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प्रश्न
Give the uses of Borax.
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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
Boric acid is an acid because its molecule ____________.
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 ____________.
Give one example for the following.
Icosogens
Complete the following reaction.
\[\ce{B2H6 +CH3OH ->}\]
Complete the following reaction.
\[\ce{BF3 + 9H2O ->}\]
Complete the following reaction.
\[\ce{H2B4O7 ->[Red hot]}\]
How will you identify borate radical?
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.
