UPSC Current Affairs Quiz : 28 April 2025

The Current Affairs Quiz 2024 is a daily quiz based on the DAILY CURRENT AFFAIRS AND PIB SUMMARY from the previous day, as posted on our website. It covers all relevant news sources and is designed to test your knowledge of current events. Solving these questions will help you retain both concepts and facts relevant to the UPSC IAS civil services exam.

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• Question 1 of 10 1. Question 1 points Consider the following statements regarding the working of pagers: Pagers actively send encrypted signals back to communication towers. Pagers work primarily by receiving signals broadcast over radio frequencies. The user of a pager can respond to a message directly through the pager itself. How many of the above statements is/are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: a) Pagers are simple, low-power communication devices that primarily receive messages broadcast over radio frequencies. Statement 2 is correct because pagers are designed for one-way communication — they pick up signals from central transmitters but do not actively communicate back. This design makes them highly reliable even in remote areas and hard for third parties to track in real-time. Statement 1 is incorrect because pagers do not *send* encrypted or any other signals back to towers; they are passive receivers, unlike mobile phones, which constantly send and receive signals. Statement 3 is also incorrect as pagers are not equipped to transmit replies or messages; users must use a separate phone line or another device to respond after receiving a notification. Incorrect Solution: a) Pagers are simple, low-power communication devices that primarily receive messages broadcast over radio frequencies. Statement 2 is correct because pagers are designed for one-way communication — they pick up signals from central transmitters but do not actively communicate back. This design makes them highly reliable even in remote areas and hard for third parties to track in real-time. Statement 1 is incorrect because pagers do not *send* encrypted or any other signals back to towers; they are passive receivers, unlike mobile phones, which constantly send and receive signals. Statement 3 is also incorrect as pagers are not equipped to transmit replies or messages; users must use a separate phone line or another device to respond after receiving a notification.

#### 1. Question

Consider the following statements regarding the working of pagers:

• Pagers actively send encrypted signals back to communication towers.

• Pagers work primarily by receiving signals broadcast over radio frequencies.

• The user of a pager can respond to a message directly through the pager itself.

How many of the above statements is/are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: a)

• Pagers are simple, low-power communication devices that primarily receive messages broadcast over radio frequencies.

• Statement 2 is correct because pagers are designed for one-way communication — they pick up signals from central transmitters but do not actively communicate back. This design makes them highly reliable even in remote areas and hard for third parties to track in real-time.

• Statement 1 is incorrect because pagers do not *send* encrypted or any other signals back to towers; they are passive receivers, unlike mobile phones, which constantly send and receive signals.

• Statement 3 is also incorrect as pagers are not equipped to transmit replies or messages; users must use a separate phone line or another device to respond after receiving a notification.

Solution: a)

• Pagers are simple, low-power communication devices that primarily receive messages broadcast over radio frequencies.

• Statement 3 is also incorrect as pagers are not equipped to transmit replies or messages; users must use a separate phone line or another device to respond after receiving a notification.

• Question 2 of 10 2. Question 1 points Consider the following statements regarding Supercomputers in India: PARAM Siddhi AI is developed by the Indian Space Research Organisation (ISRO). AIRAWAT is an AI-specific supercomputer developed under India’s National AI Mission. Pratyush and Mihir are primarily used for weather and climate forecasting. How many of the above statements is/are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: b) Supercomputers in India are developed and utilized for various specialized purposes. Statement 1 is incorrect because PARAM Siddhi AI was developed by the Centre for Development of Advanced Computing (C-DAC), not ISRO. It focuses on artificial intelligence applications and is a major achievement under the National Supercomputing Mission (NSM). Statement 2 is correct — AIRAWAT is an AI-specific supercomputer built under India’s National AI Mission, intended to boost research in machine learning, deep learning, and other AI-related fields. It positions India competitively in the global AI research ecosystem. Statement 3 is also correct — Pratyush and Mihir are high-performance computing systems used mainly for weather and climate forecasting, helping in areas like monsoon prediction, cyclone warning, and climate change studies. These systems significantly contribute to disaster management and agricultural planning. Incorrect Solution: b) Supercomputers in India are developed and utilized for various specialized purposes. Statement 1 is incorrect because PARAM Siddhi AI was developed by the Centre for Development of Advanced Computing (C-DAC), not ISRO. It focuses on artificial intelligence applications and is a major achievement under the National Supercomputing Mission (NSM). Statement 2 is correct — AIRAWAT is an AI-specific supercomputer built under India’s National AI Mission, intended to boost research in machine learning, deep learning, and other AI-related fields. It positions India competitively in the global AI research ecosystem. Statement 3 is also correct — Pratyush and Mihir are high-performance computing systems used mainly for weather and climate forecasting, helping in areas like monsoon prediction, cyclone warning, and climate change studies. These systems significantly contribute to disaster management and agricultural planning.

