Question

Chemically epsom salt is _______

• A. Sodium
• B. Magnesium
• C. Potassium
• D. Calcium

Hint:

Epsom salt is magnesium sulphate, \(MgSO_4 \cdot 7H_2O\).

Answer 1

The Correct Option is B

Concept:
Epsom salt is the common name of magnesium sulphate.

Step 1: Chemical identity of epsom salt.
Epsom salt is chemically magnesium sulphate. \[ \text{Epsom salt} = MgSO_4 \cdot 7H_2O \]

Step 2: Understanding the blank.
The question says epsom salt is sulphate. Since epsom salt is magnesium sulphate, the blank must be magnesium.

Step 3: Checking other options.
Sodium sulphate, potassium sulphate, and calcium sulphate are different salts and are not called epsom salt.

Step 4: Final answer.
Thus, chemically epsom salt is magnesium sulphate. \[ \boxed{\text{Magnesium}} \]