Multiple choice question

iz'u&25 thou esa jlk;u foKku ds fofHkUu {ks=ks esa fn;s x;s ;ksxnku ij izdk'k
Mkfy;sA
Through light on the contribution of chemistry in different fields of life.
iz'u&26 ewykuqikrh lw=] v.kqlw= ,oa buds e/; lEcU/k dks mnkgj.k dh lgk;rk ls
Li"V dhft;sA
Explain with the help of suitable example the terms emperical and molecular
formulae and the relationship among these two.
iz'u&27 fuEufyf[kr v.kqlw= okys ;kSfxdksa ds laHkkfor ewykuqikrh lw= Kkr dhft;s
rFkk bu ewykuqikrh lw=ksa ds vk/kkj ij v.kqlw= ds fy;s lkekU; QkewZyk
n'kkZb;sA
(a) C H O 6 12 6 (b) C H 6 6 (c) Na CO 2 3 (d) C H 2 6
Find out the possible empherical formulae for the following molecular
formulas and draw a general formula from these empherical formulas for a
molecular one.
(a) C 6 H 12 O 6 (b) C 6 H 6 (c) Na 2 CO 3 (d) C 2 H 6
iz'u&28 jklk;fud lehdj.k dh D;k&D;k lhek;sa gSa\ buls D;k&D;k lwpuk izkIr
gksrh gS vkSj D;k ugha\
What are the limitations of a chemical equation what informations it imparts
and what are not imported?
iz'u&29 fuEu izfr'kr ek=kvksa ls ewykuqikrh lw= ,oa v.kqlw= Hkkjksa dh x.kuk dhft;s\
Calculate empherical and molecular formula weight from the given data?
Al 2 O 3 —— 39.5% (Formula Weight) 102
SiO —— 46.6% (Formula Weight) 60 (Empherical Formula Wt.=180)
2
H 2 O —— 13.9% (Formula Weight) 18
6