Recent Developments in Physics Online Test 12th Science
Recent Developments in Physics Online Test 12th Science
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Question 1 of 52
1. Question
Which of the following statement is correct?
- Nanoscience is the study of structure and materials of 10-19 m scale
- The mechanical, electrical and optical properties of such size materials vary from their original size.
Correct
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Question 2 of 52
2. Question
Which of the following are included in Nanotechnology?
- Design
- Production
- Characterization
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Incorrect
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Question 3 of 52
3. Question
Which of the following statement is correct?
- If a particle of a solid is of size less than 100nm, it is said to be a nano solid
- ZnS can be in both bulk and Solid form
- When the particle size is exceeds more than 100nm, it is called as bulk solid
Correct
Incorrect
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Question 4 of 52
4. Question
What is the width of single strand DNA?
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Question 5 of 52
5. Question
Which of the following statement is correct?
- Manipulation of colours can be done by adjusting the size of the nanoparticles in the material
- The scales on the wings of the morpho butterfly contains nanostructures that can change the way light waves interact with each other and gives intelligent metallic blue and green hues
Correct
Incorrect
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Question 6 of 52
6. Question
Which of the following statement about parrot fish is correct?
- It feeds on coral
- It is only green in colour
- The powerful bite of parrot fish is due to interwoven fibre nanostructure
Correct
Incorrect
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Question 7 of 52
7. Question
Which of the following statement is correct?
- Water repellent nano paints are made based on lotus leaf structures
- Nano structures in lotus leaf on surface is the reason for its self- cleaning process
Correct
Incorrect
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Question 8 of 52
8. Question
When was the 2D material isolated and characterized by Andre Geim and Konstantin Novoselov?
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Incorrect
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Question 9 of 52
9. Question
Who developed Scanning tunnelling microscope?
- Gerd Binning
- Konstantin Novoselvo
- Heinrich Rohrer
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Incorrect
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Question 10 of 52
10. Question
Who coined the term nanotechnology?
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Question 11 of 52
11. Question
How many xenon atoms were manipulated to spell out IBM logo?
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Question 12 of 52
12. Question
How many ways are there for preparing nanomaterials?
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Question 13 of 52
13. Question
Which of the following is not a method of top-down approach for preparing nanomaterials?
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Question 14 of 52
14. Question
Which of the following are bottom-up approach of producing nanomaterials?
- Chemical vapour deposition
- Sol-gel
- Plasma etching
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Incorrect
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Question 15 of 52
15. Question
Which of the following are applications of Nano-technology?
- Electronics
- Defence and security
- Textile
- Drug delivery
Correct
Incorrect
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Question 16 of 52
16. Question
Which of the following statement is correct?
- The research on the harmful impact of application of nanotechnology is also equally important and fast developing.
- The major concern here is that the nanoparticles have the dimensions same as that of the biological molecules such as proteins
- They may easily get absorbed onto the surface of living organisms and they might enter the tissues and fluids of the body.
Correct
The research on the harmful impact of application of nanotechnology is also equally important and fast developing. The major concern here is that the nanoparticles have the dimensions same as that of the biological molecules such as proteins. They may easily get absorbed onto the surface of living organisms and they might enter the tissues and fluids of the body.
Incorrect
The research on the harmful impact of application of nanotechnology is also equally important and fast developing. The major concern here is that the nanoparticles have the dimensions same as that of the biological molecules such as proteins. They may easily get absorbed onto the surface of living organisms and they might enter the tissues and fluids of the body.
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Question 17 of 52
17. Question
Which of the following statement is correct?
- The adsorbing nature depends on the surface of the nanoparticle
- The interaction with living systems is not affected by the dimensions of the nanoparticles
- It is possible to deliver a drug directly to a specific cell in the body by designing the surface of a nanoparticle so that it adsorbs specifically onto the surface of the target cell
Correct
The adsorbing nature depends on the surface of the nanoparticle. Indeed, it is possible to deliver a drug directly to a specific cell in the body by designing the surface of a nanoparticle so that it adsorbs specifically onto the surface of the target cell. The interaction with living systems is also affected by the dimensions of the nanoparticles. For instance, nanoparticles of a few nano-meters size may reach well inside biomolecules, which is not possible for larger nanoparticles.
