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प्रश्न
Give the uses of Borax.
उत्तर
Uses of borax:
- Borax is used for the identification of coloured metal ions.
- In the manufacture optical and borosilicate glass, enamels and glazes for pottery.
- It is also used as a flux in metallurgy and also acts as a good preservative.
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संबंधित प्रश्न
In diborane, the number of electrons that accounts for banana bonds is ____________.
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 ____________.
Describe the structure of diborane.
Complete the following reaction.
\[\ce{Na2B4O7 + H2SO4 + H2O ->}\]
Complete the following reaction.
\[\ce{B2H6 + 2NaOH + 2H2O ->}\]
Complete the following reaction.
\[\ce{B2H6 +CH3OH ->}\]
Complete the following reaction.
\[\ce{H2B4O7 ->[Red hot]}\]
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.
