Give the names of the elements present in the following compounds:

(a) Quick lime

(b) Hydrogen bromide

(c) Baking powder

(d) Potassium sulphate

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Solution

Compound

Chemical formula

Elements present

Quick lime

CaO

Calcium, Oxygen

Hydrogen bromide

HBr

Hydrogen, Bromine

Baking powder

NaHCO₃

Sodium, Hydrogen, Carbon, Oxygen

Potassium sulphate

K₂SO₄

Potassium, Sulphur, Oxygen

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Compound	Chemical formula	Elements present
Quick lime	CaO	Calcium, Oxygen
Hydrogen bromide	HBr	Hydrogen, Bromine
Baking powder	NaHCO₃	Sodium, Hydrogen, Carbon, Oxygen
Potassium sulphate	K₂SO₄	Potassium, Sulphur, Oxygen