Recent Developments in Physics Online Test 12th Science

Which of the following statement is correct?

1. Nanoscience is the study of structure and materials of 10^-19 m scale
2. The mechanical, electrical and optical properties of such size materials vary from their original size.

Which of the following are included in Nanotechnology?

1. Design
2. Production
3. Characterization

Which of the following statement is correct?

1. If a particle of a solid is of size less than 100nm, it is said to be a nano solid
2. ZnS can be in both bulk and Solid form
3. When the particle size is exceeds more than 100nm, it is called as bulk solid

What is the width of single strand DNA?

Which of the following statement is correct?

1. Manipulation of colours can be done by adjusting the size of the nanoparticles in the material
2. 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

Which of the following statement about parrot fish is correct?

1. It feeds on coral
2. It is only green in colour
3. The powerful bite of parrot fish is due to interwoven fibre nanostructure

Which of the following statement is correct?

1. Water repellent nano paints are made based on lotus leaf structures
2. Nano structures in lotus leaf on surface is the reason for its self- cleaning process

When was the 2D material isolated and characterized by Andre Geim and Konstantin Novoselov?

Who developed Scanning tunnelling microscope?

1. Gerd Binning
2. Konstantin Novoselvo
3. Heinrich Rohrer

Who coined the term nanotechnology?

How many xenon atoms were manipulated to spell out IBM logo?

How many ways are there for preparing nanomaterials?

Which of the following is not a method of top-down approach for preparing nanomaterials?

Which of the following are bottom-up approach of producing nanomaterials?

1. Chemical vapour deposition
2. Sol-gel
3. Plasma etching

Which of the following are applications of Nano-technology?

1. Electronics
2. Defence and security
3. Textile
4. Drug delivery

Which of the following statement is correct?

1. The research on the harmful impact of application of nanotechnology is also equally important and fast developing.
2. The major concern here is that the nanoparticles have the dimensions same as that of the biological molecules such as proteins
3. They may easily get absorbed onto the surface of living organisms and they might enter the tissues and fluids of the body.

Which of the following statement is correct?

1. The adsorbing nature depends on the surface of the nanoparticle
2. The interaction with living systems is not affected by the dimensions of the nanoparticles
3. 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

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

Which of the following is not a neurological disease?

Robotics is an integrated study of_____

1. Mechanical engineering
2. Electronics engineering
3. Computer engineering

Which of the following statement is correct?

1. Robot is a mechanical device designed with electronic circuitry and programmed to perform a specific task.
2. 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

When was the 1^st digitally operated programmable robot operated?

Which of the following statement is correct?

1. The robotic system mainly consists of sensors, power supplies, control systems, manipulators and necessary software
2. Sensor is the brain of the computer
3. The Controller gives commands for the moving parts to perform the job

Which of the following human activities can be replicated by robots?

1. Walking
2. Lifting
3. Sensing

Which of the following motors can be used in Robots?

1. Brushless motor
2. Geared DC motor
3. AC motor

How much % does pneumatic air muscles contract when air is sucked inside them?

Which of the following works can be brought down by AI?

1. Face recognition
2. Translate words from one language to another
3. Taking decisions based on previous actions

Which of the following are the applications of Robots?

1. Exploring stars
2. Investigation of minerology of rocks and soils on mars
3. Analysis of elements found in rock and soils

Which of the following statement is correct?

1. The size of the nano robots is reduced to microscopic level to perform a task in very small spaces.
2. Chinese scientists have created the world’s 1st autonomous DNA robots to combat cancer tumours.
3. 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.

Which of the following are the advantages of robotics?

1. The robots are much cheaper than humans
2. In warfare, robots can save human lives
3. Robots can work in extreme environmental conditions
4. Robots are more precise and error free in performing the task

Which of the following metals are most commonly used in robots?

1. Aluminium
2. Silver
3. Steel

Which of the following statement is correct?

1. Robots have no sense of emotions or conscience
2. They have empathy and hence create an emotionless workplace
3. Humans cannot be replaced by robots in decision making

Which of the following statement is incorrect?

1. Medical science very much revolves around physics principles.
2. Medical instrumentation has widened the life span due to the technology integrated diagnosis and treatment of most of the diseases

Match the following

• X-rays                       —-       MRI
• Theory of Radioactivity  —-      Radiology X-ray imaging
• Artificial Radioactivity        —-  Nuclear Medicine
• Nuclear Magnetic Resonance  —-   Scintigraphy

Match the following

1. LASER                      — Drug  delivery
2. DSCT                         — Surgical instrument
3. Nuclear medicine     — CT
4. Nanotechnology         — Fusion imaging techniques

Which of the following statement is correct?

1. Medical virtual reality is effectively used to stop the brain from processing pain and cure soreness in the hospitalized patients
2. It helps in the treatment of Autism, Memory loss, and Mental illness

Which of the following customised using precision medicine?

1. Healthcare
2. Practises
3. Medical decisions

Which of the following statement is incorrect?

1. A health wearable is a device used for tracking a wearer’s vital signs or health and fitness related data, location, etc.
2. Medical wearables with artificial intelligence and big data provide an added value to healthcare with a focus on diagnosis, treatment, patient monitoring and prevention.

Which of the following statement is correct?

1. An artificial organ is an engineered device or tissue that is implanted or integrated into a human.
2. It duplicates or augments a specific function or functions of human organs so that the patient may return to a normal life

In which of the following medicinal filed 3D printing is used?

1. Audiology
2. Dentistry
3. Orthopaedics

Which of the following can be monitored using wireless brain sensor?

1. Intercranial pressure
2. Temperature
3. Nerve signal

Which of the following statement about smart inhalers is correct?

1. Inhalers are the main treatment option for asthma
2. Smart inhalers are designed with health systems and patients in mind so that they can oer maximum benefit
3. Smart inhalers use blue-tooth technology to detect inhaler use, remind patients when to take their medication

Which of the following statement is correct?

1. Particle physics deals with the theory of fundamental particles of nature and it is one of the active research areas in physics.
2. In 1930s, it was established that atoms are made up of electrons and protons

Which of the following are made up of quarks?

1. Electron
2. Proton
3. Neutron

When was God Particle discovered?

When was the existence of gravitational waves discovered?

Which of the following statement about gravitational waves is correct?

1. Gravitational waves are the disturbances in the curvature of space-time and it travels with speed of light
2. Any accelerated mass emits gravitational waves
3. These waves are very strong even for masses like earth

The strongest source of gravitational waves are_____

Who theoretically proposed the existence of gravitational waves?

Which of the following statement about blackholes is correct?

1. Black holes are end stage of stars which are highly dense massive object.
2. Every galaxy has black hole at its centre
3. Sagittarius A* is the black hole at the centre of the Milky Way galaxy.

Which of the following statement about blackholes is correct?

1. Its mass ranges from 20 times mass of the sun to 1 million times mass of the sun
2. It has very strong gravitational force such that no particle or even light can escape from it.

How telescopes were stationed to photograph the Black hole M87?