Prelims Mantra – (8th and 9th /12/2025)
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Prelims Mantra – (8th and 9th /12/2025)
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Question 1 of 5
1. Question
Consider the following statements about Benin:
1. Benin shares its borders with both Burkina Faso and Nigeria.
2. It is a member of the Economic Community of West African States (ECOWAS).
3. The recent political crisis in Benin is linked to an attempted military coup.
How many of the above statements are correct?
CorrectAnswer: C
Explanation:
Benin is located in West Africa and borders Togo (west), Burkina Faso & Niger (north), and Nigeria (east). Hence, both Burkina Faso and Nigeria share borders with Benin.
Benin is a founding member of the Economic Community of West African States (ECOWAS), a regional bloc promoting economic and political cooperation.
Benin was recently in news due to an attempted coup amid rising regional instability and concerns about democratic backsliding.
IncorrectAnswer: C
Explanation:
Benin is located in West Africa and borders Togo (west), Burkina Faso & Niger (north), and Nigeria (east). Hence, both Burkina Faso and Nigeria share borders with Benin.
Benin is a founding member of the Economic Community of West African States (ECOWAS), a regional bloc promoting economic and political cooperation.
Benin was recently in news due to an attempted coup amid rising regional instability and concerns about democratic backsliding.
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Question 2 of 5
2. Question
The Unified Payments Interface (UPI) has been recognized by the IMF for:
CorrectAnswer: B
Explanation:
UPI is recognized as the world’s largest real-time retail payment system by transaction volume, according to IMF and ACI Worldwide reports.
IncorrectAnswer: B
Explanation:
UPI is recognized as the world’s largest real-time retail payment system by transaction volume, according to IMF and ACI Worldwide reports.
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Question 3 of 5
3. Question
Consider the following statements:
1. It was declared India’s National Song in 1950.
2. All its original verses are used publicly.
3. It holds equal status with the national anthem Jana Gana Mana in terms of respect.
Which of the following statements is/are correct regarding Vande Mataram?
CorrectAnswer: B
Explanation:
Constituent Assembly declared it National Song in 1950.
Only first two stanzas are used publicly; later verses with religious imagery are omitted.
Respect for it is considered equal to the national anthem.
IncorrectAnswer: B
Explanation:
Constituent Assembly declared it National Song in 1950.
Only first two stanzas are used publicly; later verses with religious imagery are omitted.
Respect for it is considered equal to the national anthem.
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Question 4 of 5
4. Question
Consider the following statements regarding Cosmic (Galaxy) Filaments:
1. They are among the largest known structures in the Universe forming part of the cosmic web.
2. They are composed mainly of dark matter, gas, and galaxies.
3. Cosmic filaments lie inside the empty regions known as cosmic voids.
How many of the above statements are correct?
CorrectAnswer: B
Explanation:
Statement 1 is correct:
Cosmic filaments are gigantic thread-like structures forming the framework of the cosmic web.
Statement 2 is correct:
They consist primarily of dark matter, intergalactic gas, and galaxies aligned along their length.
Statement 3 is incorrect:
Cosmic filaments do not lie inside cosmic voids; they form the boundaries between voids.
Voids are the empty regions, while filaments are the dense connecting structures around them.
IncorrectAnswer: B
Explanation:
Statement 1 is correct:
Cosmic filaments are gigantic thread-like structures forming the framework of the cosmic web.
Statement 2 is correct:
They consist primarily of dark matter, intergalactic gas, and galaxies aligned along their length.
Statement 3 is incorrect:
Cosmic filaments do not lie inside cosmic voids; they form the boundaries between voids.
Voids are the empty regions, while filaments are the dense connecting structures around them.
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Question 5 of 5
5. Question
Consider the following statements regarding Neurotechnology:
1. Non-invasive neurotechnologies such as EEG rely on detecting electrical activity generated by neurons.
2. Neuroprosthetics work by replacing or enhancing functions of the nervous system.
3. All invasive neurotechnologies require direct penetration into brain tissue through cranial surgery.
4. Neurotech can be used to decode limited aspects of intention or movement from neural signals.
How many of the above statements are correct?
CorrectAnswer: C
Explanation:
Statement 1 is correct:
EEG is a non-invasive neurotechnology that measures electrical activity from neurons on the scalp.
Statement 2 is correct:
Neuroprosthetics indeed restore or enhance neural functions (e.g., cochlear implants, motor prosthetics).
Statement 3 is incorrect:
Not all invasive neurotechnologies require penetration into brain tissue.
Some involve electrodes placed on the brain surface (ECoG), which are invasive but do not penetrate brain tissue.
Statement 4 is correct:
BCIs can decode intentions, motor commands, or simple cognitive signals for communication or control.
IncorrectAnswer: C
Explanation:
Statement 1 is correct:
EEG is a non-invasive neurotechnology that measures electrical activity from neurons on the scalp.
Statement 2 is correct:
Neuroprosthetics indeed restore or enhance neural functions (e.g., cochlear implants, motor prosthetics).
Statement 3 is incorrect:
Not all invasive neurotechnologies require penetration into brain tissue.
Some involve electrodes placed on the brain surface (ECoG), which are invasive but do not penetrate brain tissue.
Statement 4 is correct:
BCIs can decode intentions, motor commands, or simple cognitive signals for communication or control.
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