UPSC Current Affairs Quiz : 9 October 2025

The Current Affairs Quiz 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 2025 Nobel Prize in Physics: The prize was awarded for the discovery of macroscopic quantum tunnelling in electrical circuits. The phenomenon of quantum tunnelling is observable in everyday, large-scale objects if sufficient energy is applied. The work of the laureates demonstrated that Cooper pairs can tunnel through an insulating layer, creating a measurable electric current. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: B The 2025 Nobel Prize in Physics was awarded to John Clarke, Michel H. Devoret, and John Martinis for their groundbreaking work on macroscopic quantum tunnelling and energy quantisation in electric circuits. This makes statement 1 correct. Their research demonstrated that quantum effects, previously thought to be confined to the microscopic world of individual particles, could be observed in large-scale systems composed of billions of atoms. Statement 2 is incorrect. Quantum tunnelling is a phenomenon exclusive to the quantum realm and violates the principles of classical physics. It is not observable in macroscopic objects we interact with daily. Statement 3 is correct. The laureates’ experiments involved superconducting circuits where pairs of electrons, known as Cooper pairs, tunnelled across a thin insulating barrier (a Josephson junction). This flow of Cooper pairs constitutes a supercurrent that can exist even with zero applied voltage, a direct consequence of macroscopic quantum tunnelling. This discovery has been foundational for the development of superconducting quantum computing. Incorrect Solution: B The 2025 Nobel Prize in Physics was awarded to John Clarke, Michel H. Devoret, and John Martinis for their groundbreaking work on macroscopic quantum tunnelling and energy quantisation in electric circuits. This makes statement 1 correct. Their research demonstrated that quantum effects, previously thought to be confined to the microscopic world of individual particles, could be observed in large-scale systems composed of billions of atoms. Statement 2 is incorrect. Quantum tunnelling is a phenomenon exclusive to the quantum realm and violates the principles of classical physics. It is not observable in macroscopic objects we interact with daily. Statement 3 is correct. The laureates’ experiments involved superconducting circuits where pairs of electrons, known as Cooper pairs, tunnelled across a thin insulating barrier (a Josephson junction). This flow of Cooper pairs constitutes a supercurrent that can exist even with zero applied voltage, a direct consequence of macroscopic quantum tunnelling. This discovery has been foundational for the development of superconducting quantum computing.

#### 1. Question

Consider the following statements regarding the 2025 Nobel Prize in Physics:

• The prize was awarded for the discovery of macroscopic quantum tunnelling in electrical circuits.

• The phenomenon of quantum tunnelling is observable in everyday, large-scale objects if sufficient energy is applied.

• The work of the laureates demonstrated that Cooper pairs can tunnel through an insulating layer, creating a measurable electric current.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: B

• The 2025 Nobel Prize in Physics was awarded to John Clarke, Michel H. Devoret, and John Martinis for their groundbreaking work on macroscopic quantum tunnelling and energy quantisation in electric circuits. This makes statement 1 correct. Their research demonstrated that quantum effects, previously thought to be confined to the microscopic world of individual particles, could be observed in large-scale systems composed of billions of atoms.

• Statement 2 is incorrect. Quantum tunnelling is a phenomenon exclusive to the quantum realm and violates the principles of classical physics. It is not observable in macroscopic objects we interact with daily.

• Statement 3 is correct. The laureates’ experiments involved superconducting circuits where pairs of electrons, known as Cooper pairs, tunnelled across a thin insulating barrier (a Josephson junction). This flow of Cooper pairs constitutes a supercurrent that can exist even with zero applied voltage, a direct consequence of macroscopic quantum tunnelling. This discovery has been foundational for the development of superconducting quantum computing.

