If the electrical resistance of a typical substance suddenly drops to zero, then the substance is called :

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Q: 16 (NDA-I/2011)
If the electrical resistance of a typical substance suddenly drops to zero, then the substance is called :
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question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,22,17,22,6,4,7

keywords: 

{'super conductor': [0, 0, 0, 1], 'electrical resistance': [0, 0, 0, 1], 'conductor': [0, 0, 1, 2], 'semiconductor': [0, 0, 0, 2], 'insulator': [0, 0, 0, 2], 'substance': [2, 1, 7, 7], 'typical substance': [0, 0, 0, 1]}