IGCSE CHEM PRACTICAL 52

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Any tips on this? I'm having a hard time describing the colour, sometimes the colour is not a solid colour like orange or black. How do I interpret it successfully?
Another thing if the Mark Scheme said getting paler, but I wrote getting lighter, is it correct? Does the examiner mark to exact or if something is similar it is mark as a right answer.

Thanks !
 
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Ummm... Someone else answer that??? And As far as the last part is concerned I guess he does not mark to the exact I hope its that so...
 
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