Solution: B

• Question 2 of 10 2. Question 1 points The primary objective of the PM-SETU scheme is to: (a) Provide financial assistance to startups in the technology sector. (b) Offer scholarships to students pursuing technical education in foreign universities. (c) Establish new ITIs in rural areas to promote vocational training. (d) Upgrade the infrastructure of government ITIs to align with industry needs and enhance global employability. Correct Solution: D The PM-SETU (Prime Minister’s Scheme for Empowerment through Technology Upgradation) scheme’s central aim is to revitalize India’s skill ecosystem. Its core objective is to upgrade 1,000 government Industrial Training Institutes (ITIs) across the nation. This upgradation is not merely about physical infrastructure but is focused on aligning the training curriculum and equipment with the current and future skill needs of industries. The ultimate goal is to bridge the gap between academic learning and practical, on-the-job requirements, thereby making India’s youth more competitive and employable on a global scale. The scheme aims to transform ITIs into modern training centers that produce a skilled workforce ready for international markets, supporting missions like Atmanirbhar Bharat. Incorrect Solution: D The PM-SETU (Prime Minister’s Scheme for Empowerment through Technology Upgradation) scheme’s central aim is to revitalize India’s skill ecosystem. Its core objective is to upgrade 1,000 government Industrial Training Institutes (ITIs) across the nation. This upgradation is not merely about physical infrastructure but is focused on aligning the training curriculum and equipment with the current and future skill needs of industries. The ultimate goal is to bridge the gap between academic learning and practical, on-the-job requirements, thereby making India’s youth more competitive and employable on a global scale. The scheme aims to transform ITIs into modern training centers that produce a skilled workforce ready for international markets, supporting missions like Atmanirbhar Bharat.

#### 2. Question

The primary objective of the PM-SETU scheme is to:

• (a) Provide financial assistance to startups in the technology sector.

• (b) Offer scholarships to students pursuing technical education in foreign universities.

• (c) Establish new ITIs in rural areas to promote vocational training.

• (d) Upgrade the infrastructure of government ITIs to align with industry needs and enhance global employability.

Solution: D

• The PM-SETU (Prime Minister’s Scheme for Empowerment through Technology Upgradation) scheme’s central aim is to revitalize India’s skill ecosystem. Its core objective is to upgrade 1,000 government Industrial Training Institutes (ITIs) across the nation. This upgradation is not merely about physical infrastructure but is focused on aligning the training curriculum and equipment with the current and future skill needs of industries.

• The ultimate goal is to bridge the gap between academic learning and practical, on-the-job requirements, thereby making India’s youth more competitive and employable on a global scale. The scheme aims to transform ITIs into modern training centers that produce a skilled workforce ready for international markets, supporting missions like Atmanirbhar Bharat.

Solution: D

• Question 3 of 10 3. Question 1 points Consider the following statements regarding the Indian Air Force (IAF): The IAF was officially established after India gained independence in 1947. The motto of the IAF, “Nabha Sparsham Deeptham,” is derived from the Bhagavad Gita. The 2025 Air Force Day celebrations marked the induction of the MiG-21 as a legacy aircraft. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: A Statement 1 is incorrect. The Indian Air Force was established on October 8, 1932, during the period of British rule in India. It was initially an auxiliary air force of the Royal Air Force. Its role and size expanded significantly over the decades, particularly during World War II. Statement 2 is correct. The motto of the IAF, “Nabha Sparsham Deeptham” (Touch the Sky with Glory), is taken from the 11th chapter of the Bhagavad Gita. It is part of the discourse given by Lord Krishna to Arjuna on the battlefield of Kurukshetra, and it reflects the IAF’s commitment to protecting the nation’s skies with valour and integrity. Statement 3 is incorrect. The 2025 Air Force Day celebrations were significant for marking the retirement, not the induction, of the MiG-21 fighter jet. The MiG-21 has been India’s longest-serving fighter aircraft, having been a stalwart of the IAF’s fleet for several decades. Its phasing out represents a transition to more modern, technologically advanced aircraft. Incorrect Solution: A Statement 1 is incorrect. The Indian Air Force was established on October 8, 1932, during the period of British rule in India. It was initially an auxiliary air force of the Royal Air Force. Its role and size expanded significantly over the decades, particularly during World War II. Statement 2 is correct. The motto of the IAF, “Nabha Sparsham Deeptham” (Touch the Sky with Glory), is taken from the 11th chapter of the Bhagavad Gita. It is part of the discourse given by Lord Krishna to Arjuna on the battlefield of Kurukshetra, and it reflects the IAF’s commitment to protecting the nation’s skies with valour and integrity. Statement 3 is incorrect. The 2025 Air Force Day celebrations were significant for marking the retirement, not the induction, of the MiG-21 fighter jet. The MiG-21 has been India’s longest-serving fighter aircraft, having been a stalwart of the IAF’s fleet for several decades. Its phasing out represents a transition to more modern, technologically advanced aircraft.

