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NCERT FINGERTIPS-THE SOLID STATE -Assertion And Reason
- Assertion:At low temperature , particles of matter occupy fixed positi...
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- Assertion: Quartz glass is crystalline solid and quartz is an amorphou...
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- Assertion: Glass panes fixed to windows or doors of old buildings are ...
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- Crystalline solids have
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- Assertion:SiC has higher melting point than NaCl. Reason: SiC has st...
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- Assertion:Face centred cubic cell has 4 atoms per unit cell. Reason:...
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- Assertion:A tetrahedral void is surrounded by four spheres and an octa...
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- Assertion : CsCI has body - centred cunic arrangement Reason: CsCI ...
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- Assertion:Packing efficiency of body centred cubic structure is 68% ...
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- Assertion:Frenkel defect is also called dislocation defect Reason:Fr...
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- Assertion :-(A) semiconductors are solids with conductivites in t...
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- Metals are good conductor of electricity because they contain
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- Assertion:Diode is a combination of n-type and p-type semiconductors. ...
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- Assertion:Iron, cobalt, nickel and CrO2 are called ferromagnetic subst...
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- Assertion:Substances like Fe3O4 and MgFe2O4 lose ferrimagnetism on hea...
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