The document is a 20 question quiz about nanotechnology. It covers topics like who coined the term "nanotechnology", properties of materials at the nanoscale, approaches to preparing nanomaterials, types of nanotubes and nanostructures, applications of nanotechnology in fields like medicine, and basic concepts in nanoscience. The questions test knowledge about characteristics of nanomaterials, nanofabrication techniques, uses of nanotechnology, and fundamentals of areas like semiconductors and carbon nanotubes.

1. NANOTECHNOLOGY
1.Who first used the term Nanotechnology?
a. Richard Feymann b. Norio Taniguichi
c. Eric Drexler d. Sumio Lijima
2.How many oxygen atoms lined up in a row would fit in a one nanometre space?
a. None b. One
c. Seven d. Seventy
3.Which of these statements is NOT true?
a. Gold at the nanoscale is red
b. Copper at the nanoscale is transparent
c. Silicon at the nanoscale is an insulator
d. Aluminium at the nanoscale is highly combustible
4.Which of the following is an example of top-down approach for the preparation of nanomaterials?
a. Gas phase agglomeration b. Molecular self-assembly
c. Mechanical grinding d. Molecular beam epitaxy
5.Which of the following is an example of bottom-up approach for the preparation of nanomaterials?
a. Etching b. Dip pen nano-lithography
c. Lithography d. Erosion
6.What is the generalname for the class of structures made of rolled up carbon lattices?
a. Nanorods b. Nanotubes
c. Nanosheets d. Fullerods
7.what ratio decides the efficiency of nanosubstances?
a. Weight/Volume b. Surface area/Volume
c. Volume/Weight d. Pressure/Volume
8. “There is plenty of room at the bottom”. This was stated by
a. Eric Drexler b. Richard Feymann
c. Harold Croto d. Richard Smalley
9.____________ is the field in which the nanoparticles are used with silica coated iron oxide
a. Magnetic applications b. Electronics
c. Medical diagnosis d. Structural and mechanical materials
10. Coating the nano crystals with the ceramics is carried that leads to__________
a. Corrosion b. Corrosion resistant

2. c. wear and tear d. Soft
11.Which of the ceramic components are easier through nano structuring?
a. Lubrication b. Coating
c. Fabrication d. Wear
12.___________ contains nano particles prepared by using biologically processed metal ores
a. Homeopathic medicines b. Modern antibioitics
c. Ayurvedic “Bhasmas” d. Modern cosmetics
13. The cut-off limit of human eye is ________ nm
a. 2.000 b. 5,000
c. 10,000 d. 50,000
14.Which of the statement is incorrect about semiconductors?
a. A charge carrier may be either a positive hole or an electron
b. Ga -doped Si is a P-type semiconductor
c. n and p semiconductor are intrinsic semiconductors
d. Doping Si with As introduces a donor level below the conduction band
15. How is nanotechnology used in the medical community?
a. Testing and diagnosis b. Tissue engineering
c. Drug delivery d. All the above
16.Nanoscience can be studied with the help of ___________
a. Quantum mechanics b. Newtonian mechanics
c. Macro-dynamics d. Geophysics
17.Carbon atoms make __________type of bond with other carbon atoms
a. Covalent b. Ionic
c. Metallic d. Hydrogen
18.The size of nano particle is between _______ nm
a. 100 to 1000 b. 0.1 to 10
c. 1 to 100 d. 0.01 to 1
19.The compressive strength of a nanotube ________ its tensile strength
a. is less than b. is greater than
c. is equal to d. may be greater than
20.The nanomaterials are used in the light emitted electron luminescent devices.
a. True b. False