Question

1. Given below from () to (iv) are some food items
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give blue-black colour when tested with iodine?
(a) () and (ii)
(b) () and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)
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Answer 1

Answer:

I boiled mash potatoes became they contain starch