#### 2. Question

Consider the following statements regarding Supercomputers in India:

• PARAM Siddhi AI is developed by the Indian Space Research Organisation (ISRO).

• AIRAWAT is an AI-specific supercomputer developed under India’s National AI Mission.

• Pratyush and Mihir are primarily used for weather and climate forecasting.

How many of the above statements is/are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: b)

• Supercomputers in India are developed and utilized for various specialized purposes.

• Statement 1 is incorrect because PARAM Siddhi AI was developed by the Centre for Development of Advanced Computing (C-DAC), not ISRO. It focuses on artificial intelligence applications and is a major achievement under the National Supercomputing Mission (NSM).

• Statement 2 is correct — AIRAWAT is an AI-specific supercomputer built under India’s National AI Mission, intended to boost research in machine learning, deep learning, and other AI-related fields. It positions India competitively in the global AI research ecosystem.

• Statement 3 is also correct — Pratyush and Mihir are high-performance computing systems used mainly for weather and climate forecasting, helping in areas like monsoon prediction, cyclone warning, and climate change studies. These systems significantly contribute to disaster management and agricultural planning.

Solution: b)

• Supercomputers in India are developed and utilized for various specialized purposes.

• Question 3 of 10 3. Question 1 points Consider the following statements regarding Sub-zero temperature batteries, recently developed by Council of Scientific and Industrial Research (CSIR). It is a step toward low-carbon energy storage alternatives. It aims to replace nuclear batteries in space missions. It features an anti-freezing electrolyte formulation. How many of the above statements is/are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: b) Statement 2 is incorrect. The battery has an anti-freezing electrolyte and targets cold climate durability, and it contributes to low-carbon energy solutions like metal-air batteries. However, it is not intended to replace nuclear batteries used in space missions (such as RTGs). The Council of Scientific and Industrial Research (CSIR) has developed a new battery designed to function effectively in sub-zero temperatures, which is particularly beneficial for defence forces and civilians in high-altitude regions. The innovative battery features a durable cathode catalyst and an anti-freezing electrolyte, making it suitable for extreme cold conditions where conventional batteries fail. Researchers at CSIR-Central Mechanical Engineering Research Institute created a hybrid cathode material combining cobalt and iron alloys with nanoparticles. This enhancement improves the battery’s durability and performance in both liquid and solid-state zinc-air batteries, even in very low temperatures. The new battery’s portability, flexibility, and lightweight nature make it a versatile energy solution for various users, including military personnel and remote communities. The technology is part of a broader effort to develop efficient energy storage systems, addressing limitations of traditional lithium-ion batteries and exploring alternatives like metal-air batteries and electro-catalytic techniques for low carbon footprint solutions. Incorrect Solution: b) Statement 2 is incorrect. The battery has an anti-freezing electrolyte and targets cold climate durability, and it contributes to low-carbon energy solutions like metal-air batteries. However, it is not intended to replace nuclear batteries used in space missions (such as RTGs). The Council of Scientific and Industrial Research (CSIR) has developed a new battery designed to function effectively in sub-zero temperatures, which is particularly beneficial for defence forces and civilians in high-altitude regions. The innovative battery features a durable cathode catalyst and an anti-freezing electrolyte, making it suitable for extreme cold conditions where conventional batteries fail. Researchers at CSIR-Central Mechanical Engineering Research Institute created a hybrid cathode material combining cobalt and iron alloys with nanoparticles. This enhancement improves the battery’s durability and performance in both liquid and solid-state zinc-air batteries, even in very low temperatures. The new battery’s portability, flexibility, and lightweight nature make it a versatile energy solution for various users, including military personnel and remote communities. The technology is part of a broader effort to develop efficient energy storage systems, addressing limitations of traditional lithium-ion batteries and exploring alternatives like metal-air batteries and electro-catalytic techniques for low carbon footprint solutions.