#### 3. Question

Consider the following statements regarding the Indian Air Force (IAF):

• The IAF was officially established after India gained independence in 1947.

• The motto of the IAF, “Nabha Sparsham Deeptham,” is derived from the Bhagavad Gita.

• The 2025 Air Force Day celebrations marked the induction of the MiG-21 as a legacy aircraft.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: A

• Statement 1 is incorrect. The Indian Air Force was established on October 8, 1932, during the period of British rule in India. It was initially an auxiliary air force of the Royal Air Force. Its role and size expanded significantly over the decades, particularly during World War II.

• Statement 2 is correct. The motto of the IAF, “Nabha Sparsham Deeptham” (Touch the Sky with Glory), is taken from the 11th chapter of the Bhagavad Gita. It is part of the discourse given by Lord Krishna to Arjuna on the battlefield of Kurukshetra, and it reflects the IAF’s commitment to protecting the nation’s skies with valour and integrity.

• Statement 3 is incorrect. The 2025 Air Force Day celebrations were significant for marking the retirement, not the induction, of the MiG-21 fighter jet. The MiG-21 has been India’s longest-serving fighter aircraft, having been a stalwart of the IAF’s fleet for several decades. Its phasing out represents a transition to more modern, technologically advanced aircraft.

Solution: A

• Question 4 of 10 4. Question 1 points Consider the following statements regarding Indian Air Force (IAF): Statement-I: The Indian Air Force’s first operational flight took place from a base that is currently located in Pakistan. Statement-II: At the time of the IAF’s establishment, the Indian subcontinent was undivided under British rule. Which one of the following is correct in respect of the above statements? (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I (c) Statement-I is correct but Statement-II is incorrect (d) Statement-I is incorrect but Statement-II is correct Correct Solution: A Statement-I is correct. The first operational flight of the Indian Air Force took off on April 1, 1933. The flight was conducted by No. 1 Squadron, which was based at Drigh Road in Karachi. Following the partition of India in 1947, Karachi became a major city in Pakistan, and the airbase is now part of the Pakistan Air Force’s infrastructure. Statement-II is also correct. The IAF was founded in 1932. At this time, the entire Indian subcontinent, including the territories that now form Pakistan and Bangladesh, was under British colonial administration. The political and geographical boundaries were very different from what they are today. Statement-II provides the correct explanation for Statement-I. Incorrect Solution: A Statement-I is correct. The first operational flight of the Indian Air Force took off on April 1, 1933. The flight was conducted by No. 1 Squadron, which was based at Drigh Road in Karachi. Following the partition of India in 1947, Karachi became a major city in Pakistan, and the airbase is now part of the Pakistan Air Force’s infrastructure. Statement-II is also correct. The IAF was founded in 1932. At this time, the entire Indian subcontinent, including the territories that now form Pakistan and Bangladesh, was under British colonial administration. The political and geographical boundaries were very different from what they are today. Statement-II provides the correct explanation for Statement-I.

#### 4. Question

Consider the following statements regarding Indian Air Force (IAF):

Statement-I: The Indian Air Force’s first operational flight took place from a base that is currently located in Pakistan.

Statement-II: At the time of the IAF’s establishment, the Indian subcontinent was undivided under British rule.

Which one of the following is correct in respect of the above statements?

