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Questions and Answers
What is the phenomenon where some polar crystals produce a small electric current when heated?
What is the phenomenon where some polar crystals produce a small electric current when heated?
- Piezoelectricity
- Ferroelectricity
- Antiferroelectricity
- Pyroelectricity (correct)
Which of the following materials is an example of ferroelectric crystals?
Which of the following materials is an example of ferroelectric crystals?
- KH2PO4 (correct)
- TiO2
- V2O5
- NaCl
What is the name of the electricity produced by piezoelectric crystals when subjected to pressure?
What is the name of the electricity produced by piezoelectric crystals when subjected to pressure?
- Piezoelectricity (correct)
- Antiferroelectricity
- Ferroelectricity
- Pyroelectricity
What is the property of crystals that act as mechanical-electric transducers?
What is the property of crystals that act as mechanical-electric transducers?
Which of the following materials is an example of antiferroelectric crystals?
Which of the following materials is an example of antiferroelectric crystals?
What is the application of ferroelectric crystals in electronic devices?
What is the application of ferroelectric crystals in electronic devices?
What is the characteristic of the electrical conductivity of semiconductors?
What is the characteristic of the electrical conductivity of semiconductors?
What is the result of doping silicon with P (or As, group 5th elements)?
What is the result of doping silicon with P (or As, group 5th elements)?
What is the range of electrical conductivity of transition metal compounds like NiO, FeO, FeS?
What is the range of electrical conductivity of transition metal compounds like NiO, FeO, FeS?
What is the result of doping silicon with Ga (or In/Al, group 3rd elements)?
What is the result of doping silicon with Ga (or In/Al, group 3rd elements)?
What is the characteristic of the electrical conductivity of insulators?
What is the characteristic of the electrical conductivity of insulators?
What is the term for the process of increasing the electrical conductivity of semiconductors by adding impurities?
What is the term for the process of increasing the electrical conductivity of semiconductors by adding impurities?
What is the characteristic of permanent magnetism?
What is the characteristic of permanent magnetism?
Which of the following substances exhibits ferrimagnetism?
Which of the following substances exhibits ferrimagnetism?
What is the result of applying an electric field to a dielectric substance?
What is the result of applying an electric field to a dielectric substance?
What is the characteristic of antiferromagnetism?
What is the characteristic of antiferromagnetism?
Which of the following crystals exhibit piezoelectricity?
Which of the following crystals exhibit piezoelectricity?
What is the cause of polarization in dielectric substances?
What is the cause of polarization in dielectric substances?
What is the reason for anions not occupying an interstitial site in a crystal?
What is the reason for anions not occupying an interstitial site in a crystal?
What type of defect arises when a foreign atom occupies a lattice site in place of a host atom?
What type of defect arises when a foreign atom occupies a lattice site in place of a host atom?
What is the consequence of metal deficiency defects in a crystal?
What is the consequence of metal deficiency defects in a crystal?
What is the result of the movement of an electron from an A+ ion in a crystal?
What is the result of the movement of an electron from an A+ ion in a crystal?
What type of semiconductor is formed when an electron is removed from an atom, resulting in a positive hole?
What type of semiconductor is formed when an electron is removed from an atom, resulting in a positive hole?
What is the condition required for the formation of substitutional solid solutions?
What is the condition required for the formation of substitutional solid solutions?
What is the primary reason for the maintenance of electrical neutrality in metal excess defects due to interstitial cations?
What is the primary reason for the maintenance of electrical neutrality in metal excess defects due to interstitial cations?
Which of the following compounds is likely to exhibit Frenkel defects due to the size difference between cations and anions?
Which of the following compounds is likely to exhibit Frenkel defects due to the size difference between cations and anions?
What is the characteristic of non-stoichiometric defects in crystals like ZnO?
What is the characteristic of non-stoichiometric defects in crystals like ZnO?
Which of the following defects is not found in pure alkali metal halides?
Which of the following defects is not found in pure alkali metal halides?
What is the result of simultaneous occurrence of Schottky and Frenkel defects in a crystal?
What is the result of simultaneous occurrence of Schottky and Frenkel defects in a crystal?
Which of the following defects is responsible for the yellow color of non-stoichiometric ZnO?
Which of the following defects is responsible for the yellow color of non-stoichiometric ZnO?
What is the temperature at which a material enters the superconducting state?
What is the temperature at which a material enters the superconducting state?
What is the characteristic of materials that exhibit superconductivity?
What is the characteristic of materials that exhibit superconductivity?
Which of the following materials is an example of a superconducting material?
Which of the following materials is an example of a superconducting material?
What is the phenomenon observed in lead (Pb) at 7.2 K?
What is the phenomenon observed in lead (Pb) at 7.2 K?
What is the behavior of diamagnetic substances when placed in a magnetic field?
What is the behavior of diamagnetic substances when placed in a magnetic field?
Which of the following materials is an example of a paramagnetic substance?
Which of the following materials is an example of a paramagnetic substance?
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