#### 3. Question

Consider the following statements regarding Sub-zero temperature batteries, recently developed by Council of Scientific and Industrial Research (CSIR).

• It is a step toward low-carbon energy storage alternatives.

• It aims to replace nuclear batteries in space missions.

• It features an anti-freezing electrolyte formulation.

How many of the above statements is/are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: b)

Statement 2 is incorrect.

The battery has an anti-freezing electrolyte and targets cold climate durability, and it contributes to low-carbon energy solutions like metal-air batteries. However, it is not intended to replace nuclear batteries used in space missions (such as RTGs).

The Council of Scientific and Industrial Research (CSIR) has developed a new battery designed to function effectively in sub-zero temperatures, which is particularly beneficial for defence forces and civilians in high-altitude regions.

• The innovative battery features a durable cathode catalyst and an anti-freezing electrolyte, making it suitable for extreme cold conditions where conventional batteries fail.

• Researchers at CSIR-Central Mechanical Engineering Research Institute created a hybrid cathode material combining cobalt and iron alloys with nanoparticles.

• This enhancement improves the battery’s durability and performance in both liquid and solid-state zinc-air batteries, even in very low temperatures.

• The new battery’s portability, flexibility, and lightweight nature make it a versatile energy solution for various users, including military personnel and remote communities.

The technology is part of a broader effort to develop efficient energy storage systems, addressing limitations of traditional lithium-ion batteries and exploring alternatives like metal-air batteries and electro-catalytic techniques for low carbon footprint solutions.

Solution: b)

Statement 2 is incorrect.

• The innovative battery features a durable cathode catalyst and an anti-freezing electrolyte, making it suitable for extreme cold conditions where conventional batteries fail.

• Researchers at CSIR-Central Mechanical Engineering Research Institute created a hybrid cathode material combining cobalt and iron alloys with nanoparticles.

• This enhancement improves the battery’s durability and performance in both liquid and solid-state zinc-air batteries, even in very low temperatures.

• The new battery’s portability, flexibility, and lightweight nature make it a versatile energy solution for various users, including military personnel and remote communities.

• Question 4 of 10 4. Question 1 points Consider the following statements regarding Solar paraboloid systems: Solar paraboloids can generate electricity without using a heat engine. Upfront capital costs remain a major barrier to wide-scale deployment. The operating temperatures achieved by paraboloid systems are typically below 100°C. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: a) Solar paraboloid systems are an advanced type of concentrated solar power (CSP) Statement 1 is incorrect because solar paraboloids typically require a heat engine, such as a Stirling engine or a Rankine cycle system, to convert the collected thermal energy into electricity. They do not directly produce electricity like photovoltaic cells. Statement 2 is correct — while the technology offers high efficiency, high upfront capital costs, including the cost of precision mirrors, tracking systems, and specialized heat engines, are significant barriers to its wider deployment, especially in developing countries. Statement 3 is incorrect because solar paraboloid systems operate at very high temperatures, often exceeding 300°C, allowing for more efficient thermodynamic conversion; operating at below 100°C would be too low for efficient electricity generation. Incorrect Solution: a) Solar paraboloid systems are an advanced type of concentrated solar power (CSP) Statement 1 is incorrect because solar paraboloids typically require a heat engine, such as a Stirling engine or a Rankine cycle system, to convert the collected thermal energy into electricity. They do not directly produce electricity like photovoltaic cells. Statement 2 is correct — while the technology offers high efficiency, high upfront capital costs, including the cost of precision mirrors, tracking systems, and specialized heat engines, are significant barriers to its wider deployment, especially in developing countries. Statement 3 is incorrect because solar paraboloid systems operate at very high temperatures, often exceeding 300°C, allowing for more efficient thermodynamic conversion; operating at below 100°C would be too low for efficient electricity generation.

#### 4. Question

Consider the following statements regarding Solar paraboloid systems:

• Solar paraboloids can generate electricity without using a heat engine.

