Engineering Chemistry Functional Materials Online Exam Quiz
Engineering Chemistry Functional Materials GK Quiz. Question and Answers related to Engineering Chemistry Functional Materials. MCQ (Multiple Choice Questions with answers about Engineering Chemistry Functional Materials
The amplification factor for transistor when used as an amplifier will be ___________
Options
A : 25
B : 50
C : 75
D : 100
The critical temperature for the cuprate La2CuO4 is ___________
Options
A : 40 K
B : 90 K
C : 125 K
D : 35 K
Select the incorrect statement from the following option.
Options
A : Nitinol is a non-magnetic material
B : It has a shape memory strain of about 8.5%
C : It has lower ductility than other shape memory alloys like Au-Cd
D : It possess excellent corrosion resistant
The dielectric material that shows spontaneous and reversible dielectric polarisation are ___________
Options
A : Piezoelectrics
B : Pyroelectrics
C : Ferroelectrics
D : None of the mentioned
The correct sequence for the procedure adopted for making a pure elemental semiconductor consist of ___________
Options
A : Preparation of ultrapure Si or Ge >> Doping >> Preparation of single crystals of Si or Ge
B : Doping >> Preparation of ultrapure Si or Ge >> Preparation of single crystals of Si or Ge
C : Preparation of ultrapure Si or Ge >> Preparation of single crystals of Si or Ge >> Doping
D : Preparation of single crystals of Si or Ge >> Preparation of ultrapure Si or Ge >> Doping
Identify the class of the superconductor to which TiO and NbO belong.
Options
A : Simple compounds
B : Nonstoichiometric crystals having defects
C : Charge-transfer compounds
D : Molecular crystals
The materials which offer no resistance to the passage of electricity are ___________
Options
A : Superconductors
B : Semiconductors
C : Optical fibre
D : Smart material
Optical fibre can be safely used for signal transmission near the nuclear installation because ___________
Options
A : There is no leakage of signals
B : Plastic cladded silica fibres are resistant to nuclear radiations
C : Plastic cladded silica fibres are not resistant to nuclear radiations
D : There is no electromagnetic interference
What is the principle on which an optical fibre works?
Options
A : Total internal reflection
B : Farraday’s law of induction
C : Doppler Effect
D : Hooke’s law
Which of the following is not an application of a transistor?
Options
A : Tunnel diodes
B : Thermistors
C : Amplifiers
D : None of the mentioned
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