas.

Solution: D

Geostationary satellites, positioned approximately 36,000 km above Earth, experience significant signal latency, making real-time communication slower compared to terrestrial systems. Other factors like compatibility and data compression are secondary concerns.

About In-Flight Internet:

What it is:In-flight Wi-Fi provides passengers with Internet connectivity during flights, enabling access to online services like browsing, streaming, and messaging.

How it works:

Technology used:Two primary systems – Air-to-Ground (ATG) and Satellite-Based Connectivity.

ATG:Uses antennae under the aircraft to connect with ground cellular towers. Suitable for regions with dense tower networks.

Satellite-Based:Uses antennae on top of the aircraft to communicate with satellites, ensuring wider coverage, especially over oceans and remote areas.

Signal Transmission:

• Devices connect to in-cabin Wi-Fi antennae.

• Signals pass through an onboard server.

• For satellite systems, signals move from the server to satellites, then to ground stations, and back via the same route.

• For ATG systems, signals travel directly between the aircraft and ground cellular towers.

Features and Benefits:

Enhanced Passenger Experience:Browsing, streaming, and connecting with the world mid-air.

Convenience:Integration with existing airline portals for seamless connectivity.

Flexibility:Compatibility with multiple devices.

Limitations of In-Flight Wi-Fi:

Slower Speeds:Typically, slower than ground-based Internet due to technological constraints.

High Costs:Expensive equipment installation and maintenance for airlines, with potential charges for passengers.

Limited Coverage:ATG technology struggles over large water bodies or remote areas.

• Question 3 of 5 3. Question Consider the following statements regarding Sree Narayana Guru: Sree Narayana Guru promoted inter-caste marriages to combat caste-based discrimination. He actively supported the Vaikom Satyagraha, which aimed to achieve temple entry rights for oppressed communities. His teachings included the abolition of all forms of religious practices. How many of the above statements is/are incorrect? (a) Only one (b) Only two (c) All three (d) None Correct Solution: A Statements 1 and 2 are correct. Sree Narayana Guru supported reforms like inter-caste marriages and the Vaikom Satyagraha. Statement 3 is incorrect as he did not advocate for the abolition of religious practices but rather for reforms in them. About Sree Narayana Guru: Born at:Chempazhanthy, near Thiruvananthapuram, Kerala, on August 22, 1856. Community:Belonged to the Ezhava caste, a marginalized group subjected to caste-based discrimination. History and Background: Known as ‘Avarna,’he cherished solitude and spent time in meditation from a young age. His revolutionary act of installing a Shivalinga at Aruvippuram in 1888symbolized the rejection of caste-based restrictions in temple practices. Contributions: SNDP Movement:Founded the Shree Narayana Dharma Paripalana Yogam in 1903 to address issues like education, government service access, and temple entry for Ezhavas. Philosophy:Coined the famous slogan, *“One Caste, One Religion, One God for All” (Oru Jathi, Oru Matham, Oru Daivam, Manushyanu). Advocated for equality without provoking social unrest or forced conversions. Opposed animal sacrifices and promoted non-violence. Literary Work: Authored devotional hymns and philosophical texts that emphasized universal brotherhood and spiritual enlightenment. Wrote the Atmopadesa Satakamand other works inspiring moral and spiritual values. Incorrect Solution: A Statements 1 and 2 are correct. Sree Narayana Guru supported reforms like inter-caste marriages and the Vaikom Satyagraha. Statement 3 is incorrect as he did not advocate for the abolition of religious practices but rather for reforms in them. About Sree Narayana Guru: Born at:Chempazhanthy, near Thiruvananthapuram, Kerala, on August 22, 1856. Community:Belonged to the Ezhava caste, a marginalized group subjected to caste-based discrimination. History and Background: Known as ‘Avarna,’he cherished solitude and spent time in meditation from a young age. His revolutionary act of installing a Shivalinga at Aruvippuram in 1888symbolized the rejection of caste-based restrictions in temple practices. Contributions: SNDP Movement:Founded the Shree Narayana Dharma Paripalana Yogam in 1903 to address issues like education, government service access, and temple entry for Ezhavas. Philosophy:Coined the famous slogan, “One Caste, One Religion, One God for All” (Oru Jathi, Oru Matham, Oru Daivam, Manushyanu). Advocated for equality without provoking social unrest or forced conversions. Opposed animal sacrifices and promoted non-violence. Literary Work: Authored devotional hymns and philosophical texts that emphasized universal brotherhood and spiritual enlightenment. Wrote the Atmopadesa Satakam*and other works inspiring moral and spiritual values.

