For purification of alumina, the modern processes most useful when $(i)$ the impurity present is a lot of iron oxides and $(ii)$ the impurity present is a lot of silica, are
For purification of alumina, the modern processes most useful when $(i)$ the impurity present is a lot of iron oxides and $(ii)$ the impurity present is a lot of silica, are
- A
For $(i)$ Hall's process; for $(ii)$ Baeyer's process
- B
For $(i)$ Hall's process; for $(ii)$ Serpeck's process
- C
For $(i)$ Serpeck's process; for $(ii)$ Baeyer's process
- D
For $(i)$ Baeyer's process; for $(ii)$ Serpeck's process
Similar Questions
Which of the following compounds is formed by addition of mineral acid to an aqueous solution of borax?
Which of the following compounds is formed by addition of mineral acid to an aqueous solution of borax?
Boric acid is an acid because its molecule
Boric acid is an acid because its molecule
When borax is heated with $CoO$ on a platinum loop, blue coloured bead formed is largely due to
When borax is heated with $CoO$ on a platinum loop, blue coloured bead formed is largely due to
- [JEE MAIN 2022]
Among the following, the correct statement(s) is(are)
$[A]$ $\mathrm{A} 1\left(\mathrm{CH}_3\right)_3$ has the three-centre two-electron bonds in its dimeric structure
$[B]$ $\mathrm{BH}_3$ has the three-centre two-electron bonds in its dimeric structure
$[\mathrm{C}] \mathrm{AlCl}_3$ has the three-centre two-electron bonds in its dimeric structure
$[D]$ The Lewis acidity of $\mathrm{BCl}_5$ is greater than that of $\mathrm{AlCl}_5$
Among the following, the correct statement(s) is(are)
$[A]$ $\mathrm{A} 1\left(\mathrm{CH}_3\right)_3$ has the three-centre two-electron bonds in its dimeric structure
$[B]$ $\mathrm{BH}_3$ has the three-centre two-electron bonds in its dimeric structure
$[\mathrm{C}] \mathrm{AlCl}_3$ has the three-centre two-electron bonds in its dimeric structure
$[D]$ The Lewis acidity of $\mathrm{BCl}_5$ is greater than that of $\mathrm{AlCl}_5$
- [IIT 2017]
Which of the following is an electron deficient molecule?
Which of the following is an electron deficient molecule?