Question

2. Which of the following food items will not show a positive iodine test for starch?
a. A slice of potato
b. Cooked rice
c. Mustard oil
d. A slice of bread​

Answer 1

Answer:

a slice of potato this is a correct answer

Answer 2

Option C
Starch is a form of carbohydrate(sugar). So those food items which do not have starch, i.e do not have carbohydrates in them will not show a positive iodine test.

a,b and d have carbohydrates.

Mustard oil does not have carbohydrates. Hence will not show positive iodine test