#### 3. Question

Consider the following statements regarding Sree Narayana Guru:

• Sree Narayana Guru promoted inter-caste marriages to combat caste-based discrimination.

• He actively supported the Vaikom Satyagraha, which aimed to achieve temple entry rights for oppressed communities.

• His teachings included the abolition of all forms of religious practices.

How many of the above statements is/are incorrect?

• (a) Only one

• (b) Only two

• (c) All three

Solution: A

Statements 1 and 2 are correct. Sree Narayana Guru supported reforms like inter-caste marriages and the Vaikom Satyagraha.

Statement 3 is incorrect as he did not advocate for the abolition of religious practices but rather for reforms in them.

About Sree Narayana Guru:

Born at:Chempazhanthy, near Thiruvananthapuram, Kerala, on August 22, 1856.

Community:Belonged to the Ezhava caste, a marginalized group subjected to caste-based discrimination.

History and Background:

• Known as ‘Avarna,’he cherished solitude and spent time in meditation from a young age.

• His revolutionary act of installing a Shivalinga at Aruvippuram in 1888symbolized the rejection of caste-based restrictions in temple practices.

Contributions:

SNDP Movement:Founded the Shree Narayana Dharma Paripalana Yogam in 1903 to address issues like education, government service access, and temple entry for Ezhavas.

Philosophy:Coined the famous slogan, *“One Caste, One Religion, One God for All”* (Oru Jathi, Oru Matham, Oru Daivam, Manushyanu).

• Advocated for equality without provoking social unrest or forced conversions.

• Opposed animal sacrifices and promoted non-violence.

Literary Work:

• Authored devotional hymns and philosophical texts that emphasized universal brotherhood and spiritual enlightenment.

• Wrote the Atmopadesa Satakamand other works inspiring moral and spiritual values.

Solution: A

Statements 1 and 2 are correct. Sree Narayana Guru supported reforms like inter-caste marriages and the Vaikom Satyagraha.

Statement 3 is incorrect as he did not advocate for the abolition of religious practices but rather for reforms in them.

About Sree Narayana Guru:

Born at:Chempazhanthy, near Thiruvananthapuram, Kerala, on August 22, 1856.

Community:Belonged to the Ezhava caste, a marginalized group subjected to caste-based discrimination.

History and Background:

• Known as ‘Avarna,’he cherished solitude and spent time in meditation from a young age.

• His revolutionary act of installing a Shivalinga at Aruvippuram in 1888symbolized the rejection of caste-based restrictions in temple practices.

Contributions:

SNDP Movement:Founded the Shree Narayana Dharma Paripalana Yogam in 1903 to address issues like education, government service access, and temple entry for Ezhavas.

Philosophy:Coined the famous slogan, *“One Caste, One Religion, One God for All”* (Oru Jathi, Oru Matham, Oru Daivam, Manushyanu).

• Advocated for equality without provoking social unrest or forced conversions.

• Opposed animal sacrifices and promoted non-violence.

Literary Work:

• Authored devotional hymns and philosophical texts that emphasized universal brotherhood and spiritual enlightenment.

• Wrote the Atmopadesa Satakamand other works inspiring moral and spiritual values.

• Question 4 of 5 4. Question Consider the following statements about satellite-based in-flight internet: It provides seamless coverage over oceans and remote areas. Signals are transmitted directly from satellites to passenger devices. It is more suitable for long-haul international flights than Air-to-Ground (ATG) in-flight internet systems. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: B Statements 1 and 3 are correct. Satellite-based systems ensure wide coverage, especially over oceans, making them ideal for long-haul flights. Statement 2 is incorrect as signals are routed through onboard servers, not directly to passenger devices. Incorrect Solution: B Statements 1 and 3 are correct. Satellite-based systems ensure wide coverage, especially over oceans, making them ideal for long-haul flights. Statement 2 is incorrect as signals are routed through onboard servers, not directly to passenger devices.

#### 4. Question

Consider the following statements about satellite-based in-flight internet:

• It provides seamless coverage over oceans and remote areas.

• Signals are transmitted directly from satellites to passenger devices.

• It is more suitable for long-haul international flights than Air-to-Ground (ATG) in-flight internet systems.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: B

Statements 1 and 3 are correct. Satellite-based systems ensure wide coverage, especially over oceans, making them ideal for long-haul flights. Statement 2 is incorrect as signals are routed through onboard servers, not directly to passenger devices.

Solution: B

Statements 1 and 3 are correct. Satellite-based systems ensure wide coverage, especially over oceans, making them ideal for long-haul flights. Statement 2 is incorrect as signals are routed through onboard servers, not directly to passenger devices.

