Sample 'A' is mixture of iron fillings and sulphur powder. Sample 'B' is a compound of iron sulphide. A31eema was asked to study the effect of hest on both sample 'A' and 'B'. Which of the following observations was incorrect? (a) Yellow colored sulphur from sample 'A' starts melting. (b) Sample 'A' mixture of iron and sulphur glows (c) No effect of heat on sample 'B' (d) Colour of sample 'B' changes from black to yellow CBSE Class IX Science VSA (1 Mark)

Sample 'A' is mixture of iron fillings and sulphur powder. Sample 'B'

1.	Sample 'A' is mixture of iron fillings and sulphur powder. Sample 'B' is a compound of iron sulphide. A31eema was asked to study the effect of hest on both sample 'A' and 'B'. Which of the following observations was incorrect? (a) Yellow colored sulphur from sample 'A' starts melting. (b) Sample 'A' mixture of iron and sulphur glows (c) No effect of heat on sample 'B' (d) Colour of sample 'B' changes from black to yellow CBSE Class IX Science VSA (1 Mark)
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