• Upfront capital costs remain a major barrier to wide-scale deployment.

• The operating temperatures achieved by paraboloid systems are typically below 100°C.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: a)

• Solar paraboloid systems are an advanced type of concentrated solar power (CSP)

• Statement 1 is incorrect because solar paraboloids typically require a heat engine, such as a Stirling engine or a Rankine cycle system, to convert the collected thermal energy into electricity. They do not directly produce electricity like photovoltaic cells.

• Statement 2 is correct — while the technology offers high efficiency, high upfront capital costs, including the cost of precision mirrors, tracking systems, and specialized heat engines, are significant barriers to its wider deployment, especially in developing countries.

Statement 3 is incorrect because solar paraboloid systems operate at very high temperatures, often exceeding 300°C, allowing for more efficient thermodynamic conversion; operating at below 100°C would be too low for efficient electricity generation.

Solution: a)

• Solar paraboloid systems are an advanced type of concentrated solar power (CSP)

• Question 5 of 10 5. Question 1 points Consider the following statements about Electroencephalography (EEG): EEG is the first-choice imaging tool for detecting brain tumors. EEG can be used for determining brain death. EEG electrodes must be surgically implanted into the brain. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: a) Electroencephalography (EEG) is a critical tool for evaluating brain electrical activity but has specific, limited applications. Statement 1 is incorrect because EEG is not an imaging modality; brain tumors are primarily detected using imaging techniques like MRI or CT scans, not EEG. EEG assesses the brain’s electrical patterns but cannot visualize structural abnormalities. Statement 2 is correct — EEG is instrumental in confirming brain death by demonstrating a complete absence of cerebral electrical activity, an essential criterion in clinical protocols. Statement 3 is incorrect — in standard EEG, electrodes are non-invasively attached to the scalp using adhesives or conductive gels. Surgical implantation of electrodes is only performed in specialized cases (like intracranial EEG for epilepsy surgery), and even then, it is not the norm. Incorrect Solution: a) Electroencephalography (EEG) is a critical tool for evaluating brain electrical activity but has specific, limited applications. Statement 1 is incorrect because EEG is not an imaging modality; brain tumors are primarily detected using imaging techniques like MRI or CT scans, not EEG. EEG assesses the brain’s electrical patterns but cannot visualize structural abnormalities. Statement 2 is correct — EEG is instrumental in confirming brain death by demonstrating a complete absence of cerebral electrical activity, an essential criterion in clinical protocols. Statement 3 is incorrect — in standard EEG, electrodes are non-invasively attached to the scalp using adhesives or conductive gels. Surgical implantation of electrodes is only performed in specialized cases (like intracranial EEG for epilepsy surgery), and even then, it is not the norm.

#### 5. Question

Consider the following statements about Electroencephalography (EEG):

• EEG is the first-choice imaging tool for detecting brain tumors.

• EEG can be used for determining brain death.

• EEG electrodes must be surgically implanted into the brain.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: a)

• Electroencephalography (EEG) is a critical tool for evaluating brain electrical activity but has specific, limited applications.

• Statement 1 is incorrect because EEG is not an imaging modality; brain tumors are primarily detected using imaging techniques like MRI or CT scans, not EEG. EEG assesses the brain’s electrical patterns but cannot visualize structural abnormalities.

• Statement 2 is correct — EEG is instrumental in confirming brain death by demonstrating a complete absence of cerebral electrical activity, an essential criterion in clinical protocols.

• Statement 3 is incorrect — in standard EEG, electrodes are non-invasively attached to the scalp using adhesives or conductive gels. Surgical implantation of electrodes is only performed in specialized cases (like intracranial EEG for epilepsy surgery), and even then, it is not the norm.

Solution: a)

• Electroencephalography (EEG) is a critical tool for evaluating brain electrical activity but has specific, limited applications.

