Magnets attract magnetic substances such as iron, nickel, cobalt etc. They can also repel :

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Q: 23 (NDA-I/2011)
Magnets attract magnetic substances such as iron, nickel, cobalt etc. They can also repel :
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question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,10,12,5,6,10,1

keywords: 

{'magnetic substances': [0, 0, 0, 1], 'ferromagnetic substances': [0, 0, 0, 1], 'diamagnetic substances': [0, 0, 0, 1], 'magnets': [0, 0, 0, 1], 'paramagnetic substances': [0, 0, 0, 1], 'cobalt etc': [0, 0, 0, 1], 'iron': [0, 0, 1, 1]}