Foods containing starch will turn a blue-black colour. The iodine test can also be used with a microscope to stain starch grains in plant cells. Wear safety goggles. Sudan III solution is ...

Using a dropper, place a few drops of iodine solution onto the food. Record any change in the colour of the solution. Benedict's solution gradually turns from blue to cloudy orange or brick red ...

Is your readymade chilli powder fully safe to consume? This common ingredient can be adulterated with various substances to increase weight, enhance colour or reduce production costs. Red chilli ...