Question

A.
Multiple Choice Questions:
1. Given below from (i) 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 following will give blue-black colour when tested with iodine?
(a) (i) and (ii)
b) (i) and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)
2. Which of the grinding teeth are pre
8
ent
[NCERT Exemplar Problems)​

Answer 1

Answer:

1.) a) (i) and (ii)

Explanation:

.....................

Answer 2

Answer:

Answer of first MCQ is (b)

Explanation:

First MCQ explanation

If starch is mixed with iodine, it gives a blue-black colour.

The 'boiled and mashed potato' and a 'slice of bread' contain starch and all other options are not containing starch. So, 'boiled and mashed potato' and a 'slice of bread' will give blue-black colour when it tested with iodine.

The correct answer is option (b).