What happens when glass is heated?

  • A
    It turns into a gas.
  • B
    It melts and its sharp edges become rounded.
  • C
    It remains unchanged.
  • D
    It turns into a crystalline solid.

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$STATEMENT-1$: Band gap in germanium is small.
$STATEMENT-2$: The energy spread of each germanium atomic energy level is infinitesimally small.

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