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iz'u&10 BeH 2 dh lajpuk cgqyh—r v.kq ds :i esa n'kkZb;s\ Give the structure of Berelium hydried as a polymerised molecule? iz'u&11 H O ds v.kq esa fdl izdkj dk ladj.k ik;k tkrk gS\ blds nks cU/kksa ds chp 2 dks.k dk eku rFkk blds cuus dk dkj.k crykb;s\ What type of hybridization is found in H 2 O molecule? Give the value of angle between the two bons and the reason for this angle? iz'u&12 ty dh LFkkbZ dBksjrk fdu yo.kksa ds ty esa ?kqys gksus ds dkj.k gksrh gS\ jklk;fud fof/k ls bl dBksj ty dks e`nq djus gsrq fdu jklk;fud inkFkksZ dk iz;ksx fd;k tk ldrk gS\ budh bu inkFkksZ ls jklk;fud fØ;k n'kkZb;s\ Permanent hardness of water is due to what type of salts disolution in it? What chemical substances can be used to remove this hardness, give chemical reactions with these chemicals. iz'u&13 ft;ksykbV D;k gS\ ft;ksykbV vkSj ijE;wfVv inkFkksZa esa D;k varj gS\ ft;ksykbV ls dBksj ty ds yo.kksa dh fØ;k dks lehdj.k }kjk O;Dr dhft;s\ What are Zedites? Is there any difference between permutit and zeolite? Give chemical reaction of zeolite with salts dissolved in hard water? iz'u&14 gkbMªkstu ijvkWDlkbM ds lkUnz.k dh fLFkfr;k¡ dkSu lh gSa\ bls Bksl :i esa dSls izkIr fd;k tk ldrk gS\ blds vi?kVu dks jksdus ds fy;s D;k lko/kkuh ysuh gksrh gS\ How H 2 O 2 is concentrated? How can H 2 O 2 crystals be obtained? What measures are to be taken to check its decomposition? iz'u&15 gkbMªkstu ijvkWDlkbM dh lajpuk dk fp= }kjk izn'kZu dhft;s\ H O dk 2 2 ijh{k.k djus gsrq dksbZ 2 izfof/k;k¡ nhft;s\ 60
Explain the structure of H 2 O 2 with the help of figure? Give any two tests for H 2 O 2 cgqfodYih; cgqfodYih; iz'uA iz'uA bdkbZ&10 bdkbZ&10 ¼s-CykWd CykWd rRo] rRo] lewg lewg 1 1 o o 2 2 ds ds rRo½ rRo½ rRo½ (Elements of s–block) cgqfodYih; iz'uA Multiple choice question 1 1 vad vad okys okys okys iz'u iz'u 1 {kkjh; e`nk /kkrqvks dk dkSu lk xq.k ijek.kq Øekad c
Page 1 and 2:
ikB~;Øe ikB~;Øe jlk;u jlk;u 'kkL=
Page 3 and 4:
5 fLFkj vuqikr fu;e ds LFkkid Fks&
Page 5 and 6:
17 6.023 x 1023 fdlh Hkh nzO; ds ,d
Page 7 and 8:
cgqfodYih; cgqfodYih; iz'uA iz'uA b
Page 9 and 10: According to Aufbau principle elect
Page 11 and 12: 18 Cr rRo dk bySDVªkfud foU;kl ---
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: 5 H 2 O, H 2 S, H 2 Se rFkk H 2 Te
Page 63 and 64: (b) Na 2 SO 4 dh ty;kstu ÅtkZ tkyd
Page 65 and 66: Give labelled diagram for soda amon
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= ----
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