• (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I

• (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I

• (c) Statement-I is correct but Statement-II is incorrect

• (d) Statement-I is incorrect but Statement-II is correct

Solution: A

• Statement-I is correct. The first operational flight of the Indian Air Force took off on April 1, 1933. The flight was conducted by No. 1 Squadron, which was based at Drigh Road in Karachi. Following the partition of India in 1947, Karachi became a major city in Pakistan, and the airbase is now part of the Pakistan Air Force’s infrastructure.

• Statement-II is also correct. The IAF was founded in 1932. At this time, the entire Indian subcontinent, including the territories that now form Pakistan and Bangladesh, was under British colonial administration. The political and geographical boundaries were very different from what they are today.

• Statement-II provides the correct explanation for Statement-I.

Solution: A

• Statement-II provides the correct explanation for Statement-I.

• Question 5 of 10 5. Question 1 points What is the primary significance of the Indian Radio Software Architecture (IRSA) Standard 1.0? (a) It is India's first national standard for hardware manufacturing of military radios. (b) It mandates the use of foreign software in all military communication systems to ensure global compatibility. (c) It is a communication protocol designed exclusively for the Indian Navy's submarine fleet. (d) It establishes a common software framework to ensure interoperability and waveform portability among the Software Defined Radios (SDRs) of the Indian armed forces. Correct Solution: D The core purpose of the Indian Radio Software Architecture (IRSA) Standard 1.0 is to address the challenge of communication incompatibility among the different branches of the Indian military. It is India’s first national software architecture standard for Software Defined Radios (SDRs). By providing a unified software framework, IRSA 1.0 ensures that radios used by the Army, Navy, and Air Force can communicate with each other seamlessly. This is known as interoperability. Furthermore, it allows for waveform portability, meaning a communication waveform developed for one SDR platform can be easily reused on another, saving significant time and resources. This standardization is a crucial step towards achieving strategic autonomy by reducing dependence on foreign systems and enhancing joint operational synergy among the tri-services. Incorrect Solution: D The core purpose of the Indian Radio Software Architecture (IRSA) Standard 1.0 is to address the challenge of communication incompatibility among the different branches of the Indian military. It is India’s first national software architecture standard for Software Defined Radios (SDRs). By providing a unified software framework, IRSA 1.0 ensures that radios used by the Army, Navy, and Air Force can communicate with each other seamlessly. This is known as interoperability. Furthermore, it allows for waveform portability, meaning a communication waveform developed for one SDR platform can be easily reused on another, saving significant time and resources. This standardization is a crucial step towards achieving strategic autonomy by reducing dependence on foreign systems and enhancing joint operational synergy among the tri-services.

#### 5. Question

What is the primary significance of the Indian Radio Software Architecture (IRSA) Standard 1.0?

• (a) It is India's first national standard for hardware manufacturing of military radios.

• (b) It mandates the use of foreign software in all military communication systems to ensure global compatibility.

• (c) It is a communication protocol designed exclusively for the Indian Navy's submarine fleet.

• (d) It establishes a common software framework to ensure interoperability and waveform portability among the Software Defined Radios (SDRs) of the Indian armed forces.

Solution: D

• The core purpose of the Indian Radio Software Architecture (IRSA) Standard 1.0 is to address the challenge of communication incompatibility among the different branches of the Indian military. It is India’s first national software architecture standard for Software Defined Radios (SDRs). By providing a unified software framework, IRSA 1.0 ensures that radios used by the Army, Navy, and Air Force can communicate with each other seamlessly. This is known as interoperability.

• Furthermore, it allows for waveform portability, meaning a communication waveform developed for one SDR platform can be easily reused on another, saving significant time and resources. This standardization is a crucial step towards achieving strategic autonomy by reducing dependence on foreign systems and enhancing joint operational synergy among the tri-services.

