Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Chemistry

Baking soda is used ______.

I. for making baking powder

II. in soda-acid fire extinguishers

III. to neutralize excess acid in the stomach

1

Only I and II

2

Only I and III

3

Only II and III

4

All I, II and III

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