Incorrect
The adsorbing nature depends on the surface of the nanoparticle. Indeed, it is possible to deliver a drug directly to a specific cell in the body by designing the surface of a nanoparticle so that it adsorbs specifically onto the surface of the target cell. The interaction with living systems is also affected by the dimensions of the nanoparticles. For instance, nanoparticles of a few nano-meters size may reach well inside biomolecules, which is not possible for larger nanoparticles.
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Question 18 of 52
18. Question
Assertion(A): It is also possible for the inhaled nanoparticles to reach the blood, to reach other sites such as the liver, heart or blood cells
Reason(R): Nanoparticles can also cross cell membranes
Correct
Nanoparticles can also cross cell membranes. It is also possible for the inhaled nanoparticles to reach the blood, to reach other sites such as the liver, heart or blood cells. Researchers are trying to understand the response of living organisms to the presence of nanoparticles of varying size, shape, chemical composition and surface characteristics.
Incorrect
Nanoparticles can also cross cell membranes. It is also possible for the inhaled nanoparticles to reach the blood, to reach other sites such as the liver, heart or blood cells. Researchers are trying to understand the response of living organisms to the presence of nanoparticles of varying size, shape, chemical composition and surface characteristics.
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Question 19 of 52
19. Question
Which of the following is not a neurological disease?
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Question 20 of 52
20. Question
Robotics is an integrated study of_____
- Mechanical engineering
- Electronics engineering
- Computer engineering
Correct
Robotics is an integrated study of mechanical engineering, electronic engineering, computer engineering, and science.
Incorrect
Robotics is an integrated study of mechanical engineering, electronic engineering, computer engineering, and science.
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Question 21 of 52
21. Question
Which of the following statement is correct?
- Robot is a mechanical device designed with electronic circuitry and programmed to perform a specific task.
- They can take up the role of humans in certain dangerous environments that are hazardous to people like defusing bombs, finding survivors in unstable ruins
Correct
Robot is a mechanical device designed with electronic circuitry and programmed to perform a specific task. These automated machines are highly significant in this robotic era. They can take up the role of humans in certain dangerous environments that are hazardous to people like defusing bombs, finding survivors in unstable ruins, and exploring mines and shipwrecks.
Incorrect
Robot is a mechanical device designed with electronic circuitry and programmed to perform a specific task. These automated machines are highly significant in this robotic era. They can take up the role of humans in certain dangerous environments that are hazardous to people like defusing bombs, finding survivors in unstable ruins, and exploring mines and shipwrecks.
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Question 22 of 52
22. Question
When was the 1st digitally operated programmable robot operated?
Correct
In 1954, George Devol invented the 1st digitally operated programmable robot called Unimate. George Devol and Joseph Engelberger, the father of the modern robotics industry formed the world’s 1st robot company in 1956. In 1961, Unimate, was operated in a General Motors automobile factory for moving car parts around in New Jersey.
Incorrect
In 1954, George Devol invented the 1st digitally operated programmable robot called Unimate. George Devol and Joseph Engelberger, the father of the modern robotics industry formed the world’s 1st robot company in 1956. In 1961, Unimate, was operated in a General Motors automobile factory for moving car parts around in New Jersey.
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Question 23 of 52
23. Question
Which of the following statement is correct?
- The robotic system mainly consists of sensors, power supplies, control systems, manipulators and necessary software
- Sensor is the brain of the computer
- The Controller gives commands for the moving parts to perform the job
Correct
The robotic system mainly consists of sensors, power supplies, control systems, manipulators and necessary software. Most robots are composed of 3 main parts:
- The Controller ‐ also known as the “brain” which is run by a computer program. It gives commands for the moving parts to perform the job.
- Mechanical parts – motors, pistons, grippers, wheels, and gears that make the robot move, grab, turn, and lift.
