Nano and Quantum Physics

Milling, Lithographic method and machining are examples of

• bottom-up approach

• sputtering technique

• plasma assisted technique

• top-down approach

Which ratio decides the efficiency of nanomaterials?

• Weight/volume

• Surface area/volume

• Volume/weight

• Pressure/volume

Which one of these statements is NOT true?

• Gold at the nanoscale is red

• Silicon at the nanoscale is an insulator

• Aluminum at the nanoscale is highly combustible

• Copper at the nanoscale is transparent

Richard Feynman is often credited with predicting the potential of nanotechnology. What was the title of his famous speech given on December 29, 1959?

• There is a tiny room at the bottom

• Things get nanoscopic at the bottom

• Size of the material matters

• There is plenty of room at the bottom

10 nm is equal to

• 10^-8m

• 10^-7m

• 10^-9m

• 10^-10m

The prefix "nano" comes from a

• French word meaning billion

• Spanish word meaning particle

• Latin word meaning invisible

• Greek word meaning dwarf

Nanoscience can be studied with the help of

• quantum mechanics

• Newtonian mechanics

• macro-dynamics

• geophysics

Greeks and Romans had used nanoparticles in the manufacture of

• cosmetics for eyes

• medicines

• metal articles

• hair-dye

Nanosized particles are chemically very active because

• of their smaller size

• due to the lower number of atoms

• the number of surface molecules or atoms is more

• number of surface molecules is less

Top down technology refers to nanomaterials as

• making structures by machining and etching technique

• by sputtering technique

• using thin films

• using molecular technique