Can anyone help ? Electrical insulators such as SiO_2 are characterized by a ver

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Electrical insulators such as SiO_2 are characterized by a very large energy gap. Silicon (Si) is an example of a compound semiconductor. The number of free electrons in an intrinsic semiconductor increases with increasing temperature The electric resistivity of metals increases with increasing temperature Copolymer is a polymeric material whose chains contain us: a since type of mer units. The electric conductivity of a material is the reciprocal of its electric resistance. The solubility of C is higher in alpha -Fe (bcc) than in gamma -Fe (fcc) Two oppositely charged ion vacancies in crystalline ceramics are known as Frenkel defects. In carbon steels water quenching from the austenite temperature promotes the formation of pearlite. In crystalline ceramics, impurities typically reduce the number of point defects. The magnitude of the hole mobility in semi conductors is significantly higher than the electron mobility. Extrinsic p type semiconductors are doped using group V impurities

Explanation / Answer

True/False statement

(1) Electrical insulators have large energy gap = True

(2) Silicon is a compound semiconductor = True

(3) The number of electrons in intrinsci semiconductor increases with temperature = False

(4) The elctric resistivity of material increases with temperature = True

(5) Copolymer is a polymer with single type of mer units = False

(6) The electrical conductivity os material is reciprocal of electrical resistivity = True

(7) Solubility of C is higher in alpha-Fe (bcc) than gamma-Fe (fcc) = False

(8) Two opossitvely charged vacancies in crystalline ceramic are knows as frenkel defect = True

(9) Carbon steel water quenching in austensite temperature promotes formation of pearlite = True

(10) Impurities reduce point defects in crystalline cermamic = True

(11) The magnitude of hole mobility in semiconductor is significantly higher than the electron mobility = False

(12) Exrtrinsic p-type semiconductor are doped using group V impurities = True

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