Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main
Exam
JEE Main
Subject
Chemistry
Chapter
Practical Chemistry

JEE Main · Chemistry · Practical Chemistry

The borax bead is due to formation of

The borax bead is due to formation of

Options

  1. Ametal meta borates
  2. Bmetal tetra borates
  3. Cboron trioxide
  4. Dmetal oxides

Correct answer

A. metal meta borates

Step-by-step solution

Na2B4O7.10H2O→Δ2NaBO2+B2O3N{a}_{2}{B}_{4}{O}_{7} . 10{H}_{2}O\overset{\Delta}{→}2NaB{O}_{2} + {B}_{2}{O}_{3}
Metal oxide+B2O3→[Metal( BO 2)n]\text{Metal oxide}\text{+}{B}_{2} {O}_{3} \to \mathop{\text{[Metal}\left({\text{\text{ BO }}}_{2} {)}_{n}\right]}_{\mathop{\text{Metal}\text{meta borate}}_{\left(\text{coloured}\right)}}
Practice Practical Chemistry on Quantrex Academy →

More from Practical Chemistry

Passage: Consider the following reaction sequence in which J , K , L and M are the major… JEE Advanced 2026Among Fe^ 3+ , Pb^ 2+ , Cu^ 2+ and Mn^ 2+ , identify the one that gets precipitated out… JEE Main 2026Among Fe^ 2+ , Fe^ 3+ , Cr^ 2+ and Zn^ 2+ , the ion that shows positive borax bead test… JEE Main 2026A salt with few drops of conc. HCl gives apple green colour in flame test. The group… JEE Main 2026A student has been given 0.314 g of an organic compound and asked to estimate Sulphur.… JEE Main 2026In the Group analysis of cations, Ba^ 2+ ~\&~ Ca^ 2+ are precipitated respectively as JEE Main 2026Consider three metal chlorides x, y and z, where x is water soluble at room temperature… JEE Main 2026By usual analysis, 1.00 g of compound (X) gave 1.79 g of magnesium pyrophosphate. The… JEE Main 2026 Full Practical Chemistry list All 99 Percentile Qs Bank for JEE Main PYQs