Nanoscience is the science of object with typical sizes of ___________

(a)

1 - 100 μ

(b)

1 - 100 nm

(c)

1 - 100 cm

(d)

1- 100 m

If the particle of a solid is of size less than 100 nm, it is said to be a ____________

(a)

Nano particle

(b)

Nano bytes

(c)

Nano solid

(d)

Nano technology

__________ Scanning Electron Micrograph (SEM) showing the nano structures on the surface of a leaf from a lotus plant

(a)

Parrot fish

(b)

Morpho butterfly

(c)

Lotus leaf surface

(d)

Peacock feathers

_______ is synthesized top down approach

(a)

Ball milling

(b)

Plasma etching

(c)

lithography

(d)

Ball milling and lithography

Best example for applications of nanotechnology is ______________.

(a)

Chemical industry

(b)

Engineering

(c)

medicine

(d)

all of these

George Devel invented the first digitally operated programmable robot called ____________.

(a)

Unimate

(b)

Robotics

(c)

Motors

(d)

Generators

Muscle wires can contract by _________ when electric current is passed through them.

(a)

5%

(b)

7%

(c)

25%

(d)

50%

The size of the Nano robots is reduced to ________ level to perform a task in very small space.

(a)

Macroscopic

(b)

Robots DNA

(c)

Microscopic

(d)

Bacteria

Chinese scientists have created the world's first autonomous _________ to combat caner tumours.

(a)

RNA Robot

(b)

DNA Robot

(c)

m RNA Robot

(d)

r RNA Robot

In __________ it was established that atoms are made up of electrons, protons and neutrons

(a)

1945

(b)

1923

(c)

1930

(d)

1927

Zno is an example of __________

(a)

Bulk solid

(b)

Nano solid

(c)

Bulk solid and Nano solid

(d)

None of the above

A single strand of DNA, the building block of all living things, is about _________ nanometers wide.

(a)

Two

(b)

Three

(c)

Four

(d)

Five

Bulk particles of nanoparticles are synthesized by ___________

(a)

Top - down approach

(b)

Bottom - up approach

(c)

Top - top approach

(d)

Bottom - real approach

Plasma etching and chemical vapour deposition are synthesized by ____________

(a)

Bottom - up approach

(b)

Top - down approach

(c)

Bottom - down approach

(d)

Top - up approach

Which of the property does not change when a matter is divided into nano Particle?

(a)

Electrical

(b)

Chemical

(c)

Magnetic

(d)

Optical