• Question 6 of 10 6. Question 1 points Which unique feature distinguishes the Proba-3 mission from traditional solar observation missions? a) Its ability to study solar flares from geostationary orbit b) Its usage of lunar occultation to study the solar atmosphere c) Its single-satellite platform integrating all instruments d) Its millimeter-precision formation flying to create artificial eclipses Correct Solution: d) Proba-3 is distinct because it uses two separate spacecraft — the Coronagraph and the Occulter — flying in perfect formation with millimeter-level precision to artificially replicate solar eclipses. This is a major technological innovation, allowing continuous, prolonged observations of the Sun’s corona — something traditional instruments struggle with due to the overwhelming brightness of the solar disk. Proba-3 physically separates the occulter and the observing telescope, minimizing diffraction and light scattering. Neither lunar occultations (natural eclipses) nor single-satellite designs are employed here, making Proba-3 a pioneer in precision formation flying for space science. Incorrect Solution: d) Proba-3 is distinct because it uses two separate spacecraft — the Coronagraph and the Occulter — flying in perfect formation with millimeter-level precision to artificially replicate solar eclipses. This is a major technological innovation, allowing continuous, prolonged observations of the Sun’s corona — something traditional instruments struggle with due to the overwhelming brightness of the solar disk. Proba-3 physically separates the occulter and the observing telescope, minimizing diffraction and light scattering. Neither lunar occultations (natural eclipses) nor single-satellite designs are employed here, making Proba-3 a pioneer in precision formation flying for space science.

#### 6. Question

Which unique feature distinguishes the Proba-3 mission from traditional solar observation missions?

• a) Its ability to study solar flares from geostationary orbit

• b) Its usage of lunar occultation to study the solar atmosphere

• c) Its single-satellite platform integrating all instruments

• d) Its millimeter-precision formation flying to create artificial eclipses

Solution: d)

• Proba-3 is distinct because it uses two separate spacecraft — the Coronagraph and the Occulter — flying in perfect formation with millimeter-level precision to artificially replicate solar eclipses. This is a major technological innovation, allowing continuous, prolonged observations of the Sun’s corona — something traditional instruments struggle with due to the overwhelming brightness of the solar disk.

• Proba-3 physically separates the occulter and the observing telescope, minimizing diffraction and light scattering.

Neither lunar occultations (natural eclipses) nor single-satellite designs are employed here, making Proba-3 a pioneer in precision formation flying for space science.

Solution: d)

• Proba-3 physically separates the occulter and the observing telescope, minimizing diffraction and light scattering.

Neither lunar occultations (natural eclipses) nor single-satellite designs are employed here, making Proba-3 a pioneer in precision formation flying for space science.

• Question 7 of 10 7. Question 1 points Which one of the following features distinguishes Human Rated Launch Vehicle Mark-3 (HLVM-3) from ISRO’s earlier launch vehicles? a) Use of cryogenic engines for the first time b) Deployment of Crew Escape System operational till atmospheric separation c) Ability to place satellites directly into geostationary orbit d) Single-stage launch design for simplified human missions Correct Solution: b) The Human Rated Launch Vehicle Mark-3 (HLVM-3) is an advanced, human-rated adaptation of ISRO’s LVM3 designed to safely carry astronauts under the Gaganyaan mission. Option (b) is correct — the key distinguishing feature of HLVM-3 is its incorporation of a Crew Escape System (CES). This system ensures that in case of any malfunction during launch or atmospheric ascent, the crew module can quickly detach and move away safely to protect the astronauts, up until the point of atmospheric separation. Incorrect Solution: b) The Human Rated Launch Vehicle Mark-3 (HLVM-3) is an advanced, human-rated adaptation of ISRO’s LVM3 designed to safely carry astronauts under the Gaganyaan mission. Option (b) is correct — the key distinguishing feature of HLVM-3 is its incorporation of a Crew Escape System (CES). This system ensures that in case of any malfunction during launch or atmospheric ascent, the crew module can quickly detach and move away safely to protect the astronauts, up until the point of atmospheric separation.

#### 7. Question

Which one of the following features distinguishes Human Rated Launch Vehicle Mark-3 (HLVM-3) from ISRO’s earlier launch vehicles?

• a) Use of cryogenic engines for the first time

• b) Deployment of Crew Escape System operational till atmospheric separation

• c) Ability to place satellites directly into geostationary orbit

• d) Single-stage launch design for simplified human missions

Solution: b)

• The Human Rated Launch Vehicle Mark-3 (HLVM-3) is an advanced, human-rated adaptation of ISRO’s LVM3 designed to safely carry astronauts under the Gaganyaan mission.

