Multiple choice question

4 4 4 ,oa ,oa ,oa 5 5 5 vad vad okys okys iz'u
iz'u
iz'u&33 fXyljhu dk DoFkukad 290°C gS fdUrq ;g 200°C ij gh vi?kfVr gksuk
vkjEHk dj nsrh gS rc bldk 'kks/ku djus esa D;k ;qfDr iz;qDr dh tkrh gS
mYys[k djsa rFkk vko';d gks rks fp= dh lgk;rk Hkh ysa\
Glycerene whose boiling point is 290°C but it’s decomposition starts at
200°C. What measures should be applied for its purification, if necessary
draw labelled diagram?
iz'u&34 fuEu ij laf{kIr uksV fy[ks rFkk vko';d fp= Hkh nsa&
(a) fØLVyhdj.k (b) dkWye ØksesVksxzkQh (c) isij ØksesVksxzkQh
Write short notes on the following–
(a) Crystalization (b) Column Chromatography (c) Paper chromatography
iz'u&35 dkcZfud rRoksa ds ijh{k.k esa lksfM;e fu"d"kZ cukuk D;ksa vko';d gS\
ukbVªkstu lYQj rFkk gSykstuksa ds ijh{k.k ,oa gksus okyh jklk;fud vfHkfØ;kvksa
ds lehdj.k nhft;s\
Why preperation of sodium extract for detection of elements in organic
compound is necessary? Give tests for nitrogen, sulphur and halogens with
chemical equations for the reactions taking place?
iz'u&36 ukbVªkstu ds vkadyu dh I;wek fof/k dk fp= ,oa izs{k.k x.kuk nhft;s\
Give diagram and observation taken in Puma method for N detection?
iz'u&37 ukbVªkstu ds fy;s tsYMky fof/k dc iz;qDr gksrh gSA blls N dh izfr'kr ek=k
Kkr djus gsrq lw= dh O;qRifUr nhft;s\
When Kjeldahl’s method for detection of N percentage is applied? Deduce
the formula for percentage of N estimation?
iz'u&38 ,d dkcZfud ;kSfxd ds 0.2475 gm inkFkZ ds ngu ij 0.495 gm CO 2 rFkk
0.2025 xzke H 2 O izkIr gqvkA blds ewykuqikrh lw= dh x.kuk djks\
85