Multiple choice question
Multiple choice question Multiple choice question
Explain the trends in properties of Alkali metals on the basis of following points– (a) Density (b) Melting point and boiling point (c) Ionization energy (d) Atomic and ionic radii (e) Colour of ions and their magnetic properties iz'u&15 fyfFk;e vius lewg dh {kkj /kkrqvksa ls fdu xq.kks esa fHkUurk j[krh rFkk lg fod.kZ laca/k j[kus okyh Mg /kkrq ls fdu xq.kksa esa lekurk j[krh gS\ :Li differs on what grounds with other members of its groups? Also mention similarities with its diagonally related Mg metal. iz'u&16 {kkjh; e`nk /kkrqvksa ds xq.kksa esa vkorZrk fuEu xq.kksa ds vk/kkj ij nsa& (a) ?kuRo (b) DoFkukad ,oa xyukad (c) vkWDlhdj.k voLFkk (d) /ku fo|qrh y{k.k Explain trends in properties of Alkaline earth metals on the following points– (a) Density (b) Boiling point and melting point (c) Oxidation state (d) Electro (+)ve character iz'u&17 BeCl ds cukus dh fof/k ,oa bldh la;ksth iz—fr dkj.k lfgr nhft;s\ 2 bldh Ja[kyk lajpuk ,oa f}yd lajpuk fp= d lgk;rk ls le>kb;s\ Give the method of preperation of BeCl 2 ? Give its valency nature with reason? also give its chain structure and dimer form diagramatically? iz'u&18 lksfM;e dkcksZusV dh vkS|ksfxd mRiknu dh yh-CykWd fof/k dks la{ksi esa le>kb;s rFkk gksus okyh jklk;fud fØ;kvksa ds lehdj.k nhft;s\ Describe in brief the Le–blane process for manufacturing Na 2 CO 3 and give chemical equations for the reactions taking place. iz'u&19 Na CO dh lksMk veksfu;k¡ lkYos fof/k dk lfp= o.kZu dhft;s\ blds 2 3 fofHkUu Hkkxksa esa gksus okyh jklk;fud fØ;kvksa ds lehdj.k Hkh nhft;s\ 64
Give labelled diagram for soda amonia solvay method of NaCO 3 preperation. Give chemical reactions taking place in different parts of it? iz'u&20 lksMk veksfu;k¡ lkYos fof/k }kjk Na 2 CO 3 rks izkIr fd;k tk ldrk gS] fdUrq K 2 CO 3 izkIr ugh fd;k tk ldrk bldk dkj.k nhft;s\ Na 2 CO 3 can be obtained by soda ammonia solvay process but K 2 CO 3 can not be prepared by this method, give its reason? iz'u&21 NaOH ds mRiknu gsrq dkLVuj&dsyuj lsy dk LoPN ukekafdr fp= ,oa lSy esa gksus okyh jklk;fud vfHkfØ;k,sa n'kkZb;s\ Give chemical reactions and diagram of Castner–Kellner cell for production of NaOH. iz'u&22 NaOH fuekZ.k dh uSYlu lSy dk LoPN ukekafdr fp= cukb;s rFkk gksus okyh jklk;fud fØ;k Hkh n'kkZb;s\ Draw labelled diagram of Nelson Cell for preparing NaOH and give chemical reactions also? iz'u&23 NaOH dh fuEu ls jklk;fud fØ;k ds dsoy jklk;fud lehdj.k nsa\ (a) QkLQksjl ls fØ;k (b) lYQj ls fØ;k (c) cksjku ,oa flyhdkWu ls fØ;k (d) Cl 2 rFkk I 2 ls fØ;k Give only chemical reactions of NaOH with the following– (a) With phosphorous (b) With sulphur (c) With borone and silicon (d) with Cl 2 and I 2 iz'u&24 NaOH dh fuEu /kkrq yo.kksa ds lkFk gksus okyh jklk;fud fØ;k ds lehdj.k nhft;s\ Give only chemical reactions of the following compounds with NaOH (a) FeCl 3 (b) CuSO 4 (c) AgNO 3 (d) HgCl 2 65
- Page 13 and 14: iz'u&37 fdlh rRo dk ijek.kq Øekad
- Page 15 and 16: The increasing order of size will b
- Page 17 and 18: 22 Li ,oa Mg rFkk Be vkSj Al ds xq.
