Multiple choice question

Describe electrolytic method for getting Al metal from Alumina with the
help of a diagram? Give chemical equations also? Why Floarspar (CaF 2 ) and
cryolyte (Na 3 AlF 6 ) are mixed with alumina?
iz'u&26 gwi dh fof/k ls ,Y;wehfu;e /kkrq ds 'kks/ku dks fp= dh lgk;rk ls le>kb;s\
bl fof/k ls izkIr /kkrq fdl Lrj dh 'kq)rk okyh gksrh gS\
With the help of a diagram describe purification of Al metal by hoop’s method?
Metal thus obtained is of which quality so far as purity is concerned?
iz'u&27 FkekZbV oSfYMax D;k gS\ bls fp= ,oa jklk;fud fØ;k dh lgk;rk ls Li"V
djks\
What is Thermite belding? Explain with the help of a diagram and chemical
reaction that take place?
iz'u&28 futZy ,Y;wehfu;e DyksjkbM cukus dh dksbZ nks fof/k;k¡ lehdj.k lfgr
nhft;s\ bldh fuEu ds lkFk jklk;fud fØ;kvksa ds lehdj.k n'kkZb;s\ dksbZ
nks mi;ksx Hkh fyf[k;s\
(a) tyh; foy; esa ty vi?kVu ls izkIr foy;u dh iz—fr
(b) veksfu;k¡ ds lkFk fØ;k (c) NaOH ls fØ;k
Give any two methods for preperation of anhydrous AlCl 3 long with chemical
equation? Give equations for the reaction with the following also give any
two uses of it?
(a) Nature of solution produced on hydrolysis
(b) Reaction with NH 3
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(c) Reaction with NaOH
iz'u&29 ,Y;wehfu;e ds f}d yo.k dk dksbZ mnkgj.k nhft;s\ ,ye fdls dgk tkrk
gS] bldk lkekU; lw= fy[kks\ Nn~e ,ye fdUgsa dgsaxs\
Give any example of a double salt of Aluminium. What are alums give their
general formula? What are pseudo alums?