What is not true about borax ?
What is not true about borax ?
- A
Molecular formula is $Na_2B_4O_7.10H_2O$
- B
Crystalline borax also contains tetra nuclear unit
- C
It hydrolyses to give an acidic solution
- D
White crystalline solid
Similar Questions
Describe the shapes of $BF $$_{3}$ and $BH _{4}^{-}$. Assign the hybridisation of boron in these species.
Describe the shapes of $BF $$_{3}$ and $BH _{4}^{-}$. Assign the hybridisation of boron in these species.
The compound($s$) which react($s$) with $NH _3$ to give boron nitride ($BN$) is(are)
$(A)$ $B$ $(B)$ $B _2 H _6$ $(C)$ $B _2 O _3$ $(D)$ $HBF _4$
The compound($s$) which react($s$) with $NH _3$ to give boron nitride ($BN$) is(are)
$(A)$ $B$ $(B)$ $B _2 H _6$ $(C)$ $B _2 O _3$ $(D)$ $HBF _4$
- [IIT 2022]
In the commercial electrochemical process for aluminium extraction, the electrolyte used is
In the commercial electrochemical process for aluminium extraction, the electrolyte used is
- [IIT 1999]
$B{X_3} + N{H_3}\xrightarrow{{R.T}}B{X_3}.N{H_3} + Heat\,of\,adduct\,formation\,\left( {\Delta H} \right)$ The numerical value of $\Delta H$ is found to be maximum for
$B{X_3} + N{H_3}\xrightarrow{{R.T}}B{X_3}.N{H_3} + Heat\,of\,adduct\,formation\,\left( {\Delta H} \right)$ The numerical value of $\Delta H$ is found to be maximum for
Match List$-I$ with List$-II :$
List$-I$
List$-II$
$(a)$ $\mathrm{NaOH}$
$(i)$ Acidic
$(b)$ $\mathrm{Be}(\mathrm{OH})_{2}$
$(ii)$ Basic
$(c)$ $\mathrm{Ca}(\mathrm{OH})_{2}$
$(iii)$ Amphoteric
$(d)$ $\mathrm{B}(\mathrm{OH})_{3}$
$(e)$ $\mathrm{Al}(\mathrm{OH})_{3}$
Choose the most appropriate answer from the option given below :
Match List$-I$ with List$-II :$
| List$-I$ | List$-II$ |
| $(a)$ $\mathrm{NaOH}$ | $(i)$ Acidic |
| $(b)$ $\mathrm{Be}(\mathrm{OH})_{2}$ | $(ii)$ Basic |
| $(c)$ $\mathrm{Ca}(\mathrm{OH})_{2}$ |
$(iii)$ Amphoteric |
| $(d)$ $\mathrm{B}(\mathrm{OH})_{3}$ | |
| $(e)$ $\mathrm{Al}(\mathrm{OH})_{3}$ |
Choose the most appropriate answer from the option given below :
- [JEE MAIN 2021]