Question

12. Airon Jay is fond of eating cereal drink even if he is already in grade 7. What
compounds do Airon Jay has taken?
1. Iron pyrophosphate
II. Calcium chloride
III. Sodium bicarbonate
IV. Zinc sulfate
A. I and II only
B. I and III only
C. II and III only
D. I and IV only

13. Danica was assigned by her teacher to match compound with its constituent
elements. Which do you think of her matched pair are correct?
1. Caicium chloride : calcium, chiorine
II. Water : nitrogen, oxygen
III. Carbon dioxide; carbon, oxygen
IV. Salt: sodium, magnesium
A. I and II only
B. I and III only
C. II and III only
D. I and IV only​

Answer 1

Answer:

The answer of the following question is:

12. Option B

13. Option B

Explanation:

• The compounds  Airon Jay has taken in his cereal drink is Iron pyrophosphate and Sodium bicarbonate. Cereal drink contains this compounds with starch and glucose. The consituent elements of it is water, oxygen and carbonate etc.

• Danica was assigned by her teacher to match compound with its constituent  elements. The correct pair is :
• Calcium chloride : calcium, chlorine
• Carbon dioxide; carbon, oxygen.

These compounds made from this constituent elements

Answer 2

Answer:

12. Oprion B is the answer here

13. Option B is the answer here.

Explanation: