Question

For question numbers 14, 15 and 16, two statements are given- one labeled Assertion (A) and the other labele
Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:
a) Both A and R are true, and R is correct explanation of the assertion.
b) Both A and Rare true, but R is not the correct explanation of the assertion.
c) A is true, but R is false.
d) A is false, but R is true.
14. Assertion (A): Iron articles get coated with reddish brown powder when left for sometimes in the open.
Reason (R): Iron is attacked by substances around it such as moisture, acids, etc.
15. Assertion (A): Antacids are used to get rid of pain caused by indigestion.
Reason (R): Antacids neutralise the excess acid produced in the stomach.
16. Assertion (A): Tooth decay starts when the PH of the mouth is lower than 5.5.
Reason (R): Bee-sting leaves an acid which caused pain and irritation.
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Answer 1

Answer:

14. Assertion (A): Iron articles get coated with reddish brown powder when left for sometimes in the open.

Reason (R): Iron is attacked by substances around it such as moisture, acids, etc.

option (a)

15. Assertion (A): Antacids are used to get rid of pain caused by indigestion.

Reason (R): Antacids neutralise the excess acid produced in the stomach.

option (a)

16. Assertion (A): Tooth decay starts when the PH of the mouth is lower than 5.5.

Reason (R): Bee-sting leaves an acid which caused pain and irritation.

option (b)

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