Option (b) is correct — the key distinguishing feature of HLVM-3 is its incorporation of a Crew Escape System (CES). This system ensures that in case of any malfunction during launch or atmospheric ascent, the crew module can quickly detach and move away safely to protect the astronauts, up until the point of atmospheric separation.

Solution: b)

• The Human Rated Launch Vehicle Mark-3 (HLVM-3) is an advanced, human-rated adaptation of ISRO’s LVM3 designed to safely carry astronauts under the Gaganyaan mission.

• Question 8 of 10 8. Question 1 points Which of the following best characterizes India’s participation in the Axiom-4 mission? a) It is a full-fledged collaboration to build a new permanent space station. b) It marks India’s first independent crewed mission to the Moon. c) It involves launching astronauts using ISRO’s HLVM-3 rocket. d) It is a part of a private astronaut mission in partnership with NASA. Correct Solution: d) India’s participation in the Axiom-4 mission represents its first step into private astronaut missions, partnering with NASA and Axiom Space, a U.S.-based private company. It does not involve an independent lunar mission, nor is ISRO launching them using HLVM-3 for this mission; they will travel aboard a spacecraft like SpaceX’s Crew Dragon. This mission strengthens the ISRO-NASA partnership and provides valuable exposure to Indian astronauts before Gaganyaan. It also symbolizes a shift towards public-private international collaboration in space exploration. Incorrect Solution: d) India’s participation in the Axiom-4 mission represents its first step into private astronaut missions, partnering with NASA and Axiom Space, a U.S.-based private company. It does not involve an independent lunar mission, nor is ISRO launching them using HLVM-3 for this mission; they will travel aboard a spacecraft like SpaceX’s Crew Dragon. This mission strengthens the ISRO-NASA partnership and provides valuable exposure to Indian astronauts before Gaganyaan. It also symbolizes a shift towards public-private international collaboration in space exploration.

#### 8. Question

Which of the following best characterizes India’s participation in the Axiom-4 mission?

• a) It is a full-fledged collaboration to build a new permanent space station.

• b) It marks India’s first independent crewed mission to the Moon.

• c) It involves launching astronauts using ISRO’s HLVM-3 rocket.

• d) It is a part of a private astronaut mission in partnership with NASA.

Solution: d)

• India’s participation in the Axiom-4 mission represents its first step into private astronaut missions, partnering with NASA and Axiom Space, a U.S.-based private company. It does not involve an independent lunar mission, nor is ISRO launching them using HLVM-3 for this mission; they will travel aboard a spacecraft like SpaceX’s Crew Dragon.

This mission strengthens the ISRO-NASA partnership and provides valuable exposure to Indian astronauts before Gaganyaan. It also symbolizes a shift towards public-private international collaboration in space exploration.

Solution: d)

• Question 9 of 10 9. Question 1 points Consider the following statements regarding the BioE3 Policy: It promotes development of biopolymers and enzymes as alternatives to traditional petrochemical products. It aims to reduce carbon footprint through the promotion of carbon capture and storage technologies. Which of the above statements is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 Correct Solution: c) The BioE3 Policy is a comprehensive framework aimed at promoting a sustainable bioeconomy by replacing conventional fossil-fuel-based products with bio-based alternatives. Statement 1 is correct because the policy supports the development of biopolymers, bioenzymes, and other biomaterials to reduce dependency on petrochemicals. This aligns with the broader goals of reducing environmental impact and fostering innovation in green chemistry and biotechnology. Statement 2 is also correct — the policy recognizes the need to lower the carbon footprint and actively encourages the development and deployment of carbon capture, utilization, and storage (CCUS) technologies. These measures are essential to combat climate change by removing or utilizing carbon emissions effectively. Together, these initiatives form a part of India’s broader strategy to transition toward a circular bioeconomy and meet its international climate commitments. Incorrect Solution: c) The BioE3 Policy is a comprehensive framework aimed at promoting a sustainable bioeconomy by replacing conventional fossil-fuel-based products with bio-based alternatives. Statement 1 is correct because the policy supports the development of biopolymers, bioenzymes, and other biomaterials to reduce dependency on petrochemicals. This aligns with the broader goals of reducing environmental impact and fostering innovation in green chemistry and biotechnology. Statement 2 is also correct — the policy recognizes the need to lower the carbon footprint and actively encourages the development and deployment of carbon capture, utilization, and storage (CCUS) technologies. These measures are essential to combat climate change by removing or utilizing carbon emissions effectively. Together, these initiatives form a part of India’s broader strategy to transition toward a circular bioeconomy and meet its international climate commitments.

