Question

7. When Ramesh crushed boiled rice in his mouth and put some amount of iodine solution.
What he observe? Explain your answer with a balanced chemical equation.​

Answer 1

In test-tube A, the boiled rice contains starch. When we add 1-2 drops of iodine, the combination turns in the shade of blue-black. This indicates the presence of starch in the test tube A.  

In test-tube B, the starch of rice converts into sugar on digestion. Thus, the colour of iodine will not change.  

HOPE IT HELPS U :D

Answer 2

Answer:

In test-tube A, the boiled rice contains starch. When we add 1-2 drops of iodine, the combination turns in the shade of blue-black. This indicates the presence of starch in the test tube A.  

In test-tube B, the starch of rice converts into sugar on digestion. Thus, the colour of iodine will not change.

Pb(NO3)2(aq)+2KI(aq)→PbI2(s)(Yellow ppt.)+2KNO3(aq)