Title 3. Chemistry 1st Paper With Solve FRB-02.03.24.pdf ✅

†g.‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb  Final Revision Batch 1 †g.‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb Periodic Properties and Bonding in Elements Z...Zxq Aa ̈vq Topicwise Board CQ Analysis eûwbe©vPwb cÖkœ UwcK 2018 2019 2021 2022 2023 †gvU eøK †g.jmg~n I G‡`i ag©vewj 3 2 3 6 5 19 †g.‡ji ch©ve„Ë ag© Ñ 8 13 9 8 38 ivmvqwbK eÜb (AvqwbK, mg‡hvRx, mwbœ‡ek eÜb) 1 4 5 6 4 20 msKivqb, †h.‡Mi AvK...wZ I eÜb †KvY 1 3 11 11 8 34 †cvjvwiwU, †cvjvivqb, dvRv‡bi bxwZ Ñ 5 6 3 2 16 nvB‡Wav‡Rb eÜb, f ̈vÛviIqvjm eÜb Ñ 2 3 3 5 13 RwUj †h.‡Mi bvgKiY, msKiY 1 1 3 7 5 17 m„Rbkxj cÖkœ UwcK 2018 2019 2021 2022 2023 †gvU eøK †g.jmg~n I G‡`i ag©vewj 2 4 3 5 6 20 †g.‡ji ch©ve„Ë ag© 2 6 9 8 9 34 ivmvqwbK eÜb (AvqwbK, mg‡hvRx, mwbœ‡ek eÜb) Ñ Ñ 3 1 3 7 msKivqb, †h.‡Mi AvK...wZ I eÜb †KvY 2 5 14 9 12 42 †cvjvwiwU, †cvjvivqb, dvRv‡bi bxwZ 2 4 3 3 4 16 nvB‡Wav‡Rb eÜb, f ̈vÛviIqvjm eÜb 2 3 4 6 3 18 RwUj †h.‡Mi bvgKiY, msKiY Ñ 2 1 2 3 8 * we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n eøK †g.jmg~n I G‡`i ag©vewj 1. †Kvb †g.j †Rvov ch©vq mviwYi GKB ch©vqfy3? [Xv. †ev. 23; w`. †ev. 23] Li, Na Mn, Fe Ar, Rn Al, Ga DËi: Mn, Fe e ̈vL ̈v: Mn(25)  1s2 2s2 2p6 3s2 3p6 3d5 4s2 ; ch©vq-4 Fe(26)  1s2 2s2 2p6 3s2 3p6 3d6 4s2 ; ch©vq-4 2. wb‡Pi †KvbwU g„rÿvi †g.j? [Xv. †ev. 23; P. †ev. 23] Ca Na Si P DËi: Ca e ̈vL ̈v: MÖæc-2 Gi †g.jmg~n‡K g„rÿvi avZz ejv nq| Ca(20)  1s2 2s2 2p6 3s2 3p6 4s2 ; MÖæc-2 myZivs, K ̈vjwmqvg (Ca) GKwU g„rÿvi †g.j| 3. p-eøK †g.‡ji msL ̈v KqwU? [P. †ev. 23; iv. †ev. 23] 14 27 36 41 DËi: 36 e ̈vL ̈v: s-eøK †g.j 14 wU ; d-eøK †g.j 41 wU ; p-eøK †g.j 36 wU f-eøK 27 wU 4. ch©vq mviwY‡Z †Kvb eø‡K AavZzi msL ̈v †ewk? [iv. †ev. 23] s p d f DËi: p e ̈vL ̈v: s I d eø‡K avZzi msL ̈v †ewk| ch©vq mviwY‡Z we` ̈gvb 6wU AavZz (B, Si, Ge, As, Sb, Te) p-eø‡K Aew ̄ Z| 5. wb‡Pi †KvbwU iwOb †h.M? [Kz. †ev. 23] ScCl3 MgCl2 Cu2Cl2 CoCl2 DËi: CoCl2 e ̈vL ̈v: Ae ̄ všÍi avZzi AwaKvsk †h.MB KwVb Ae ̄ vq ev `ae‡Y iwOb nq| KviY Ae ̄ všÍi avZzi Avqb ̧‡jvi d Dckw3 ̄Íi Am¤ú~Y© _v‡K| Z‡e †hmKj Ae ̄ všÍi avZzi Avq‡b d-AiweUvj k~b ̈ _v‡K, †hmKj avZz mg~n eY©nxb †h.M MVb K‡i| myZivs CoCl2 GKwU iwOb †h.M|

