The monomer melamine has a chemical name :

2, 4, 6 - trimino - 1, 3, 5 - triazine

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1, 3, 5 - trimino - 2, 4, 6 - triazine

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2, 4 - dimino - 1, 3, 5 - triazine

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2 - amino - 1, 3, 5 - triazine

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Solution

The correct option is A 2, 4, 6 - trimino - 1, 3, 5 - triazine
Melamine is an organic base and a trimer of cyanamide, with a 1, 3, 5 - triazine skeleton.
The monomer chemical name is 2, 4, 6 - triamino - 1, 3, 5 - triazine.
Hence, option A is correct.

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