What does the white colored substance in bird droppings consists of?
What is the white coloured substance in bird droppings?
A drop of water is poured over a white powdery substance. Then it is observed that the substance turns blue. Answer the following questions :
(i) What is the white powdery substance?
(ii) Why does the substance change to blue colour?
(iii) Write the chemical formula of the blue substance .
(iv) Is the blue substance an acidic salt or a basic salt?
(v) Give a reason for your answer in (iv).