Multiple choice question

iz'u&19 xkayd fdl dgrs gS\ bldk pquko djrs le; fdl [kkl ckr dk /;ku j[kk
tkrk gS\ vEyh; ,oa {kkjh; xkydksaa dk ,d&,d mnkgj.k nhft;s\
What is flux? What speciality while selecting it is kept in mind? Give one
example for acidic and basic flux each?
iz'u&20 xksYMf'eV ,Y;wehuks FkfeZd fof/k D;k gS\ bl fof/k esa iz;qDr la;a= dk fp=
,oa jklk;fud vfHkfØ;k ds lehdj.k nhft;s\
What is Goldschimit’s Alumino thermic process? Draw diagram for its
apparatus and give chemical reaction that take place in this process?
iz'u&21 D;wisyhdj.k D;k gS\ [kiZj ds fp= lfgr iz;qDr HkV~Vh ftlesa [kiZj ls
v'kqf);k¡ nwj dh tkrh gS dk fp= nhft;s\ ;g fof/k fdu /kkrqvksa ds
'kq)hdj.k gsrq iz;qDr dh tkrh gS\
What is Cupellation? Give diagram of Cupel and the furnace used for its
purification? This method is used for purification of which metals?
iz'u&22 okR;k HkV~Vh dk ukekafdr fp= U;wure ,oa vf/kdre rkieku n'kkZrs gq,
nhft;s\ /kkrq ey D;k gksrk gS\ HkV~Vh ds vanj gksus okyh jklk;fud
vfHkfØ;k,sa Hkh nhft;s\
Give labelled diagram of Blast furnace with its minimum and maximum range
of temperature. What is Slag? Give chemical reactions taking place in this
furnace?
iz'u&23 cslsej ifjorZd dk fp= nsrs gq, blesa gksus okyh jklk;fud vfHkfØ;kvksa dk
o.kZr dhft;s\ bls fdu /kkrqvks ds fy;s iz;ksx esa yk;k tkrk gS\
Describe reactions and draw diagram for Bessemer converter? For what metals
this process is used?
iz'u&24 fo|qr vi?kVuh 'kks/ku fdl fl)kUr ij vk/kkfjr gS\ ;g fof/k fdu /kkrqvksa
ds 'kks/ku gsrq iz;qDr dh tkrh gS\ blesa /kkrq esa mifLFkr v'kqf);k¡ fdl
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