- Sensors – to tell the robot about its surroundings. It helps to determine the sizes and shapes of the objects around, distance between the objects, and directions as well
Incorrect
The robotic system mainly consists of sensors, power supplies, control systems, manipulators and necessary software. Most robots are composed of 3 main parts:
- The Controller ‐ also known as the “brain” which is run by a computer program. It gives commands for the moving parts to perform the job.
- Mechanical parts – motors, pistons, grippers, wheels, and gears that make the robot move, grab, turn, and lift.
- Sensors – to tell the robot about its surroundings. It helps to determine the sizes and shapes of the objects around, distance between the objects, and directions as well
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Question 24 of 52
24. Question
Which of the following human activities can be replicated by robots?
- Walking
- Lifting
- Sensing
Correct
Certain robots are made to resemble humans in appearance and replicate the human activities like walking, lifting, and sensing, etc.
Incorrect
Certain robots are made to resemble humans in appearance and replicate the human activities like walking, lifting, and sensing, etc.
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Question 25 of 52
25. Question
Which of the following motors can be used in Robots?
- Brushless motor
- Geared DC motor
- AC motor
Correct
Electric motors are used to actuate the parts of the robots like wheels, arms, fingers, legs, sensors, camera, weapon systems etc. Different types of electric motors are used. The most often used ones are AC motor, Brushed DC motor, Brushless DC motor, Geared DC motor, etc.
Incorrect
Electric motors are used to actuate the parts of the robots like wheels, arms, fingers, legs, sensors, camera, weapon systems etc. Different types of electric motors are used. The most often used ones are AC motor, Brushed DC motor, Brushless DC motor, Geared DC motor, etc.
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Question 26 of 52
26. Question
How much % does pneumatic air muscles contract when air is sucked inside them?
Correct
Pneumatic Air Muscles are devices that can contract and expand when air is pumped inside. It can replicate the function of a human muscle. They contract almost 40% when the air is sucked inside them.
Incorrect
Pneumatic Air Muscles are devices that can contract and expand when air is pumped inside. It can replicate the function of a human muscle. They contract almost 40% when the air is sucked inside them.
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Question 27 of 52
27. Question
Which of the following works can be brought down by AI?
- Face recognition
- Translate words from one language to another
- Taking decisions based on previous actions
Correct
The aim of artificial intelligence is to bring in human like behaviour in robots. It works on
- Face recognition
- Providing response to player’s actions in computer games
- Taking decisions based on previous actions
- To regulate the traffic by analysing the density of traffic on roads.
- Translate words from one language to another
Incorrect
The aim of artificial intelligence is to bring in human like behaviour in robots. It works on
- Face recognition
- Providing response to player’s actions in computer games
- Taking decisions based on previous actions
- To regulate the traffic by analysing the density of traffic on roads.
- Translate words from one language to another
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Question 28 of 52
28. Question
Which of the following are the applications of Robots?
- Exploring stars
- Investigation of minerology of rocks and soils on mars
- Analysis of elements found in rock and soils
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Question 29 of 52
29. Question
Which of the following statement is correct?
- The size of the nano robots is reduced to microscopic level to perform a task in very small spaces.
- Chinese scientists have created the world’s 1st autonomous DNA robots to combat cancer tumours.
- Nano-robots in blood stream to perform small surgical procedures, to fight against bacteria, repairing individual cell in the body is the future prospect in medicinal field.
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Question 30 of 52
30. Question
Which of the following are the advantages of robotics?
- The robots are much cheaper than humans
- In warfare, robots can save human lives
- Robots can work in extreme environmental conditions
- Robots are more precise and error free in performing the task
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Question 31 of 52
31. Question
Which of the following metals are most commonly used in robots?
- Aluminium
- Silver
- Steel
Correct
For robots, aluminium and steel are the most common metals. Aluminium is a so er metal and is therefore easier to work with, but steel is several times stronger. In any case, because of the inherent strength of metal, robot bodies are made using sheet, bar, rod, channel, and other shapes.
