NEET UG CHEMISTRY MCQ: SOLID STATE

1 Easy

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Extremely pure samples of

\mathrm{Ge}\;\mathrm{ and }\;\mathrm{Si}

are non-conductors, but their conductivity increases suddenly on introducing ….in their crystal lattice.

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because doping with either Arsenic (As) or Boron (B) increases the conductivity of Germanium (Ge) and Silicon (Si).

More Questions from SOLID STATE

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Schottky defect in crystals is observed when Calculate the ionic radius of a

\mathrm{C}{\mathrm{s}^ + }

ion, assuming that the cell edge length for CsCl is 0.4123 nm and that the ionic radius of a

\mathrm{C}{\mathrm{I}^ - }

ion is

\;0.181\,\,nm

Wrong match is A molecule contains atoms

A

and

B

such that

A

occurs at the corners of the cube and

Y

at the face centres. The formula of the molecule is Which species is diamagnetic ? The arrangement ABCABC……is referred to as,