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Question 1 of 5
1. Question
2 points1. Consider the following statements about Dry Ice:
1. It is the solid form of Nitrogen.
2. It is used primarily as a cooling agent.
3. It has a lower temperature than that of water ice and does not leave any residue.
Which of the statements given above is/are correct?Correct
Answer: C
Explanation:
The Delhi Police chargesheet filed against AaftabPoonawala, accused of killing his live-in partner Shraddha Walkar. According to it, purchase of 11 kgs of dry ice has also been listed as evidence against Aaftab, claiming that he “needed this dry ice to preserve the body parts of Shraddha”.
Dry ice, sometimes referred to as “Cardice” or as “card ice” is the solid form of carbon dioxide.
• It is used primarily as a cooling agent.
• Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere).
• It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.Incorrect
Answer: C
Explanation:
The Delhi Police chargesheet filed against AaftabPoonawala, accused of killing his live-in partner Shraddha Walkar. According to it, purchase of 11 kgs of dry ice has also been listed as evidence against Aaftab, claiming that he “needed this dry ice to preserve the body parts of Shraddha”.
Dry ice, sometimes referred to as “Cardice” or as “card ice” is the solid form of carbon dioxide.
• It is used primarily as a cooling agent.
• Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere).
• It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable. -
Question 2 of 5
2. Question
2 points2. Which of the following is/are correct with reference to Adenosine triphosphate (ATP)?
1. It is produced during the process of cellular respiration.
2. It provides the energy needed to drive the exothermic reactions in the cell.
Select the correct answer using the code given below:Correct
Answer: A
Explanation:
Of late, many people have been reaching out to me with this common problem low energy levels and extreme fatigue that has started affecting them post a COVID diagnosis. COVID-19 is a viral infection that affects our body at a cellular level and can lead to mitochondrial dysfunction, energy production takes place in the mitochondria of the cell which takes up chemical energy from food and converts energy into ATP (Adenosine Triphosphate), which is utilised by the cell.
• Adenosine triphosphate (ATP) is the energy currency for most cellular processes. The energy released during the process of cellular respiration is used to make an ATP molecule from ADP and inorganic phosphate.
• Endothermic processes (processes that consume energy) in the cell then use this ATP to drive the reactions. When the terminal phosphate linkage in ATP is broken using water, the energy equivalent to 30.5 kJ/mol is released.Incorrect
Answer: A
Explanation:
Of late, many people have been reaching out to me with this common problem low energy levels and extreme fatigue that has started affecting them post a COVID diagnosis. COVID-19 is a viral infection that affects our body at a cellular level and can lead to mitochondrial dysfunction, energy production takes place in the mitochondria of the cell which takes up chemical energy from food and converts energy into ATP (Adenosine Triphosphate), which is utilised by the cell.
• Adenosine triphosphate (ATP) is the energy currency for most cellular processes. The energy released during the process of cellular respiration is used to make an ATP molecule from ADP and inorganic phosphate.
• Endothermic processes (processes that consume energy) in the cell then use this ATP to drive the reactions. When the terminal phosphate linkage in ATP is broken using water, the energy equivalent to 30.5 kJ/mol is released. -
Question 3 of 5
3. Question
2 points3. Imagine a day in the office where you teleport yourself to Shanghai for a meeting with your lead engineer, to the Poconos for a meeting with your boss and to an imagined Fairy Tale land for a meeting with a vendor partner. You can witness the live environment of the launching event of your favorite Apple smart phone from the comfort of your bedroom. Therapists can provide exposure therapy to patients, so they can experience the situations that frighten them in a safe, controlled environment from any distance. We’ll get to experience places we’ve never seen before while being completely immersed in the environment. We won’t just be looking at the place where the meeting is held. Instead, we will be living and experiencing it as if we are truly there. There will be no barriers between environments as we can simply shift between them.
In the context of emerging technologies, which one of the following terms best applies to the above scenario?Correct
Answer: C
Explanation:
● The metaverse conglomerates various technology elements at a basic level, including video, augmented reality (AR) and virtual reality (VR), where users can exist within a digital world. The metaverse concept draws its strength from a vision where users can play, work and stay “connected” with others, ranging from work events, conferences, virtual vacations and entertainment events.
● It is a virtual reality/augmented reality universe that helps you build social connections virtually. The term metaverse was coined by Neal Stephenson in a science fiction novel ‘Snow Crash’ in 1992, in which he envisioned lifelike avatars who met in realistic 3D buildings and other virtual reality environments, but this virtual world got recognition when Facebook, now known as Meta, adopted the new moniker, based on the sci-fi term metaverse, to describe its vision for working and playing in a virtual world.
● Broadly speaking, the technologies that comprise the metaverse can include virtual reality (VR) – characterized by persistent virtual worlds that continue to exist even when you’re not playing – as well as augmented reality (AR) which combines features of the digital and physical worlds. However, it doesn’t require that those spaces be exclusively accessed via VR or AR.Incorrect
Answer: C
Explanation:
● The metaverse conglomerates various technology elements at a basic level, including video, augmented reality (AR) and virtual reality (VR), where users can exist within a digital world. The metaverse concept draws its strength from a vision where users can play, work and stay “connected” with others, ranging from work events, conferences, virtual vacations and entertainment events.
● It is a virtual reality/augmented reality universe that helps you build social connections virtually. The term metaverse was coined by Neal Stephenson in a science fiction novel ‘Snow Crash’ in 1992, in which he envisioned lifelike avatars who met in realistic 3D buildings and other virtual reality environments, but this virtual world got recognition when Facebook, now known as Meta, adopted the new moniker, based on the sci-fi term metaverse, to describe its vision for working and playing in a virtual world.
