can anyone plzzzz provide me a colour and name of element and gas name present in NCERT Book alll name of marble like substances and their chemical formula once again plzzzzzzzzzzzzzz I quite confuse when colour question was asked like when n metal heat then it produce this colour gas it just a example.i am in class 10 and I want full marks in science and wish to score 90+ so plzzzz provide me alll names those who answer I will make this brainlist with my other 30 friends who use brainly. plzzz it is a humble request
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CaO Black
CuSO4 blue FeSO4 blue
NO2 brown
Fe203 reddish brown
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