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Question 1 of 5
1. Question
2 points
With reference to “asteroids”, consider the following statements:
Asteroids are formed of frozen gases held together by rocky and metallic material.
Stony S-type asteroids are the most common asteroid type, followed by carbonaceous C-type asteroids and rarer metallic M-type asteroids.
If the Earth collides with large asteroids, an increasein temperatures on Earth is observed.
Select the incorrect answer using the codes given below:
Correct
Ans: D
Exp:
Recently, a study published in Journal Science confirmed that the asteroid causing the dinosaur extinction 66 million years ago originated beyond Jupiter’s orbit.
By analysing sediment samples and ruthenium isotopes, researchers identified the impactor as a carbonaceous asteroid or C-type asteroid, dismissing previous comet theories. These findings deepen the understanding of celestial impacts and Earth’s history.
Statement 1 is incorrect: Asteroids are sometimes also called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago.
Comets are formed of frozen gases held together by rocky and metallic material.
Statement 2 is incorrect: Carbonaceous C-type asteroids, among the solar system’s most ancient objects, are the most common asteroid type, followed by stony S-type asteroids and rarer metallic M-type asteroids.
Compositional differences among asteroids arise from how far from the sun they formed.
Statement 3 is incorrect: If an asteroid’s normal orbit is disrupted, a collision with Earth is highly unlikely.
A 2021 study found that Earth is likely to collide with large asteroids only once in 250 million years. While such a collision is unlikely to take place in humanity’s lifetime, if it does occur, it will be deadly.
The massive volumes of sulfur, dust and soot that the asteroid-impact threw in the air, partially blocked the Sun, and caused decrease in temperatures on Earth and impaired photosynthesis in plants and phytoplankton.
This caused massive disruptions in the ecosystem that, in the end, very few creatures could survive.
Incorrect
Ans: D
Exp:
Recently, a study published in Journal Science confirmed that the asteroid causing the dinosaur extinction 66 million years ago originated beyond Jupiter’s orbit.
By analysing sediment samples and ruthenium isotopes, researchers identified the impactor as a carbonaceous asteroid or C-type asteroid, dismissing previous comet theories. These findings deepen the understanding of celestial impacts and Earth’s history.
Statement 1 is incorrect: Asteroids are sometimes also called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago.
Comets are formed of frozen gases held together by rocky and metallic material.
Statement 2 is incorrect: Carbonaceous C-type asteroids, among the solar system’s most ancient objects, are the most common asteroid type, followed by stony S-type asteroids and rarer metallic M-type asteroids.
Compositional differences among asteroids arise from how far from the sun they formed.
Statement 3 is incorrect: If an asteroid’s normal orbit is disrupted, a collision with Earth is highly unlikely.
A 2021 study found that Earth is likely to collide with large asteroids only once in 250 million years. While such a collision is unlikely to take place in humanity’s lifetime, if it does occur, it will be deadly.
The massive volumes of sulfur, dust and soot that the asteroid-impact threw in the air, partially blocked the Sun, and caused decrease in temperatures on Earth and impaired photosynthesis in plants and phytoplankton.
This caused massive disruptions in the ecosystem that, in the end, very few creatures could survive.
Question 2 of 5
2. Question
2 points
Which of the following is/are cited by the scientists as evidence/evidences for the continued expansion of the Universe?
Detection of microwaves in space
Observation of redshift phenomenon in space
Movement of asteroids in space
Occurrence of supernova explosions in space
Observation of blueshift phenomenon in space
Select the correct answer using the codes given below:
Correct
Ans: A
Exp:
Images from the James Webb Space Telescope (JWST) are puzzling– instead of newborn galaxies, the early phases of the Universe appear to be full of adult-sized galaxies.
Also, the rate at which the Universe is expanding, as measured by the space telescope, also differs from expectations.
About Expansion of the Universe: This concept of expansion of the Universe was first proposed by Georges Lemaitre in the 1920s and later supported by Edwin Hubble’s observations.
It refers to increasing distance between galaxies over time, leading to the stretching of space itself.