Solution: D

• Question 6 of 10 6. Question 1 points Consider the following statements about the India Mobile Congress (IMC) 2025: It is exclusively organized by the Department of Telecommunications (DoT), Government of India. The theme for the 2025 edition was “Innovate to Transform”. The event focuses solely on showcasing advancements in 5G technology. One of the aims of IMC 2025 is to attract investment in India’s digital economy and promote indigenous technology. How many of the above statements are correct? (a) Only one (b) Only two (c) Only three (d) All four Correct Solution: B Statement 1 is incorrect. The India Mobile Congress is not organized solely by the government. It is a joint initiative, organized by the Department of Telecommunications (DoT) and the Cellular Operators Association of India (COAI), which is an industry body. This public-private collaboration is key to the event’s success. Statement 2 is correct. The theme for the 9th edition of the IMC in 2025 was “Innovate to Transform”. This theme reflects the event’s focus on showcasing how technological innovation is driving fundamental changes across industries and society. Statement 3 is incorrect. While 5G is a major focus, the IMC is a broad-based technology forum. The 2025 edition covered a wide range of technologies beyond 5G, including 6G, AI, semiconductors, quantum communication, cybersecurity, and green tech. It is Asia’s largest telecom, media, and technology forum, not just a 5G exhibition. Statement 4 is correct. A primary objective of the IMC is to position India as a global technology leader. This involves attracting global investment into the country’s burgeoning digital economy. The platform also heavily promotes indigenous research, innovation, and manufacturing, in line with government initiatives like Digital India and Atmanirbhar Bharat. Incorrect Solution: B Statement 1 is incorrect. The India Mobile Congress is not organized solely by the government. It is a joint initiative, organized by the Department of Telecommunications (DoT) and the Cellular Operators Association of India (COAI), which is an industry body. This public-private collaboration is key to the event’s success. Statement 2 is correct. The theme for the 9th edition of the IMC in 2025 was “Innovate to Transform”. This theme reflects the event’s focus on showcasing how technological innovation is driving fundamental changes across industries and society. Statement 3 is incorrect. While 5G is a major focus, the IMC is a broad-based technology forum. The 2025 edition covered a wide range of technologies beyond 5G, including 6G, AI, semiconductors, quantum communication, cybersecurity, and green tech. It is Asia’s largest telecom, media, and technology forum, not just a 5G exhibition. Statement 4 is correct. A primary objective of the IMC is to position India as a global technology leader. This involves attracting global investment into the country’s burgeoning digital economy. The platform also heavily promotes indigenous research, innovation, and manufacturing, in line with government initiatives like Digital India and Atmanirbhar Bharat.

#### 6. Question

Consider the following statements about the India Mobile Congress (IMC) 2025:

• It is exclusively organized by the Department of Telecommunications (DoT), Government of India.

• The theme for the 2025 edition was “Innovate to Transform”.

• The event focuses solely on showcasing advancements in 5G technology.

• One of the aims of IMC 2025 is to attract investment in India’s digital economy and promote indigenous technology.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) Only three

• (d) All four

Solution: B

• Statement 1 is incorrect. The India Mobile Congress is not organized solely by the government. It is a joint initiative, organized by the Department of Telecommunications (DoT) and the Cellular Operators Association of India (COAI), which is an industry body. This public-private collaboration is key to the event’s success.

• Statement 2 is correct. The theme for the 9th edition of the IMC in 2025 was “Innovate to Transform”. This theme reflects the event’s focus on showcasing how technological innovation is driving fundamental changes across industries and society.

• Statement 3 is incorrect. While 5G is a major focus, the IMC is a broad-based technology forum. The 2025 edition covered a wide range of technologies beyond 5G, including 6G, AI, semiconductors, quantum communication, cybersecurity, and green tech. It is Asia’s largest telecom, media, and technology forum, not just a 5G exhibition.

• Statement 4 is correct. A primary objective of the IMC is to position India as a global technology leader. This involves attracting global investment into the country’s burgeoning digital economy. The platform also heavily promotes indigenous research, innovation, and manufacturing, in line with government initiatives like Digital India and Atmanirbhar Bharat.

