Borax on heating strongly above its melting point melts to a liquid, then solidifies to a transparent mass commonly known as Borax Bead. The transparent glassy mass consists of :
Borax on heating strongly above its melting point melts to a liquid, then solidifies to a transparent mass commonly known as Borax Bead. The transparent glassy mass consists of :
- A
sodium pyroborate
- B
boric anhydride
- C
sodium metaborate
- D
mixture of sodium metaborate and boric anhydride
Similar Questions
Given below are two statements :
Statement $I$ : Gallium is used in the manufacturing of thermometers.
Statement $II$ : A thermometer containing gallium is useful for measuring the freezing point ( $256 \mathrm{~K}$ ) of brine solution.
In the light of the above statement, choose the correct answer from the options given below :
Given below are two statements :
Statement $I$ : Gallium is used in the manufacturing of thermometers.
Statement $II$ : A thermometer containing gallium is useful for measuring the freezing point ( $256 \mathrm{~K}$ ) of brine solution.
In the light of the above statement, choose the correct answer from the options given below :
- [JEE MAIN 2024]
Purification of aluminium done by electrolytic refining is known as
Purification of aluminium done by electrolytic refining is known as
- [AIPMT 1999]
The liquefied metal which expands on solidification is
The liquefied metal which expands on solidification is
- [AIIMS 2016]
Heating an aqueous solution of aluminium chloride to dryness will give
Heating an aqueous solution of aluminium chloride to dryness will give
- [AIEEE 2005]
Which reactions can be used to prepare diborane
$I.\,\,NaBH_4 + BF_3$ (in ether) $\to $
$II.\,\, NaBH_4 + I_2 \to $
$III.\,\, BF_3 + NaH \to $
Which reactions can be used to prepare diborane
$I.\,\,NaBH_4 + BF_3$ (in ether) $\to $
$II.\,\, NaBH_4 + I_2 \to $
$III.\,\, BF_3 + NaH \to $