Question

Rajesh took 5 ml of starch solution in two cups. one cup was red and the other was blue. After putting iodine solution he could see blue black colour in the red cup however there was no colour change in the blue cup. in which cup had he put saliva? give reason to support your answer ​

Answer 1

Answer:

Rajesh had put saliva in blue cup. The colour of the starch solution did not change because saliva does not produce blue black colour like iodine.

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