Which of the following substances are blue – InterviewSolution

1.	Which of the following substances are blue
Answer» `Fe(BO_(2))_(2)` `CoAl_(2)O_(4)` `Co(BO_(2))_(2)` `NaCoPO_(4)` Solution :`CoAl_(2)O_(4)(BO_(2))_(2)` and `NaCOPO_(4)` are BLUE COLOUR SUBSTANCES

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