Which among the following is the correct composition of Borax ?

[amp_mcq option1=”Sodium, Boron, Magnesium and Hydrogen” option2=”Sodium, Boron, Oxygen and Hydrogen” option3=”Potassium, Boron, Oxygen and Hydrogen” option4=”Sodium, Boron, Nitrogen and Hydrogen” correct=”option2″]

This question was previously asked in

UPSC NDA-1 – 2024

Download PDF Attempt Online

The correct composition of Borax includes Sodium, Boron, Oxygen, and Hydrogen.

Borax is commonly found as the mineral sodium tetraborate decahydrate, with the chemical formula Na₂B₄O₇·10H₂O. This formula clearly shows the presence of Sodium (Na), Boron (B), Oxygen (O), and Hydrogen (H).

The B₄O₇²⁻ anion in borax is actually a complex polyborate ion, often more accurately represented as [B₄O₅(OH)₄]²⁻ in its hydrated forms. The decahydrate contains 10 water molecules of crystallization.

More similar MCQ questions for Exam preparation:-