Advertisements
Advertisements
प्रश्न
Complete the following reaction.
\[\ce{H2B4O7 ->[Red hot]}\]
उत्तर
\[\ce{H2B4O7 ->[Red hot] \underset{\text{(Boric anhydride)}}{2B2O3} + H2O}\]
APPEARS IN
संबंधित प्रश्न
Which among the following is not a borane?
Which of the following metals has the largest abundance in the earth’s crust?
Match items in Column – I with the items of Column – II and assign the correct code.
| Column – I | Column – II |
| A. Borazole | 1. B(OH)3 |
| B. Boric acid | 2. B3N3H6 |
| C. Quartz | 3. Na2[B4O5(OH)4]8H2O |
| D. Borax | 4. SiO2 |
Duralumin is an alloy of ____________.
The compound that is used in nuclear reactors as protective shields and control rods is ____________.
Give the uses of Borax.
Complete the following reaction.
\[\ce{Na2B4O7 + H2SO4 + H2O ->}\]
Complete the following reaction.
\[\ce{B2H6 +CH3OH ->}\]
A hydride of 2nd period alkali metal (A) on reaction with a compound of Boron (B) to give a reducing agent (C). identify A, B and C.
A double salt which contains fourth-period alkali metal (A) on heating at 500 K gives (B). aqueous solution of (B) gives white precipitate with BaCl2 and gives a red colour compound with alizarin. Identify A and B.
