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JEE Main 201226 MayOnline
Exam
JEE Main
Year
2012
Date
26 May
Mode
Online
Subject
Chemistry
Chapter
Solid State

JEE Main 2012 · 26 May · Online · Chemistry · Solid State

Among the following the incorrect statement is

Among the following the incorrect statement is

Options

  1. ADensity of crystals remains unaffected due to Frenkel defect.
  2. BIn BCC unit cell the void space is 32%32 \%.
  3. CDensity of crystals decreases due to Schottky defect.
  4. DElectrical conductivity of semiconductors and metals increases with increase in temperature.

Correct answer

D. Electrical conductivity of semiconductors and metals increases with increase in temperature.

Step-by-step solution

The electrical resistance of metals depends upon temperature. Electrical resistance decreases with decrease in temperature and becomes zero near the absolute temperature. Material in this state is said to possess super conductivity.
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