Is baking soda chemically different from baking powder?
A. Yes, baking soda is sodium bicarbonate, while baking powder is a mixture of sodium bicarbonate and tartaric acid
B. Yes, baking soda is sodium bicarbonate, while baking powder is calcium carbonate
C. Yes, baking soda is sodium carbonate while baking powder is sodium bicarbonate
D. No, they are chemically similar
Answer: Option A
Which of the following metals cannot be easily cut by a knife?
A. aluminium
B. sodium
C. potassium
D. lithium
The chemical structure of the pearl is
A. Calcium Carbonate
B. Calcium Carbonate & Magnesium Carbonate
C. Calcium Chloride
D. Calcium Sulphate
Stainless steel does not rust because
A. chromium and nickel combine with iron
B. chromium forms an oxide layer and protects iron from rusting
C. nickel present in it, does not rust
D. iron forms a hard chemical compound with chromium present in it

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