Anhydrous $AlC{l_3}$ cannot be obtained from which of the following reactions
Anhydrous $AlC{l_3}$ cannot be obtained from which of the following reactions
- A
Heating $AlC{l_3}.6{H_2}O$
- B
By passing dry $HCl$ over hot aluminium powder
- C
By passing dry $C{l_2}$ over hot aluminium powder
- D
By passing dry $C{l_2}$ over a hot mixture of alumina and coke
Similar Questions
Which of the following statements about ${H_3}B{O_3}$ is not correct
Which of the following statements about ${H_3}B{O_3}$ is not correct
- [AIPMT 1994]
In Hall’s process, the main reagent is mixed with
In Hall’s process, the main reagent is mixed with
Which among the following statement(s) is(are) true for the extraction of aluminium from bauxite?
$(A)$ Hydrated $Al _2 O _3$ precipitates, when $CO _2$ is bubbled through a solution of sodium aluminate.
$(B)$ Addition of $Na _3 AlF _6$ lowers the melting point of alumina.
$(C)$ $CO _2$ is evolved at the anode during electrolysis.
$(D)$ The cathode is a steel vessel with a lining of carbon.
Which among the following statement(s) is(are) true for the extraction of aluminium from bauxite?
$(A)$ Hydrated $Al _2 O _3$ precipitates, when $CO _2$ is bubbled through a solution of sodium aluminate.
$(B)$ Addition of $Na _3 AlF _6$ lowers the melting point of alumina.
$(C)$ $CO _2$ is evolved at the anode during electrolysis.
$(D)$ The cathode is a steel vessel with a lining of carbon.
- [IIT 2020]
Which one is a pseudo alum
Which one is a pseudo alum
$N{a_2}{B_4}{O_7}.10{H_2}O\,\xrightarrow{\Delta }$ $NaB{O_2} + \,(A)\, + \,{H_{2\,}}O(A)\, + $ $MnO\,\xrightarrow{\Delta }\,(B),\,(A)$ and $(B)$ are
$N{a_2}{B_4}{O_7}.10{H_2}O\,\xrightarrow{\Delta }$ $NaB{O_2} + \,(A)\, + \,{H_{2\,}}O(A)\, + $ $MnO\,\xrightarrow{\Delta }\,(B),\,(A)$ and $(B)$ are