Solution: B

• Question 7 of 10 7. Question 1 points Consider the following statements regarding the European Union’s Entry/Exit System (EES): The EES is applicable to all foreign nationals entering the Schengen Area, including EU citizens. The system replaces manual passport stamping with an automated, biometric registration process. Which of the above statements are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 Correct Solution: B Statement 1 is incorrect. The Entry/Exit System (EES) is specifically designed for non-European Union citizens. It applies to third-country nationals, including those from the UK, who are visiting the Schengen Area for a short stay (up to 90 days in any 180-day period). EU citizens are not subject to the EES as they have freedom of movement within the zone. Statement 2 is correct. A key feature of the EES is the modernization of border control. It replaces the traditional and time-consuming process of manually stamping passports. Instead, it will use an automated system to record travellers’ biometric data (fingerprints and facial images) and electronically log their entry and exit dates, making the process more efficient and accurate. Incorrect Solution: B Statement 1 is incorrect. The Entry/Exit System (EES) is specifically designed for non-European Union citizens. It applies to third-country nationals, including those from the UK, who are visiting the Schengen Area for a short stay (up to 90 days in any 180-day period). EU citizens are not subject to the EES as they have freedom of movement within the zone. Statement 2 is correct. A key feature of the EES is the modernization of border control. It replaces the traditional and time-consuming process of manually stamping passports. Instead, it will use an automated system to record travellers’ biometric data (fingerprints and facial images) and electronically log their entry and exit dates, making the process more efficient and accurate.

#### 7. Question

Consider the following statements regarding the European Union’s Entry/Exit System (EES):

• The EES is applicable to all foreign nationals entering the Schengen Area, including EU citizens.

• The system replaces manual passport stamping with an automated, biometric registration process.

Which of the above statements are correct?

• (a) 1 only

• (b) 2 only

• (c) Both 1 and 2

• (d) Neither 1 nor 2

Solution: B

• Statement 1 is incorrect. The Entry/Exit System (EES) is specifically designed for non-European Union citizens. It applies to third-country nationals, including those from the UK, who are visiting the Schengen Area for a short stay (up to 90 days in any 180-day period). EU citizens are not subject to the EES as they have freedom of movement within the zone.

• Statement 2 is correct. A key feature of the EES is the modernization of border control. It replaces the traditional and time-consuming process of manually stamping passports. Instead, it will use an automated system to record travellers’ biometric data (fingerprints and facial images) and electronically log their entry and exit dates, making the process more efficient and accurate.

Solution: B

• Question 8 of 10 8. Question 1 points Match the following: Column I (Geographical Feature) Column II (Description) A. Bab el-Mandeb Strait 1. A tectonic valley system where the Red Sea is located. B. Gulf of Aden 2. Connects the Red Sea to the Arabian Sea. C. East African Rift System 3. A narrow maritime chokepoint connecting the Red Sea to the Gulf of Aden. Select the correct answer using the code given below: (a) A-3, B-1, C-2 (b) A-1, B-2, C-3 (c) A-2, B-1, C-3 (d) A-3, B-2, C-1 Correct Solution: D Bab el-Mandeb Strait: This is a crucial and narrow maritime chokepoint. It is the strait that connects the Red Sea to the Gulf of Aden (3). Gulf of Aden: This is a gulf located in the Arabian Sea. It lies south of the Arabian Peninsula and north of the Horn of Africa. The Bab el-Mandeb Strait connects the Red Sea to this gulf, which then leads into the wider Arabian Sea (2). East African Rift System: This is a major geological feature, an active continental rift zone where the African plate is in the process of splitting into two smaller plates. The Red Sea itself is a rift valley that forms a part of this larger system, marking the separation of the African and Arabian tectonic plates. This matches with a tectonic valley system where the Red Sea is located (1). Incorrect Solution: D Bab el-Mandeb Strait: This is a crucial and narrow maritime chokepoint. It is the strait that connects the Red Sea to the Gulf of Aden (3). Gulf of Aden: This is a gulf located in the Arabian Sea. It lies south of the Arabian Peninsula and north of the Horn of Africa. The Bab el-Mandeb Strait connects the Red Sea to this gulf, which then leads into the wider Arabian Sea (2). East African Rift System: This is a major geological feature, an active continental rift zone where the African plate is in the process of splitting into two smaller plates. The Red Sea itself is a rift valley that forms a part of this larger system, marking the separation of the African and Arabian tectonic plates. This matches with a tectonic valley system where the Red Sea is located (1).