#### 9. Question

Consider the following statements regarding the BioE3 Policy:

• It promotes development of biopolymers and enzymes as alternatives to traditional petrochemical products.

• It aims to reduce carbon footprint through the promotion of carbon capture and storage technologies.

Which of the above statements is/are correct?

• (a) 1 only

• (b) 2 only

• (c) Both 1 and 2

• (d) Neither 1 nor 2

Solution: c)

• The BioE3 Policy is a comprehensive framework aimed at promoting a sustainable bioeconomy by replacing conventional fossil-fuel-based products with bio-based alternatives.

• Statement 1 is correct because the policy supports the development of biopolymers, bioenzymes, and other biomaterials to reduce dependency on petrochemicals. This aligns with the broader goals of reducing environmental impact and fostering innovation in green chemistry and biotechnology.

• Statement 2 is also correct — the policy recognizes the need to lower the carbon footprint and actively encourages the development and deployment of carbon capture, utilization, and storage (CCUS) technologies. These measures are essential to combat climate change by removing or utilizing carbon emissions effectively.

Together, these initiatives form a part of India’s broader strategy to transition toward a circular bioeconomy and meet its international climate commitments.

Solution: c)

• The BioE3 Policy is a comprehensive framework aimed at promoting a sustainable bioeconomy by replacing conventional fossil-fuel-based products with bio-based alternatives.

Together, these initiatives form a part of India’s broader strategy to transition toward a circular bioeconomy and meet its international climate commitments.

• Question 10 of 10 10. Question 1 points Which one of the following best describes the purpose of uranium enrichment? a) to increase the proportion of U-238 for weaponization b) to reduce radioactive emissions from uranium ore c) to enhance U-235 concentration for controlled nuclear fission d) to neutralize uranium’s fissile capabilities Correct Solution: c) Uranium enrichment primarily focuses on increasing the concentration of Uranium-235 (U-235), which is the isotope responsible for sustaining nuclear fission reactions. Natural uranium contains only 0.7% U-235, insufficient for most reactor operations. Standard light water reactors require 3-5% U-235, while some specialized reactors need up to 20%. Enrichment ensures a sustainable chain reaction for energy production or, at higher levels (>90%), for weapons-grade material. Incorrect Solution: c) Uranium enrichment primarily focuses on increasing the concentration of Uranium-235 (U-235), which is the isotope responsible for sustaining nuclear fission reactions. Natural uranium contains only 0.7% U-235, insufficient for most reactor operations. Standard light water reactors require 3-5% U-235, while some specialized reactors need up to 20%. Enrichment ensures a sustainable chain reaction for energy production or, at higher levels (>90%), for weapons-grade material.

#### 10. Question

Which one of the following best describes the purpose of uranium enrichment?

• a) to increase the proportion of U-238 for weaponization

• b) to reduce radioactive emissions from uranium ore

• c) to enhance U-235 concentration for controlled nuclear fission

• d) to neutralize uranium’s fissile capabilities

Solution: c)

• Uranium enrichment primarily focuses on increasing the concentration of Uranium-235 (U-235), which is the isotope responsible for sustaining nuclear fission reactions.

• Natural uranium contains only 0.7% U-235, insufficient for most reactor operations. Standard light water reactors require 3-5% U-235, while some specialized reactors need up to 20%.

• Enrichment ensures a sustainable chain reaction for energy production or, at higher levels (>90%), for weapons-grade material.

Solution: c)

• Uranium enrichment primarily focuses on increasing the concentration of Uranium-235 (U-235), which is the isotope responsible for sustaining nuclear fission reactions.

• Natural uranium contains only 0.7% U-235, insufficient for most reactor operations. Standard light water reactors require 3-5% U-235, while some specialized reactors need up to 20%.

• Enrichment ensures a sustainable chain reaction for energy production or, at higher levels (>90%), for weapons-grade material.

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