†g.‡ji ch©vqe„Ë ag© I ivmvqwbK eÜb  Final Revision Batch 3 18. iwOb †h.M †KvbwU? [iv. †ev. 22; h. †ev. 22] TiCl4 MnO2 ScCl3 ZnSO4 DËi: MnO2 e ̈vL ̈v: †h.M ̧‡jvi †K›`axq cigvYyi B‡jKUab web ̈vm wb¤œiƒc: Ti(22)  [Ar]3d2 4s2 ; Ti4+  [Ar]3d0 4s0 Sc(21)  [Ar] 3d1 4s2 ; Sc3+  [Ar] 3d0 4s0 Mn(25)  [Ar] 3d5 4s2 ; Mn2+  [Ar] 3d5 Zn(30)  [Ar] 3d10 4s2 ; Zn2+  [Ar] 3d10 w ̄ wZkxj Ae ̄ vq Mn Gi d AiweUv‡j 5wU B‡jKUab A_©vr B‡jKUabxq KvVv‡gv Am¤ú~Y© _vKvq GwU Ae ̄ všÍi †g.j| Ae ̄ všÍi †g.j ̧‡jvi kw3 ͇̄ii cv_©K ̈ _vKvq wbw`©ó e‡Y©i Av‡jv cÖwZdwjZ K‡i e‡j iwOb †h.M MwVZ nq| 19. wb‡Pi †Kvb †g.jwU e ̈wZμgx B‡jKUab web ̈vm †`Lvq? [iv. †ev. 22; h. †ev. 22] Zn Fe Cu Pb DËi: Cu e ̈vL ̈v: Cu(29) = 1s2 2s2 2p6 3s2 3p6 3d10 4s1 c~Y© d AiweUvj (3d10) AwaK w ̄ wZkxj nIqvq 4s AiweUvj n‡Z 1wU B‡jKUab 3d AiweUv‡j cÖ‡ek K‡i| 20. ch©vq mviwYi †Kvb †kÖwYi †g.jmg~n gy`avavZz bv‡g cwiwPZ? [h. †ev. 22] 11 12 16 17 DËi: 11 e ̈vL ̈v: MÖæc 11 Gi Cu, Ag, Au †K gy`av avZz e‡j| cÖvPxbKv‡j G ̧‡jv avZe gy`av wn‡m‡e †jb‡`‡b e ̈envi n‡Zv| 21. me©v‡cÿv kw3kvjx ÿvi †KvbwU? [P. †ev. 22] NaOH KOH CsOH RbOH DËi: NaOH e ̈vL ̈v: GKB MÖæ‡ci Dci †_‡K wb‡P †M‡j ÿviKZ¡ n«vm cvq| Na, K, Rb, Cs GKB MÖæ‡ci Dci wb‡P nIqvq NaOH kw3kvjx ÿvi| 22. ch©vq mviwY‡Z Cu Gi Ae ̄’vb †Kvb †kÖwY‡Z? [wm. †ev. 22] 10 13 11 12 DËi: 11 e ̈vL ̈v: Kcv‡ii B‡jKUab web ̈vm wb¤œiƒc: Cu(29)  [Ar] 3d10 4s1 MÖæc b¤^i = (10 + 1) = 11 23. †KvbwU Dfag©x A·vBW? [g. †ev. 22] Li2O BeO CO2 Na2O DËi: BeO e ̈vL ̈v: Na2O cvwbi mv‡_ wewμqv K‡i Zxea ÿvi NaOH Drcbœ K‡i| ZvB GwU ÿviag©x| Na2O + H2O  2NaOH Li2O I ÿviag©x| CO2 A¤øag©x| wKš‧ BeO GwmW I ÿvi Df‡qi mv‡_ wewμqv K‡i ZvB GwU Dfag©x A·vBW| 24. M2+ [(n –1 )d6 , (n = 4)], M †g.j •ewkó n‡jv- [Xv. †ev. 22] (i) cÖfveK wnmv‡e KvR K‡i (ii) `ywU n ̈vjvBW †h.M MVb K‡i (iii) Wvqvg ̈vM‡bwUK ag© cÖ`k©b K‡i wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii DËi: i I ii e ̈vL ̈v: n = 4 n‡j M 2+ = 3d6 A_©vr †g.jwU Fe2+| M †g.jwU Ae ̄ všÍi †g.j nIqvq GwUi cÖfveb ÿgZv Av‡Q| Fe n ̈vjvBW A_©vr †K¬vwi‡bi mv‡_ wewμqv K‡i FeCl2 Ges FeCl3 MVb Ki‡Z cv‡i myZivs Fe cwieZ©kxj †hvR ̈Zv cÖ`k©b K‡i| d AiweUv‡ji B‡jKUab web ̈vm: ⇃↾ ⇃ ⇃ ⇃ ⇃ d AiweUv‡j 4 wU AhyM¥ B‡jKUab _vKvq GwU †P.¤^K‡ÿÎ Øviv Lye cÖKUfv‡e AvKwl©Z nIqvq GwU c ̈vivg ̈vM‡bwUK ag© cÖ`k© Ki‡e| 25. wb‡Pi †Kvb †h.‡Mi ÿvixq g~j‡Ki d-AiweUv‡j B‡jKUab Av‡Q? [Kz. †ev. 21] ScCl3 TiCl4 CrSO4 CaSO4 DËi: CrSO4 e ̈vL ̈v: †h.M ̧‡jv K ̈vUvqb ev ÿvixq g~jK h_vμ‡g Sc3+ , Ti4+, Cr2+, Ca2+ 24Cr2+  [Ar] 3d4 21Sc3+  [Ar] 4s0 3d0 22Ti4+  [Ar] 4s0 3d0 20Ca2+  [Ar] 4s0 3d0 26. †KvbwU iwOb †h.M? [Kz. †ev. 21] NiSO4 Al2(SO4)3 ZnSO4 Sc2(SO4)3 DËi: NiSO4 e ̈vL ̈v: Ae ̄ všÍi †g.jmg~n iwOb †h.M MVb K‡i| Ni Ae ̄ všÍi †g.j| 27. wb‡Pi †KvbwU AwfRvZ M ̈vm? [e. †ev. 21] H2 N2 F2 Xe DËi: Xe e ̈vL ̈v: ch©v‡q mviwYi 18 bs MÖæc Gi †g.jmg~n‡K (He, Ne, Ar, Kr, Xe, Rn) wbw®...q M ̈vm ev †bv‡ej M ̈vm e‡j| G‡`i AwfRvZ M ̈vmI ejv nq|