● Broadly speaking, the technologies that comprise the metaverse can include virtual reality (VR) – characterized by persistent virtual worlds that continue to exist even when you’re not playing – as well as augmented reality (AR) which combines features of the digital and physical worlds. However, it doesn’t require that those spaces be exclusively accessed via VR or AR. -
Question 4 of 5
4. Question
2 points4. Recently researchers in the US have developed a novel strategy in Oncolytic Virotherapy (OV) which is said to be a watershed moment in medical science. The Oncolytic Virotherapy (OV) is related to the treatment of which of the following?
Correct
Answer: A
Explanation:
Researchers in the US have developed a novel strategy in Oncolytic Virotherapy (OV) to improve a cancer therapy that can kill tumor cells while leaving nearby healthy tissues intact.
• Oncolytic viruses can kill cancer cells while leaving nearby healthy cells and tissues intact. In oncolytic virotherapy, the treatment also exerts its influence by activating an antitumor immune response made of immune cells such as Natural Killer (NK) cells.
• However, sometimes those natural killers limit the oncolytic viruses, and so despite the exciting development in the OV field in recent years, there is room for improvement to tackle some limitations, including the relatively weak therapeutic activity and lack of means for effective systemic delivery.Incorrect
Answer: A
Explanation:
Researchers in the US have developed a novel strategy in Oncolytic Virotherapy (OV) to improve a cancer therapy that can kill tumor cells while leaving nearby healthy tissues intact.
• Oncolytic viruses can kill cancer cells while leaving nearby healthy cells and tissues intact. In oncolytic virotherapy, the treatment also exerts its influence by activating an antitumor immune response made of immune cells such as Natural Killer (NK) cells.
• However, sometimes those natural killers limit the oncolytic viruses, and so despite the exciting development in the OV field in recent years, there is room for improvement to tackle some limitations, including the relatively weak therapeutic activity and lack of means for effective systemic delivery. -
Question 5 of 5
5. Question
2 points5. In the context of cosmology, which of the following statements is/are correct?
1. Only 10% of the matter in the universe is dark matter.
2. Black holes are formed as a result of a split in neutron stars.
3. Dark energy is evenly distributed throughout the universe in space and time.
Select the correct answer using the code given below.Correct
Answer: C
Explanation:
In a former gold mine a mile underground, inside a titanium tank filled with a rare liquified gas, scientists have begun the search for what so far has been unfindable: dark matter. Scientists are pretty sure the invisible stuff makes up most of the universe’s mass and say we wouldn’t be here without it but they don’t know what it is.
The visible universe including Earth, the sun, other stars, and galaxies, is made of protons, neutrons, and electrons bundled together into atoms. They make up only 5% of the universe.
• Galaxies in our universe seem to be achieving an impossible feat. They are rotating with such speed that the gravity generated by their observable matter could not possibly hold them together; they should have torn themselves apart long ago. Scientists theorize that something we have yet to detect directly is giving these galaxies extra mass, generating the extra gravity they need to stay intact.
• This strange and unknown matter was called “dark matter” since it is not visible. Dark matter outweighs visible matter roughly six to one, making up about 27% of the universe.
• Dark energy makes up the remaining 68% of the universe and appears to be associated with the vacuum in space.It is distributed evenly throughout the universe, not only in space but also in time, in other words, its effect is not diluted as the universe expands.
• A neutron star is the collapsed core of a giant star. Neutron stars have a radius on the order of 10 kilometers and a mass of about 1.4 solar masses. Hence it has an enormous density. They result from the supernova explosion of massive stars.
• When the supernova results in a neutron star core, the electrons, and protons in the core are merged to become neutrons, so the newly born 20-km-diameter neutron star containing between 1.4 and 3 solar masses is like a giant atomic nucleus containing only neutrons.
• If the neutron star’s mass is then increased, neutrons become degenerate, breaking up into their constituent quarks, thus the star becomes a quark star; a further increase in mass results in a black hole. Hence black holes result from massive neutron stars. Neutron stars’ split does not result in black holes.Incorrect
Answer: C
Explanation:
In a former gold mine a mile underground, inside a titanium tank filled with a rare liquified gas, scientists have begun the search for what so far has been unfindable: dark matter. Scientists are pretty sure the invisible stuff makes up most of the universe’s mass and say we wouldn’t be here without it but they don’t know what it is.
The visible universe including Earth, the sun, other stars, and galaxies, is made of protons, neutrons, and electrons bundled together into atoms. They make up only 5% of the universe.
• Galaxies in our universe seem to be achieving an impossible feat. They are rotating with such speed that the gravity generated by their observable matter could not possibly hold them together; they should have torn themselves apart long ago. Scientists theorize that something we have yet to detect directly is giving these galaxies extra mass, generating the extra gravity they need to stay intact.
• This strange and unknown matter was called “dark matter” since it is not visible. Dark matter outweighs visible matter roughly six to one, making up about 27% of the universe.
• Dark energy makes up the remaining 68% of the universe and appears to be associated with the vacuum in space.It is distributed evenly throughout the universe, not only in space but also in time, in other words, its effect is not diluted as the universe expands.
• A neutron star is the collapsed core of a giant star. Neutron stars have a radius on the order of 10 kilometers and a mass of about 1.4 solar masses. Hence it has an enormous density. They result from the supernova explosion of massive stars.
• When the supernova results in a neutron star core, the electrons, and protons in the core are merged to become neutrons, so the newly born 20-km-diameter neutron star containing between 1.4 and 3 solar masses is like a giant atomic nucleus containing only neutrons.
• If the neutron star’s mass is then increased, neutrons become degenerate, breaking up into their constituent quarks, thus the star becomes a quark star; a further increase in mass results in a black hole. Hence black holes result from massive neutron stars. Neutron stars’ split does not result in black holes.
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