Complete the following paragraph by filling in the blanks ( i ) to (v) with appropriate words :
To test a leaf for starch, the leaf is boiled in water to (i) ________. It is then boiled in Methylated spirit to (ii)________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (iii) ________. solution is added. The region of the leaf which contains starch, turns (iv) ________. and the region which does not contain starch, turns (v) ________.