The rea colour of the blood is due to the presence of haemoglobin in it. Certain skeletal muscles are red in colour eventhough they lack haemoglobin. Now explain how the red muscles have that particular colour.

Blood cell of earthworm lack haemoglobin. But blood of earthworm is red in colour. How do you account for it?

The blood red colouration obtained during the test for nitrogen indicates the presence of which elements?

F centre is an example of metal excess defect due to the presence of extra cations at interstitial sites. Zinc oxide is white in colour at room temperature, on heating it loses oxygen and turns yellow. ZnO overset("Heat")toZn^(2+)+(1)/(2)O_(2)+2e^(-) Now there is excess of zinc in the crystal and its formula becomes Zn_(1+x) O. the excess of Zn^(2+) ions move to interstitial sites and the electrons to neighbouring interstitial sites. There are many solids which are difficult to prepare in the stiochiometric composition and contain less amount of the metal as compared to stiochiometric proportion. a typical example of this type is FeO which is mostly found with a composition of Fe_(0.95) . it may actually range from Fe_(0.96) O. Q. In Fe_(0.95) O:

Assertion:Aqueous gold sol is red in colour. Reason:The colour arises due to scattering of light by colloidal gold particles.