Science & Technology Current Affairs MCQs
21. The black box period of human development is limited to how many days?
[A] 14 days
[B] 30 days
[C] 45 days
[D] 60 days
Show Answer
Correct Answer: A [14 days]
Notes:
Researchers have successfully generated artificial human embryos utilizing stem cells. This process bypasses the conventional requirement for eggs and sperm in the embryonic formation process.
Model embryos, which resemble those in the earliest stages of human development, could provide a crucial window on the impact of genetic disorders and the biological causes of recurrent miscarriage. The primary objective of this work is to shed light on the “black box” period of human development, which is limited to 14 days under current regulations.
22. Where is the Chromosphere located?
[A] 120 km above earth surface
[B] 200 km above earth surface
[C] Moon’s atmosphere
[D] Sun’s atmosphere
Show Answer
Correct Answer: D [Sun’s atmosphere]
Notes:
The chromosphere, located in the solar atmosphere and is a layer characterized by intense solar activity. It has a vital function in transferring non-thermal energy, which effectively heats the corona and fuels the solar wind, extending beyond the boundaries of the solar atmosphere.
According to a recent study, the bright grains detected in the chromosphere of the Sun are a result of shocks moving upwards in the solar plasma. These grains exhibit higher temperature increases than previously estimated.
23. What is the name of the new state of matter, recently discovered by physicists?
[A] Raman Ice state
[B] Chiral bose-liquid state
[C] Newton solid state
[D] Thomson gas state
Show Answer
Correct Answer: B [Chiral bose-liquid state]
Notes:
Physicists from the US and China have claimed that they have found an entirely new state of matter- The chiral bose-liquid state.
At extremely low temperatures or within the atomic realm, known as quantum states of matter, substances exhibit behavior distinct from the familiar solid, liquid, and gaseous states typically encountered.
24. What is the name of the closest supermassive black hole to the Earth?
[A] Tarzan A
[B] Sagittarius A
[C] Titan A
[D] Suzlon A
Show Answer
Correct Answer: B [Sagittarius A]
Notes:
Sagittarius A, the closest supermassive black hole to the Earth, has transitioned from a dormant state to a highly luminous state, increasing its brightness by a million times.
Located at the center of the Milky Way, this black hole, which is immensely larger than the Sun, exhibited increased activity around two centuries ago, consuming nearby cosmic objects.
25. Which company introduced ‘Perspectives’ tab feature, which allows users to explore diverse viewpoints on a particular topic?
[A] Google
[B] Microsoft
[C] Apple
[D] Samsung
Show Answer
Correct Answer: A [Google]
Notes:
Google, owned by Alphabet, introduced the ‘Perspectives’ tab feature, which allows users to explore diverse viewpoints on a particular topic. By selecting the filter, users can access a range of content such as videos from platforms like TikTok and YouTube, written posts from discussion boards and social media, and more, as explained in a blog post by Google.
26. ‘Alef Armada Model Zero’, the car that can be flown in air or driven on road, was approved in which country?
[A] Spain
[B] France
[C] USA
[D] China
Show Answer
Correct Answer: C [USA]
Notes:
Alef Armada Model Zero is a car that can be flown in the air or driven on the road. It recently received a Special Airworthiness Certification from the US Federal Aviation Administration (FAA).
Alef Aeronautics is a California company building a flying electric car. This certification means the company will now be allowed to road/air test the car.
27. Compton-Belkovich is a volcanic complex on the far side of which celestial body?
[A] Earth
[B] Moon
[C] Sun
[D] Venus
Show Answer
Correct Answer: B [Moon]
Notes:
A significant granite formation was found beneath an ancient lunar volcano known as Compton-Belkovich.
Hence, a new evidence has emerged supporting the notion that volcanic activity once occurred on the far side of the moon. This discovery strengthens the understanding of past volcanic eruptions on the moon’s far side.
28. As per a new research, the 5,000-year-old skeleton, originally presumed to belong to a man, discovered in Spain, belonged to?
[A] A baby
[B] A highly respected Woman
[C] Bonobo
[D] Chimpanzee
Show Answer
Correct Answer: B [A highly respected Woman]
Notes:
In 2017, a new technique utilizing tooth enamel analysis was employed to determine the gender of ancient skeletal remains.
This method has now revealed that a 5,000-year-old skeleton, originally presumed to belong to a man, discovered in a tomb near Seville, Spain, in 2008, actually belonged to a highly respected woman of that era.
29. As per a recent research, which disease can induce alterations in microglial cells associated with Alzheimer’s disease?
[A] Gum disease
[B] Hypertension
[C] Diabetes
[D] Skin Disease
Show Answer
Correct Answer: A [Gum disease]
Notes:
Recently, researchers have established a connection between periodontal (gum) disease and the development of amyloid plaque, a defining characteristic of Alzheimer’s disease.
The research suggests that gum disease can induce alterations in microglial cells, which play a crucial role in safeguarding the brain against amyloid plaque, a protein linked to cellular demise.
30. Which company has launched ChatGPT rival Bard in European Union, Brazil and other nations?
[A] Google
[B] Microsoft
[C] Apple
[D] Nokia
Show Answer
Correct Answer: A [Google]
Notes:
Tech Major Google has recently launched ChatGPT rival Bard in European Union, Brazil and several more nations.
In March 2023, Bard was launched in the US and the UK. Google has also now added new features to Bard, which apply worldwide. These include the ability for the chatbot to speak its answers back to you and for it to respond to prompts that also include images.
The above questions are part of Daily Current Affairs 20 MCQs Series in GKToday's Academy Android Application. This series can be subscribed in the app only for Rs. 750/- for entire year.
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