Evidence for Cosmic Expansion:
Hubble’s Law: It states that galaxies are receding from us, with their redshift proportional to their distance, indicates universal expansion.
Redshift: When an object is moving away from us, the light from the object is known as redshift.
Blueshift: When an object is moving towards us, the light from the object is known as blueshift.
Cosmic Microwave Background (CMB): An echo of the Big Bang, the CMB radiation is uniformly distributed and provides evidence of the universe’s early hot and dense state.
Large-Scale Structure: Observations of the distribution of galaxies and galaxy clusters show a web-like structure, consistent with an expanding universe.
Movement of asteroids in space may provide information regarding the type of material in the early universe, but as such no evidence regarding the expanding universe is provided.
The supernova explosion occurs when there is a change in the core, or centre, of a star. It helps in studying the distribution of elements throughout the universe. However, it does not provide any evidence for expansion of the universe.
Incorrect
Ans: A
Exp:
Images from the James Webb Space Telescope (JWST) are puzzling– instead of newborn galaxies, the early phases of the Universe appear to be full of adult-sized galaxies.
Also, the rate at which the Universe is expanding, as measured by the space telescope, also differs from expectations.
About Expansion of the Universe: This concept of expansion of the Universe was first proposed by Georges Lemaitre in the 1920s and later supported by Edwin Hubble’s observations.
It refers to increasing distance between galaxies over time, leading to the stretching of space itself.
Evidence for Cosmic Expansion:
Hubble’s Law: It states that galaxies are receding from us, with their redshift proportional to their distance, indicates universal expansion.
Redshift: When an object is moving away from us, the light from the object is known as redshift.
Blueshift: When an object is moving towards us, the light from the object is known as blueshift.
Cosmic Microwave Background (CMB): An echo of the Big Bang, the CMB radiation is uniformly distributed and provides evidence of the universe’s early hot and dense state.
Large-Scale Structure: Observations of the distribution of galaxies and galaxy clusters show a web-like structure, consistent with an expanding universe.
Movement of asteroids in space may provide information regarding the type of material in the early universe, but as such no evidence regarding the expanding universe is provided.
The supernova explosion occurs when there is a change in the core, or centre, of a star. It helps in studying the distribution of elements throughout the universe. However, it does not provide any evidence for expansion of the universe.
Question 3 of 5
3. Question
2 points
With reference to the United Nations Conference on Trade and Development (UNCTAD), consider the following statements:
It is a permanent intergovernmental body established by the United Nations General Assembly.
It published the World Investment Report.
India has never hosted the UNCTAD Conference.
How many of the statements given above is/are correct?
Correct
Ans: B
Exp:
Recently, the United Nations Conference on Trade and Development (UNCTAD) has released the World Investment Report 2024.
Statement 1 is correct: UNCTAD is a permanent intergovernmental body established by the United Nations General Assembly in 1964.
It isheadquartered in Geneva, Switzerland.
UNCTAD is part of the UN Secretariat and United Nations Development Group.
It reports to the UN General Assembly and the Economic and Social Council.
Statement 2 is correct: Reports published by the UNCTAD are:
World Investment Report
Digital Economy Report
Commodities and Development Report
Trade and Development Report
The Least Developed Countries Report
Information and Economy Report
Technology and Innovation Report
Statement 3 is incorrect: The second UNCTAD Conference was held in 1968 and was hosted by India.
The UNCTAD Conference ordinarily meets once in four years.
Incorrect
Ans: B
Exp:
Recently, the United Nations Conference on Trade and Development (UNCTAD) has released the World Investment Report 2024.
Statement 1 is correct: UNCTAD is a permanent intergovernmental body established by the United Nations General Assembly in 1964.
It isheadquartered in Geneva, Switzerland.
UNCTAD is part of the UN Secretariat and United Nations Development Group.
It reports to the UN General Assembly and the Economic and Social Council.