• Question 5 of 5 5. Question Consider the following statements about injectable hydrogels: They are designed to release drugs in response to specific environmental triggers. They improve drug bioavailability at the tumor site. They require continuous external stimuli for drug release. How many of the above statements is/are incorrect? a) Only one b) Only two c) All three d) None Correct Solution: A Statements 1 and 2 are correct. Injectable hydrogels release drugs in response to internal triggers, like high GSH levels or pH changes, improving bioavailability. Statement 3 is incorrect because the release is autonomous and does not require continuous external stimuli. About the Hydrogel: What it is:A water-based polymer network designed to release anti-cancer drugs precisely at the tumour site, sparing healthy cells. Developed by:Researchers from IIT-Guwahati and Bose Institute, Kolkata. Features: Localised Drug Delivery:Precisely targets cancer cells without affecting healthy cells. Responsive Design:Reacts to elevated glutathione (GSH) levels abundant in tumour cells. Biocompatibility:Mimics living tissues for seamless integration with the biological environment. Stability:Remains insoluble in biological fluids, ensuring localization at the injection site. Significance: Reduces harmful side effects associated with traditional chemotherapy. Enhances precision in cancer therapy, particularly for breast cancer. Represents a step forward in personalized and localized cancer treatments. Incorrect Solution: A Statements 1 and 2 are correct. Injectable hydrogels release drugs in response to internal triggers, like high GSH levels or pH changes, improving bioavailability. Statement 3 is incorrect because the release is autonomous and does not require continuous external stimuli. About the Hydrogel: What it is:A water-based polymer network designed to release anti-cancer drugs precisely at the tumour site, sparing healthy cells. Developed by:Researchers from IIT-Guwahati and Bose Institute, Kolkata. Features: Localised Drug Delivery:Precisely targets cancer cells without affecting healthy cells. Responsive Design:Reacts to elevated glutathione (GSH) levels abundant in tumour cells. Biocompatibility:Mimics living tissues for seamless integration with the biological environment. Stability:Remains insoluble in biological fluids, ensuring localization at the injection site. Significance: Reduces harmful side effects associated with traditional chemotherapy. Enhances precision in cancer therapy, particularly for breast cancer. Represents a step forward in personalized and localized cancer treatments.

#### 5. Question

Consider the following statements about injectable hydrogels:

• They are designed to release drugs in response to specific environmental triggers.

• They improve drug bioavailability at the tumor site.

• They require continuous external stimuli for drug release.

How many of the above statements is/are incorrect?

• a) Only one

• b) Only two

• c) All three

Solution: A

Statements 1 and 2 are correct. Injectable hydrogels release drugs in response to internal triggers, like high GSH levels or pH changes, improving bioavailability. Statement 3 is incorrect because the release is autonomous and does not require continuous external stimuli.

About the Hydrogel:

What it is:A water-based polymer network designed to release anti-cancer drugs precisely at the tumour site, sparing healthy cells.

Developed by:Researchers from IIT-Guwahati and Bose Institute, Kolkata.

Features:

Localised Drug Delivery:Precisely targets cancer cells without affecting healthy cells.

Responsive Design:Reacts to elevated glutathione (GSH) levels abundant in tumour cells.

Biocompatibility:Mimics living tissues for seamless integration with the biological environment.

Stability:Remains insoluble in biological fluids, ensuring localization at the injection site.

Significance:

• Reduces harmful side effects associated with traditional chemotherapy.

• Enhances precision in cancer therapy, particularly for breast cancer.

• Represents a step forward in personalized and localized cancer treatments.

Solution: A

Statements 1 and 2 are correct. Injectable hydrogels release drugs in response to internal triggers, like high GSH levels or pH changes, improving bioavailability. Statement 3 is incorrect because the release is autonomous and does not require continuous external stimuli.

About the Hydrogel:

What it is:A water-based polymer network designed to release anti-cancer drugs precisely at the tumour site, sparing healthy cells.

Developed by:Researchers from IIT-Guwahati and Bose Institute, Kolkata.

Features:

Localised Drug Delivery:Precisely targets cancer cells without affecting healthy cells.

Responsive Design:Reacts to elevated glutathione (GSH) levels abundant in tumour cells.

Biocompatibility:Mimics living tissues for seamless integration with the biological environment.

Stability:Remains insoluble in biological fluids, ensuring localization at the injection site.

Significance:

• Reduces harmful side effects associated with traditional chemotherapy.

• Enhances precision in cancer therapy, particularly for breast cancer.

• Represents a step forward in personalized and localized cancer treatments.

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