PPSC Chemistry Part VII NanoChemistry Online Test With Answers

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PPSC Chemistry Part VII NanoChemistry Online Test

Sr. # Questions Answers Choice
1 Who prepared and explained nano tubes for the first time. Sumio Tijima Richard Smaley Erick Drexler Richard Feynamann
2 The width of a carbon nano tube is.________ nm 1 1.3 2.5 10
3 The capacity of normal human eye to see the smallest object is _______ micro meter 10000 1000 100 10
4 The thermal conductivity of an SWNT along length is _____ watt/(m.k) 35 330 386 3500
5 In radial direction the thermal conductivity of a nano tube is ______ watt/(m.k) 3500 385 0 350
6 The electrical conductivity of a nano tube is __________ times that of copper. 10 100 1000 1/100
7 In compressive strength of a nanotube ______ its tensile strength. I less than Is greater than Is equal to Less than or equal to.
8 The smallest cluster of carbon atoms in Bucky balls known till today consists of ___________ carbon atoms. 75 20 60 15
9 Which ratio decides the efficiency nano substance. Weight /volume Surface area/volume Volume/weight Pressure/volume
10 What does 'F' stand for in AFM. Fine Front Force Flux
11 The full form of STM is Scanning Tunneling Microscope Scientific Technical Microscope Systematic Technical Microscope SuperTensile Microscope
12 The width of a typical DNA molecule is _______nm 1 2 5 10
13 Which of the following does not apply to nanotechnology. It is a general purpose technology It can be called Green technology Newtonian mechanics can describe it. It involves rearrangement of atoms
14 Who was the first scientist to describe that substance having Nano dimensions possess altogether different and unique properties. Richard Feynamann Erick Drexler Archimedes Michael Faraday
15 Egyptians were using ________ to prepare make up for eyes. Nanoaluminium Nanocopper Nanosteel Nanolead
16 Greeks and Romans had used nanoparticles in the manufacture of. Cosmetics for eyes Medicines <div>Metals</div> Hair -dye
17 Nanoscience can be studied with the help of Quantum mechanics Newtonain mechanics Macro dynamics Grophysics
18 Who coined the word nanotechnology. Eric Drexler Richard Feynamann Sumio tijma Richard smalley
19 Which of the microscope techniques is similar to the Atomic Force Microscopy (AFM) Scanning Electron Microscopy Scanning Tunneling Microscopy Transmission Electron Microscopy None of the above
20 Fullerene or bucky ball is made up of ________ carbon atoms. 100 20 75 60
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