BT405 Final Term MCQs and Subjective by Amaan Khan

BT 405 Final Terms M.C.Q

1. Which is the most important element for all living organisms in Earth? Carbon
2. Carbon‐based nanomaterials demonstrate unprecedented physical and chemical properties such as: high strength,

resistance to corrosion and thermal conduction

3. In graphite the carbon atom uses how many carbon atoms? Three
4. The allotrope of carbon atom named as buckyball was discovered in __________________ 1985
5. The number of carbon atoms in buckyball is _________ 60
6. The diameter of Carbon nanotubes is ranges________________ 1-3 nm
7. Which one of the following are the properties of Carbon nanotubes? Tensile Strength, Thermal Conductivity
8. Some nanotubes have a property called_________, an expression of longitudinal twisting. Chirality
9. Multiple nanotubes can be assembled into microscopic mechanical systems called__________ Nanomachines
10. If the nanotube structure is armchair then the electrical properties are____________ metallic
11. The temperature stability of carbon nanotubes is estimated to be up to 2800⁰C in vacuum and about 750⁰C in air.
12. CNTs have not only unique atomic arrangements but also have unique properties that include large current carrying

capability____________ high thermal conductivity, mechanical strength

13. ESD is the full name of ______________ Electrostatic discharge
14. CNTs in ________increases its tensile strength and halt crack propagation. Concrete
15. In Buckypaper thin nanotube sheets are ______ times stronger and ______times lighter than steel. 250, 10
16. Nanocomposites typically consist of __________ components. Inorganic and Organic
17. The field of ceramics that focuses on improving their mechanical properties is referred to as structural ceramics.
18. One of the most common reasons for adding fillers to polymers is to improve their mechanical performance.
19. ____________ are a type of nanocomposite. Nanocoatings
20. A nanocoating refers to very fine, thin layers of polymeric chemical substances used to impart specific corrosion resistance, chemical and physical properties to a substrate surface.
21. ALD stands for ___________________ Atomic layer deposition
22. _________ is the science and technology of interacting surfaces in relative motion. Tribology
23. ____________ is often used as an alternative to nanocoatings. Thin films
24. Visible light is the part of the electromagnetic spectrum with wavelengths between________ 400 and 700 nm.
25. The resolving power of an optical microscope is around about______________ 0.2 μm or 200 nm
26. How many types of electron microscope? Two
27. STM is a Scanning Probe Microscopy (SPM) technique provides images of surfaces by scanning the surface line by line with a_______________ probe
28. AFM is full form of_____________________ Atomic force Microscopy
29. Atomic force Microscopy measures the________ force between the probe and the surface. Attractive or repulsive
30. ________ is defined as the branch of science that is concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic (EM) radiation. Spectroscopy
31. X‐rays were discovered in 1895 by German physicist________________ Roentgen.
32. A _________is a device capable of recognizing a specific chemical species and signaling. Sensor
33. The __________is a biomolecule that recognizes the target analyte. Bioreceptor
34. Proteins including enzymes and antibodies. Antibody based biosensors are also called__________ Immunosensors
35. ___________ is capable of recognizing a specific target molecule. Enzyme
36. ___________ should be capable of converting the biorecognition event into a measurable. Transducer
37. How many types of transducers are used to measure the Glucose concentration? Three
38. Nanoscale biosensors have the ______to greatly aid in the diagnosis of diseases and monitoring of therapies.

Potential

39. Which one are the basic characteristics of biosensor? LINEARITY, SENSITIVITY and SELECTIVITY
40. _____________ is perhaps the most important feature of a biosensor. Selectivity
41. The best example of ________is depicted by the interaction of an antigen with the antibody. Selectivity
42. __________ act as bioreceptors and are immobilised on the surface of the transducer. Antibodies
43. _________ is the ability of the biosensor to generate identical responses for a duplicated experimental set‐up.

Reproducibility

44. Linearity is the attribute that shows the __________of the measured response. Accuracy
45. The _____________ of the biosensor is defined as the smallest change in the concentration of an analyte that is required to bring a change in the response of the biosensor. Resolution
46. A__________ sensor converts light rays into an electronic signal. Optical
47. Photoconductive devices used to measure the resistance by converting a change of incident light into a change of resistance.
48. The photovoltaic cell (solar cell) converts an amount of incident light into an output voltage.
49. The Photodiodes convert an amount of incident light into an output current.
50. _______which involves measuring the current generated by electrochemical oxidation or reduction. Amperometric
51. ______Used to detect the binding of biological molecules onto arrays of probe biomolecules covalently attached to

chemically‐modified gold surfaces. Plasmonic biosensors

52. The optical properties of noble metal nanoparticles are dominated by an effect called________________

localized surface Plasmon resonance (SPR).

53. One of the consequences of the LSPR effect in metal nanoparticles is that they have very __________due to the resonant coherent oscillation of the plasmons. Strong visible absorption
54. In Amperometric Biosensor the substrate concentration is directly proportional to the________ magnitude of the

current

55. Which one of the following has example glucose by glucose (Blood glucose)? Amperometric Biosensor
56. ___________ is the spread of cancer from one part of the body to another via either the circulatory system or lymphatic system. Metastasis
57. A molecule that specifically recognizes the analyte is known as_________ bioreceptor
58. In a biosensor the role of the transducer is to convert the bio‐recognition event into a measurable signal. This process

of energy conversion is known as _______________ signalization

59. An immunosensor utilizes the very specific binding affinity of antibodies for a specific compound or antigen.
60. The use of _________as the bio‐recognition component of biosensors has several drawbacks. Antibodies
61. ___________ are often used in bioreceptors because they are sensitive to surrounding environment. Cell