Question

Which of the following statement(s) is/are correct?

Statement 1: When iodine solution is added to chewed boiled rice, the colour of the solution changes to pink.

Statement 2: The starch gets digested by saliva present in the chewed rice.

• A.
  Statement 1: True;
  Statement 2: True
• B.
  Statement 1: False;
  Statement 2: False
• C.
  Statement 1: True;
  Statement 2: False
• D. Statement 1: False;
  Statement 2: True

Answer 1

The correct option is A

Statement 1: True;
Statement 2: True

• Due to the presence of starch in rice, the colour of the rice solution upon addition of iodine solution changes to blackish bluish in colour.
• However, when rice is chewed, the saliva mixes with rice and the starch is broken down into simple sugars.
• This results in the change of the blackish-blue colour into pink colour.