Multiple choice question

2 ftu nzo inkFkksZ ds DoFkukad fHkUu gksrs gS] muds feJ.k dks vyx fd;k tk
ldrk gS&
(a) vkaf'kd vklou fof/k }kjk (b) eki vklou fof/k }kjk
(c) isij ØksesVksxzkQh }kjk (d) NUud fof/k }kjk
A mixture of liquids having components of different boiling points can be
seperated by the method–
(a) Fractional distillation (b) Steam distillation
(c) Paper chromatography (d) Micro filtration
3 tc fdlh foyk;d esa yxHkx leku foys;rk j[kus okys inkFkZ ?kqys gks rks
mudks i`Fkd djus dh fof/k gksxh&
(a) Å?oZikru (b) vklou
(c) izHkkth ØLVyu (d) de nkc ij vklou
When two or more substances having almost same level of solubility can be
seperated by the method–
(a) Sublimation (b) Distillation
(c) Fractional crystalization (d) Distillation under reduced pressure
4 dkcZfud inkFkksZ esa rRoksa dh igpku gsrq lksfM;e fu"d"kZ cukuk iM+rk gS
D;ksafd&
(a) vf/kdka'k dkcZfud rRo rFkk muds ;kSfxd lg la;ksth rFkk vfoys; gks
tkrs gSa
(b) lksfM;e ds leLr ;kSfxd ty esa foys; vkSj fo|qr la;ksth cu tkrs gSa
(c) lksfM;e /kkrq ls fØ;k dj dkcZ /kkfRod ;kSfxd esa cny tkrs gSa
(d) lksfM;e fu"d"kZ ls ijh{k.k vklku cu tkrk gS
For detection of elements in organic compounds sodium extract is to be
prepared because–
(a) Most of the organic elements and compounds become co–valent and
insoluble.
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