Statement 2 is correct: Reports published by the UNCTAD are:
World Investment Report
Digital Economy Report
Commodities and Development Report
Trade and Development Report
The Least Developed Countries Report
Information and Economy Report
Technology and Innovation Report
Statement 3 is incorrect: The second UNCTAD Conference was held in 1968 and was hosted by India.
The UNCTAD Conference ordinarily meets once in four years.
Question 4 of 5
4. Question
2 points
With reference to “Gross Environment Product Index (GEPI)”, consider the following statements:
Kerala has become the first Indian state to launch GEPI.
GEPI has four pillars comprising air, soil, tree and water.
Select the correct answer using the codes given below:
Correct
Ans: B
Exp:
Recently, Uttarakhand launched a Gross Environment Product Index, the first in the world to go beyond ecosystem services to ecosystem growth.
Statement 1 is incorrect: Uttarakhand (not Kerala) has become the first Indian state to launch GEPI.
Statement 2 is correct: There are four pillars of the Gross Environment Product Index- air, soil, tree and water.
The formula of GEP index = Air-GEP index + Water-GEP index + Soil-GEP index + Forest-GEP index
The index will help to assess the impact of anthropological pressure on the ecosystem and natural resources.
Incorrect
Ans: B
Exp:
Recently, Uttarakhand launched a Gross Environment Product Index, the first in the world to go beyond ecosystem services to ecosystem growth.
Statement 1 is incorrect: Uttarakhand (not Kerala) has become the first Indian state to launch GEPI.
Statement 2 is correct: There are four pillars of the Gross Environment Product Index- air, soil, tree and water.
The formula of GEP index = Air-GEP index + Water-GEP index + Soil-GEP index + Forest-GEP index
The index will help to assess the impact of anthropological pressure on the ecosystem and natural resources.
Question 5 of 5
5. Question
2 points
With reference to “Graphics Processing Unit (GPU)”, consider the following statements:
It is a chip component found in computing devices similar to a Central Processing Unit (CPU).
It is a specialized electronic circuit in a computer that speeds up the processing of images and videos in a computer system.
Select the correct answer using the codes given below:
Correct
Ans: C
Exp:
Recently, the government is preparing to buy 1,000 Graphics Processing Units (GPUs) as part of the IndiaAI Mission.
IndiaAI is a government-backed initiative aimed at boosting artificial intelligence (AI) research and development in India.
Statement 1 is correct: Graphics Processing Unit (GPU) is a chip component found in computing devices similar to a Central Processing Unit (CPU)
A GPU is simply a small part of the central processing unit (CPU) within computers which was used exclusively for graphics and video rendering initially.
Statement 2 is correct: A GPU is a specialized electronic circuit in a computer that speeds up the processing of images and videos in a computer system.
Initially created for graphics tasks, GPUs have transformed into potent parallel processors with applications extending beyond visual computing.
This in-depth exploration will cover the history, architecture, operation, and various uses of GPUs.
Incorrect
Ans: C
Exp:
Recently, the government is preparing to buy 1,000 Graphics Processing Units (GPUs) as part of the IndiaAI Mission.
IndiaAI is a government-backed initiative aimed at boosting artificial intelligence (AI) research and development in India.
Statement 1 is correct: Graphics Processing Unit (GPU) is a chip component found in computing devices similar to a Central Processing Unit (CPU)
A GPU is simply a small part of the central processing unit (CPU) within computers which was used exclusively for graphics and video rendering initially.
Statement 2 is correct: A GPU is a specialized electronic circuit in a computer that speeds up the processing of images and videos in a computer system.
Initially created for graphics tasks, GPUs have transformed into potent parallel processors with applications extending beyond visual computing.
This in-depth exploration will cover the history, architecture, operation, and various uses of GPUs.
Comprehensive coverage with a concise format Integration of PYQ within the booklet Designed as per recent trends of Prelims questions हिंदी में भी उपलब्ध
Quick Revise Now ! UDAAN PRELIMS WALLAH
Comprehensive coverage with a concise format Integration of PYQ within the booklet Designed as per recent trends of Prelims questions हिंदी में भी उपलब्ध
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