Question

pls help .. if u dont no stay away thats it
i need the answer for 7th 9th, 10th.​

Answer 1

Answer:

7), 9), 10)

Explanation:

7): bcz all the known elements could not be arranged as triads. It is not applicable for d and f block elements.

9): it is highly ductile and lusterous .

10): There are many roles of acid in our stomach like :

a) it act as an activator for some enzymes which is essential for food digestion in stomach .

b) it makes the food soft.

c) it kills bacteria so act as an antibacterial agent in stomach.

Answer 2

Answer:

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