Incorrect
For robots, aluminium and steel are the most common metals. Aluminium is a so er metal and is therefore easier to work with, but steel is several times stronger. In any case, because of the inherent strength of metal, robot bodies are made using sheet, bar, rod, channel, and other shapes.
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Question 32 of 52
32. Question
Which of the following statement is correct?
- Robots have no sense of emotions or conscience
- They have empathy and hence create an emotionless workplace
- Humans cannot be replaced by robots in decision making
Correct
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Question 33 of 52
33. Question
Which of the following statement is incorrect?
- Medical science very much revolves around physics principles.
- Medical instrumentation has widened the life span due to the technology integrated diagnosis and treatment of most of the diseases
Correct
Medical science very much revolves around physics principles. Medical instrumentation has widened the life span due to the technology integrated diagnosis and treatment of most of the diseases. This modernisation in all elds is possible due to efficient application of fundamental physics.
Incorrect
Medical science very much revolves around physics principles. Medical instrumentation has widened the life span due to the technology integrated diagnosis and treatment of most of the diseases. This modernisation in all elds is possible due to efficient application of fundamental physics.
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Question 34 of 52
34. Question
Match the following
- X-rays —- MRI
- Theory of Radioactivity —- Radiology X-ray imaging
- Artificial Radioactivity —- Nuclear Medicine
- Nuclear Magnetic Resonance —- Scintigraphy
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Incorrect
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Question 35 of 52
35. Question
Match the following
- LASER — Drug delivery
- DSCT — Surgical instrument
- Nuclear medicine — CT
- Nanotechnology — Fusion imaging techniques
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Incorrect
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Question 36 of 52
36. Question
Which of the following statement is correct?
- Medical virtual reality is effectively used to stop the brain from processing pain and cure soreness in the hospitalized patients
- It helps in the treatment of Autism, Memory loss, and Mental illness
Correct
Medical virtual reality is effectively used to stop the brain from processing pain and cure soreness in the hospitalized patients. Virtual reality has enhanced surgeries by the use of 3D models by surgeons to plan operations. It helps in the treatment of Autism, Memory loss, and Mental illness.
Incorrect
Medical virtual reality is effectively used to stop the brain from processing pain and cure soreness in the hospitalized patients. Virtual reality has enhanced surgeries by the use of 3D models by surgeons to plan operations. It helps in the treatment of Autism, Memory loss, and Mental illness.
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Question 37 of 52
37. Question
Which of the following customised using precision medicine?
- Healthcare
- Practises
- Medical decisions
Correct
Precision medicine is an emerging approach for disease treatment and prevention that takes into account individual variability in genes, environment, and lifestyle for each person. In this medical model it is possible to customise healthcare, with medical decisions, treatments, practices, or products which are tailored to the individual patient.
Incorrect
Precision medicine is an emerging approach for disease treatment and prevention that takes into account individual variability in genes, environment, and lifestyle for each person. In this medical model it is possible to customise healthcare, with medical decisions, treatments, practices, or products which are tailored to the individual patient.
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Question 38 of 52
38. Question
Which of the following statement is incorrect?
- A health wearable is a device used for tracking a wearer’s vital signs or health and fitness related data, location, etc.
- Medical wearables with artificial intelligence and big data provide an added value to healthcare with a focus on diagnosis, treatment, patient monitoring and prevention.
Correct
A health wearable is a device used for tracking a wearer’s vital signs or health and fitness related data, location, etc. Medical wearables with artificial intelligence and big data provide an added value to healthcare with a focus on diagnosis, treatment, patient monitoring and prevention.
Incorrect
A health wearable is a device used for tracking a wearer’s vital signs or health and fitness related data, location, etc. Medical wearables with artificial intelligence and big data provide an added value to healthcare with a focus on diagnosis, treatment, patient monitoring and prevention.
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Question 39 of 52
39. Question
Which of the following statement is correct?
- An artificial organ is an engineered device or tissue that is implanted or integrated into a human.
- It duplicates or augments a specific function or functions of human organs so that the patient may return to a normal life
Correct
An artificial organ is an engineered device or tissue that is implanted or integrated into a human. It is possible to interface it with living tissue or to replace a natural organ. It duplicates or augments a specific function or functions of human organs so that the patient may return to a normal life as soon as possible.
Incorrect
An artificial organ is an engineered device or tissue that is implanted or integrated into a human. It is possible to interface it with living tissue or to replace a natural organ. It duplicates or augments a specific function or functions of human organs so that the patient may return to a normal life as soon as possible.
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Question 40 of 52
40. Question
In which of the following medicinal filed 3D printing is used?
- Audiology
- Dentistry
- Orthopaedics
Correct
Advanced 3D printer systems and materials assist physicians in a range of operations in the medical eld from audiology, dentistry, orthopaedics and other applications.
Incorrect
Advanced 3D printer systems and materials assist physicians in a range of operations in the medical eld from audiology, dentistry, orthopaedics and other applications.
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Question 41 of 52
41. Question
Which of the following can be monitored using wireless brain sensor?
- Intercranial pressure
- Temperature
- Nerve signal
Correct
Wireless brain sensors monitor intracranial pressure and temperature and then are absorbed by the body. Hence there is no need for surgery to remove these devices.
Incorrect
Wireless brain sensors monitor intracranial pressure and temperature and then are absorbed by the body. Hence there is no need for surgery to remove these devices.
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Question 42 of 52
42. Question
Which of the following statement about smart inhalers is correct?
- Inhalers are the main treatment option for asthma
- Smart inhalers are designed with health systems and patients in mind so that they can oer maximum benefit
- Smart inhalers use blue-tooth technology to detect inhaler use, remind patients when to take their medication
Correct
Inhalers are the main treatment option for asthma. Smart inhalers are designed with health systems and patients in mind so that they can offer maximum benefit. Smart inhalers use blue-tooth technology to detect inhaler use, remind patients when to take their medication and gather data to help guide care.
Incorrect
Inhalers are the main treatment option for asthma. Smart inhalers are designed with health systems and patients in mind so that they can offer maximum benefit. Smart inhalers use blue-tooth technology to detect inhaler use, remind patients when to take their medication and gather data to help guide care.
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Question 43 of 52
43. Question
Which of the following statement is correct?
- Particle physics deals with the theory of fundamental particles of nature and it is one of the active research areas in physics.
- In 1930s, it was established that atoms are made up of electrons and protons
Correct
Particle physics deals with the theory of fundamental particles of nature and it is one of the active research areas in physics. Initially it was thought that atom is the fundamental entity of matter. In 1930s, it was established that atoms are made up of electrons, protons and neutrons.
Incorrect
Particle physics deals with the theory of fundamental particles of nature and it is one of the active research areas in physics. Initially it was thought that atom is the fundamental entity of matter. In 1930s, it was established that atoms are made up of electrons, protons and neutrons.
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Question 44 of 52
44. Question
Which of the following are made up of quarks?
- Electron
- Proton
- Neutron
Correct
In the 1960s, quarks were discovered and it was understood that proton and neutron are made up of quarks. In the meantime, the particle physics research gained momentum and has grown exponentially both in theoretical and experimental perspective. Later it was found that the quarks interact through gluons. It is the field which received more numbers of noble prizes.
Incorrect
In the 1960s, quarks were discovered and it was understood that proton and neutron are made up of quarks. In the meantime, the particle physics research gained momentum and has grown exponentially both in theoretical and experimental perspective. Later it was found that the quarks interact through gluons. It is the field which received more numbers of noble prizes.
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Question 45 of 52
45. Question
When was God Particle discovered?
Correct
Recently in the year 2013, famous ‘Higgs particles’ also known as “God” particles were discovered and for this, Peter Higgs and Englert received noble prize in physics. It is the ‘Higgs particle’ which gives mass to many particles like protons, neutrons etc.