- Page 19 and 20: iz'u&35 fdlh vkorZ esa rFkk lewg es
- Page 21 and 22: c
- Page 23 and 24: 19 vk/kqfud vkorZ lkfj.kh fuEu esa
- Page 25 and 26: iz'u&31 gkbMªkstu cU/k ds dkj.k ;k
- Page 27 and 28: 2 O rFkk H dk ?kuRo vuqikr 16:1 gS
- Page 29 and 30: Evaporation of water should come un
- Page 31 and 32: iz'u&27 ,oksxsMªks fu;e dks ifjHkk
- Page 33 and 34: iz'u&42 ije 'kwU;] ije rki ,oa NTP
- Page 35 and 36: 8 mRØe.kh; vfHkfØ;k ds fy;s lkE;
- Page 37 and 38: fjDr fjDr fjDr LFkkuksa LFkkuksa dh
- Page 39 and 40: In measuring �U and �H for calc
- Page 41 and 42: If �H f ° = 3400 cal/mol, then c
- Page 43 and 44: cgqfodYih; cgqfodYih; iz'uA iz'uA b
- Page 45 and 46: 12 Kc dh bdkbZ gS& (a) ¼eksy izfr
- Page 47 and 48: 22 mRØe.kh; jklk;fud vfHkfØ;kvksa
- Page 49 and 50: Differentiate among concept of acid
- Page 51 and 52: In oxidation state there is- (a) Ga
- Page 53 and 54: In the froth floating process parti
- Page 55 and 56: iz'u&7 fo|qr jklk;fud lSy dk ukekaf
- Page 57 and 58: iz'u&19 xkayd fdl dgrs gS\ bldk pqu
- Page 59 and 60: 5 H 2 O, H 2 S, H 2 Se rFkk H 2 Te
- Page 61 and 62: Explain the structure of H 2 O 2 wi
- Page 63: (b) Na 2 SO 4 dh ty;kstu ÅtkZ tkyd
- Page 67 and 68: iz'u&31 f}rh; lewg ds rRoks dks {kk
- Page 69 and 70: fjDr fjDr LFkkuks LFkkuks dh dh iwf
- Page 71 and 72: In any group atomic mass increase g
- Page 73 and 74: Describe electrolytic method for ge
- Page 75 and 76: In elements of group-14, on coming
- Page 77 and 78: 4 4 4 ,oa ,oa ,oa 5 5 5 vad vad oky
- Page 79 and 80: 2 ftu nzo inkFkksZ ds DoFkukad fHkU
- Page 81 and 82: 8 isij ØksesVksxzkQh }kjk jaxks dk
- Page 83 and 84: 16 dsfj;l uyh esa CH 2 ClCOOH dks l
- Page 85 and 86: 4 4 4 ,oa ,oa ,oa 5 5 5 vad vad oky
- Page 87 and 88: iz'u&43 fuEu dks izsj.k izHkko ds v
- Page 89 and 90: 4 C H O ds }kjk fdru izdkj ds vYdks
- Page 91 and 92: iz'u&14 esØksekWyhD;wy D;k gksrs g
- Page 93 and 94: (c) vkblksizhu ls ikWyhvkblksizhu (
- Page 95 and 96: Pollutants are said- (a) CO 2 , SO
- Page 97 and 98: 5 cgqydksa ds izdkjksa esa ls dkSu&
- Page 99: 18 FkSfyd ,flM dk jklk;fud lw= ----
Explain the trends in properties of Alkali metals on the basis of following<br />
points–<br />
(a) Density (b) Melting point and boiling point<br />
(c) Ionization energy (d) Atomic and ionic radii<br />
(e) Colour of ions and their magnetic properties<br />
iz'u&15 fyfFk;e vius lewg dh {kkj /kkrqvksa ls fdu xq.kks esa fHkUurk j[krh rFkk lg<br />
fod.kZ laca/k j[kus okyh Mg /kkrq ls fdu xq.kksa esa lekurk j[krh gS\<br />
:Li differs on what grounds with other members of its groups? Also mention<br />
similarities with its diagonally related Mg metal.<br />
iz'u&16 {kkjh; e`nk /kkrqvksa ds xq.kksa esa vkorZrk fuEu xq.kksa ds vk/kkj ij nsa&<br />
(a) ?kuRo (b) DoFkukad ,oa xyukad<br />
(c) vkWDlhdj.k voLFkk (d) /ku fo|qrh y{k.k<br />
Explain trends in properties of Alkaline earth metals on the following points–<br />
(a) Density (b) Boiling point and melting point<br />
(c) Oxidation state (d) Electro (+)ve character<br />
iz'u&17 BeCl ds cukus dh fof/k ,oa bldh la;ksth iz—fr dkj.k lfgr nhft;s\<br />
2<br />
bldh Ja[kyk lajpuk ,oa f}yd lajpuk fp= d lgk;rk ls le>kb;s\<br />
Give the method of preperation of BeCl 2 ? Give its valency nature with reason?<br />
also give its chain structure and dimer form diagramatically?<br />
iz'u&18 lksfM;e dkcksZusV dh vkS|ksfxd mRiknu dh yh-CykWd fof/k dks la{ksi esa<br />
le>kb;s rFkk gksus okyh jklk;fud fØ;kvksa ds lehdj.k nhft;s\<br />
Describe in brief the Le–blane process for manufacturing Na 2 CO 3 and give<br />
chemical equations for the reactions taking place.<br />
iz'u&19 Na CO dh lksMk veksfu;k¡ lkYos fof/k dk lfp= o.kZu dhft;s\ blds<br />
2 3<br />
fofHkUu Hkkxksa esa gksus okyh jklk;fud fØ;kvksa ds lehdj.k Hkh nhft;s\<br />
64
Change language