#### 8. Question

Match the following:

Column I (Geographical Feature) | Column II (Description)

A. Bab el-Mandeb Strait | 1. A tectonic valley system where the Red Sea is located.

B. Gulf of Aden | 2. Connects the Red Sea to the Arabian Sea.

C. East African Rift System | 3. A narrow maritime chokepoint connecting the Red Sea to the Gulf of Aden.

Select the correct answer using the code given below:

• (a) A-3, B-1, C-2

• (b) A-1, B-2, C-3

• (c) A-2, B-1, C-3

• (d) A-3, B-2, C-1

Solution: D

• Bab el-Mandeb Strait: This is a crucial and narrow maritime chokepoint. It is the strait that connects the Red Sea to the Gulf of Aden (3).

• Gulf of Aden: This is a gulf located in the Arabian Sea. It lies south of the Arabian Peninsula and north of the Horn of Africa. The Bab el-Mandeb Strait connects the Red Sea to this gulf, which then leads into the wider Arabian Sea (2).

• East African Rift System: This is a major geological feature, an active continental rift zone where the African plate is in the process of splitting into two smaller plates. The Red Sea itself is a rift valley that forms a part of this larger system, marking the separation of the African and Arabian tectonic plates. This matches with a tectonic valley system where the Red Sea is located (1).

Solution: D

• Bab el-Mandeb Strait: This is a crucial and narrow maritime chokepoint. It is the strait that connects the Red Sea to the Gulf of Aden (3).

• Question 9 of 10 9. Question 1 points Which of the following factors contributes most significantly to the high salinity and temperature of the Red Sea? (a) The inflow of several large rivers and extensive rainfall. (b) Its connection to the Mediterranean Sea via the Suez Canal. (c) High rates of evaporation combined with minimal freshwater inflow from rivers or precipitation. (d) Deep underwater volcanic activity heating the entire water body. Correct Solution: C The Red Sea is one of the world’s saltiest and warmest seas. The primary reasons for these characteristics are climatological and geographical. The sea is located in a hot, arid region, which leads to very high rates of evaporation from its surface. This process removes freshwater, leaving the salt behind and increasing the water’s salinity. Compounding this effect is the minimal inflow of freshwater. There are no major, perennial rivers that flow into the Red Sea, and the region receives very little rainfall. This combination of high water loss through evaporation and negligible water gain from freshwater sources is the most significant contributor to its high salinity and temperature. Incorrect Solution: C The Red Sea is one of the world’s saltiest and warmest seas. The primary reasons for these characteristics are climatological and geographical. The sea is located in a hot, arid region, which leads to very high rates of evaporation from its surface. This process removes freshwater, leaving the salt behind and increasing the water’s salinity. Compounding this effect is the minimal inflow of freshwater. There are no major, perennial rivers that flow into the Red Sea, and the region receives very little rainfall. This combination of high water loss through evaporation and negligible water gain from freshwater sources is the most significant contributor to its high salinity and temperature.

#### 9. Question

Which of the following factors contributes most significantly to the high salinity and temperature of the Red Sea?

• (a) The inflow of several large rivers and extensive rainfall.

• (b) Its connection to the Mediterranean Sea via the Suez Canal.

• (c) High rates of evaporation combined with minimal freshwater inflow from rivers or precipitation.

• (d) Deep underwater volcanic activity heating the entire water body.