Incorrect
Recently in the year 2013, famous ‘Higgs particles’ also known as “God” particles were discovered and for this, Peter Higgs and Englert received noble prize in physics. It is the ‘Higgs particle’ which gives mass to many particles like protons, neutrons etc.
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Question 46 of 52
46. Question
When was the existence of gravitational waves discovered?
Correct
Cosmology is the branch that involves the origin and evolution of the universe. It deals with formation of stars, galaxy etc. In the year 2015, the existence of “gravitational waves” was discovered and noble prize was awarded for this discovery in the year 2017.
Incorrect
Cosmology is the branch that involves the origin and evolution of the universe. It deals with formation of stars, galaxy etc. In the year 2015, the existence of “gravitational waves” was discovered and noble prize was awarded for this discovery in the year 2017.
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Question 47 of 52
47. Question
Which of the following statement about gravitational waves is correct?
- Gravitational waves are the disturbances in the curvature of space-time and it travels with speed of light
- Any accelerated mass emits gravitational waves
- These waves are very strong even for masses like earth
Correct
Gravitational waves are the disturbances in the curvature of space-time and it travels with speed of light. Any accelerated charge emits electromagnetic wave. Similarly, any accelerated mass emits gravitational waves but these waves are very weak even for masses like earth.
Incorrect
Gravitational waves are the disturbances in the curvature of space-time and it travels with speed of light. Any accelerated charge emits electromagnetic wave. Similarly, any accelerated mass emits gravitational waves but these waves are very weak even for masses like earth.
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Question 48 of 52
48. Question
The strongest source of gravitational waves are_____
Correct
The strongest source of gravitational waves are black holes. The discovery of gravitational waves made it possible to study the structure of black holes since it is the strongest source of gravitational waves
Incorrect
The strongest source of gravitational waves are black holes. The discovery of gravitational waves made it possible to study the structure of black holes since it is the strongest source of gravitational waves
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Question 49 of 52
49. Question
Who theoretically proposed the existence of gravitational waves?
Correct
In fact, the recent discoveries of gravitational waves are emitted by two black holes when they merge to a single black hole. In fact, Albert Einstein theoretically proposed the existence of ‘gravitational waves’ in the year 1915. A-er 100 years, it is experimentally proved that his predictions are correct.
Incorrect
In fact, the recent discoveries of gravitational waves are emitted by two black holes when they merge to a single black hole. In fact, Albert Einstein theoretically proposed the existence of ‘gravitational waves’ in the year 1915. A-er 100 years, it is experimentally proved that his predictions are correct.
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Question 50 of 52
50. Question
Which of the following statement about blackholes is correct?
- Black holes are end stage of stars which are highly dense massive object.
- Every galaxy has black hole at its centre
- Sagittarius A* is the black hole at the centre of the Milky Way galaxy.
Correct
Black holes are end stage of stars which are highly dense massive object. Every galaxy has black hole at its centre. Sagittarius A* is the black hole at the centre of the Milky Way galaxy.
Incorrect
Black holes are end stage of stars which are highly dense massive object. Every galaxy has black hole at its centre. Sagittarius A* is the black hole at the centre of the Milky Way galaxy.
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Question 51 of 52
51. Question
Which of the following statement about blackholes is correct?
- Its mass ranges from 20 times mass of the sun to 1 million times mass of the sun
- It has very strong gravitational force such that no particle or even light can escape from it.
Correct
Black holes mass ranges from 20 times mass of the sun to 1 million times mass of the sun. It has very strong gravitational force such that no particle or even light can escape from it. e existence of black holes is studied when the stars orbiting the black hole behave differently from the other stars.
Incorrect
Black holes mass ranges from 20 times mass of the sun to 1 million times mass of the sun. It has very strong gravitational force such that no particle or even light can escape from it. e existence of black holes is studied when the stars orbiting the black hole behave differently from the other stars.
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Question 52 of 52
52. Question
How telescopes were stationed to photograph the Black hole M87?
Correct
Incorrect
Leaderboard: Recent Developments in Physics Online Test 12th Science
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