Solution: C

• The Red Sea is one of the world’s saltiest and warmest seas. The primary reasons for these characteristics are climatological and geographical. The sea is located in a hot, arid region, which leads to very high rates of evaporation from its surface. This process removes freshwater, leaving the salt behind and increasing the water’s salinity. Compounding this effect is the minimal inflow of freshwater.

• There are no major, perennial rivers that flow into the Red Sea, and the region receives very little rainfall. This combination of high water loss through evaporation and negligible water gain from freshwater sources is the most significant contributor to its high salinity and temperature.

Solution: C

• Question 10 of 10 10. Question 1 points Consider the following statements regarding AstroSat: It is India’s first dedicated multi-wavelength space astronomy observatory. It was launched using the GSLV-Mk III launch vehicle. It is a collaborative project solely between ISRO and various Indian research institutes. AstroSat’s data is exclusively available to Indian scientists. How many of the above statements are correct? (a) Only one (b) Only two (c) Only three (d) All four Correct Solution: A AstroSat represents a major milestone in India’s space science program. Statement 1 is correct as it is India’s first multi-wavelength space observatory, capable of simultaneous observations in the ultraviolet, visible, soft X-ray, and hard X-ray bands. This capability allows for a more comprehensive study of celestial objects. Statement 2 is incorrect; AstroSat was launched on September 28, 2015, by the Polar Satellite Launch Vehicle (PSLV-C30), not the GSLV-Mk III. The PSLV is ISRO’s workhorse launch vehicle, known for its reliability. Statement 3 is incorrect because while it is a collaborative project of ISRO and premier Indian research institutes, it also involves international partners, specifically from Canada and the United Kingdom, who contributed to the development of some of its instruments. Statement 4 is also incorrect; the data from AstroSat is made available through open access to scientists worldwide, fostering global collaboration in astronomy research. Incorrect Solution: A AstroSat represents a major milestone in India’s space science program. Statement 1 is correct as it is India’s first multi-wavelength space observatory, capable of simultaneous observations in the ultraviolet, visible, soft X-ray, and hard X-ray bands. This capability allows for a more comprehensive study of celestial objects. Statement 2 is incorrect; AstroSat was launched on September 28, 2015, by the Polar Satellite Launch Vehicle (PSLV-C30), not the GSLV-Mk III. The PSLV is ISRO’s workhorse launch vehicle, known for its reliability. Statement 3 is incorrect because while it is a collaborative project of ISRO and premier Indian research institutes, it also involves international partners, specifically from Canada and the United Kingdom, who contributed to the development of some of its instruments. Statement 4 is also incorrect; the data from AstroSat is made available through open access to scientists worldwide, fostering global collaboration in astronomy research.

#### 10. Question

Consider the following statements regarding AstroSat:

• It is India’s first dedicated multi-wavelength space astronomy observatory.

• It was launched using the GSLV-Mk III launch vehicle.

• It is a collaborative project solely between ISRO and various Indian research institutes.

• AstroSat’s data is exclusively available to Indian scientists.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) Only three

• (d) All four

Solution: A

• AstroSat represents a major milestone in India’s space science program.

• Statement 1 is correct as it is India’s first multi-wavelength space observatory, capable of simultaneous observations in the ultraviolet, visible, soft X-ray, and hard X-ray bands. This capability allows for a more comprehensive study of celestial objects.

• Statement 2 is incorrect; AstroSat was launched on September 28, 2015, by the Polar Satellite Launch Vehicle (PSLV-C30), not the GSLV-Mk III. The PSLV is ISRO’s workhorse launch vehicle, known for its reliability.

• Statement 3 is incorrect because while it is a collaborative project of ISRO and premier Indian research institutes, it also involves international partners, specifically from Canada and the United Kingdom, who contributed to the development of some of its instruments.

• Statement 4 is also incorrect; the data from AstroSat is made available through open access to scientists worldwide, fostering global collaboration in astronomy research.

Solution: A

• AstroSat represents a major milestone in India’s space science program.

• Statement 4 is also incorrect; the data from AstroSat is made available through open access to scientists worldwide, fostering global collaboration in astronomy research.

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