Tiêu đề P2-C4-FRB-Practice-Sheet-With-Solve.pdf ✅

Zwor imvqb  Final Revision Batch 1 Zwor imvqb Electro Chemistry PZz_© Aa ̈vq Topicwise Board Analysis eûwbe©vPwb cÖkœ UwcK 2017 2018 2019 2021 2022 2023 †gvU Zwor we‡kø‡l ̈i cwievwnZv 1 Ñ 1 3 6 3 14 Zwor we‡køl ̈ †Kvl, Zwor ivmvqwbK †Kvl 6 1 5 11 11 9 43 d ̈viv‡Wi m~Î 3 1 8 13 17 8 50 †Kvl wefe 3 Ñ 5 9 5 6 28 bvb©÷ mgxKiY Ñ Ñ 1 Ñ Ñ 1 2 m„Rbkxj cÖkœ UwcK 2017 2018 2019 2021 2022 2023 †gvU Zwor we‡kø‡l ̈i cwievwnZv Ñ Ñ Ñ Ñ Ñ Ñ Ñ Zwor we‡køl ̈ †Kvl, Zwor ivmvqwbK †Kvl 3 Ñ Ñ 3 Ñ Ñ 6 d ̈viv‡Wi m~Î 3 Ñ 3 7 4 10 27 †Kvl wefe 10 2 9 8 9 14 52 bvb©÷ mgxKiY 3 Ñ 2 6 6 6 23 *we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ enywbev©Pwb cÖkœmg~n Zwor we‡kø‡l ̈i cwievwnZv 1. †KvbwUi Zwor cwievwnZv AwaK? [Xv. †ev. 23] Be Al Cu Sc DËi: Cu e ̈vL ̈v: cÖ`Ë †gŠjmg~‡ni g‡a ̈ Kcvi (Cu) Gi me©‡kl kw3 ͇̄i GKwU B‡jKUab i‡q‡Q; hv avZzi ùwUK Rvwji g‡a ̈ webv evavq gy3fv‡e PjvPj Ki‡Z cv‡i| GB gy3 B‡jKUabB Kcvi‡K GKwU DËg we`y ̈r cwievnx K‡i †Zv‡j| 2. B‡jKUabxq Zwor cwievnx †KvbwU? [e. †ev. 23] CuSO4 `aeY FeSO4 `aeY Fe Fe2(SO4)3 `aeY DËi: Fe e ̈vL ̈v: B‡jKUabxq/avZe cwievnx: Zvgv (Cu), A ̈vjywgwbqvg (Al), †jvnv (Fe), ` ̄Ív (Zn) mn mKj avZz| GLv‡b, Fe Gi me©ewnt ̄’ Kÿc‡_i gy3 B‡jKUab ̧‡jv Zwor cÖev‡ni m„wó K‡i| FeSO4, NaCl, CuSO4 `aeY B‡jK‡UavjvBwUK cwievnx 3. Av‡cwÿK cwievwnZvi GKK †KvbwU? [e. †ev. 23] wK‡jvRyj Ing –1 †mwg–1 Ing–1 †mwg–1 DËi: Ing–1 †mwg–1 e ̈vL ̈v: Av‡cwÿK cwievwnZv, K = L × l A CGS c×wZ‡Z Av‡cwÿK cwievwnZv, K Gi GKK: 1 R × l A = 1 †iv‡ai GKK × •`‡N© ̈i GKK †ÿÎd‡ji GKK = 1 Ing × †mwg (†mwg) 2 = Ing–1 †mwg–1 (ohm–1 cm–1 ) SI GK‡K: wm‡gÝ × wgUvi (wgUvi) 2 = Sm–1 4. my‡μv‡Ri `aeYwU- [Xv. †ev. 23] Zwor we‡køl ̈ Zwor Awe‡køl ̈ B‡jKUabxq cwievnx AavZe cwievnx DËi: Zwor Awe‡køl ̈ e ̈vL ̈: †hme †hŠM cvwb‡Z AvqwbZ nq bv, ZvB Zwor cwienb Ki‡Z cv‡i bv Zv‡`i‡K Zwor Awe‡køl ̈ c`v_© e‡j| †hgb: wPwb ev my‡μv‡Ri `aeY, A ̈vj‡Kvnj, Zij nvB‡WavKve©bmg~n BZ ̈vw`|
2  HSC Chemistry 2nd Paper Chapter-4 5. †mwgKÛv±i wn‡m‡e e ̈eüZ nq- [Kz. †ev. 22; g. †ev. 22] Ge Zn Cu Al DËi: Ge e ̈vL ̈v: Aa©cwievnx (Semiconductor): Zwor cwievnx I Zwor Acwievnx G `y‡qi gvSvgvwS cwievwnZv ̧Ym¤úbœ wKQz c`v_© Av‡Q| G‡`i‡K Aa©cwievnx ev †mwgKÛv±i ejv nq| †hgb: wmwjKb (Si), Rv‡g©wbqvg (Ge)| 6. wb‡Pi †KvbwU we`y ̈r mycwievnx bq? [P. †ev. 22] Kcvi Kve©b wmjfvi A ̈vjywgwbqvg DËi: Kve©b e ̈vL ̈v: 1. Zwor mycwievnx (Good conductor): G RvZxq gva ̈‡gi †fZi w`‡q Lye mn‡RB B‡jKUab cÖevwnZ n‡q _v‡K| †hgb: Zvgv, A ̈vjywgwbqvg, †jvnv, ` ̄Ívmn mKj avZz, GwmW wgwkÖZ cvwb, ÿvi `aeY, je‡Yi `aeY BZ ̈vw` 2. Zwor Kzcwievnx ev Aa©cwievnx (Bad conductor): G RvZxq gva ̈‡g B‡jKUa‡bi cÖevn N‡U, Z‡e LyeB ̄^í gvÎvq| †hgb: MÖvdvBU, Kve©b, weï× cvwb| 3. Zwor Acwievnx (Non conductor): G RvZxq gva ̈‡gi g‡a ̈ w`‡q B‡jKUab Av‡`Š PvjvPj Ki‡Z cv‡i bv| †hgb: KvP, ievi, Kve©b, †c‡Uavj, wPwb, ïKbv †Udjb, gvBKv, A ̈v‡evbvBU, †cv‡m©wjb, ïKbv KvMR BZ ̈vw`| 7. †KvbwU `ye©j Zwor we‡køl ̈? [wm. †ev. 22] NH4OH NaOH H2SO4 HNO3 DËi: NH4OH e ̈vL ̈v: `yej© Zworwe‡køl ̈ Rjxq `ae‡Y Lye Kg cwigv‡Y (1 – 10 AvqwbZ nq| †hgb: 0.1 M CH3COOH, HF `aeY, NH4OH `aeY, H3PO4 `aeY BZ ̈vw`| 8. cwievwnZvi GKK n‡jv- [Xv. †ev. 22] i. mho ii. ohm–1 iii. Siemens wb‡Pi †KvbwU mwVK? i, ii i, iii ii, iii i, ii, iii DËi: i, ii, iii e ̈vL ̈v: Zwor cwievwnZvi GKK = 1 †iv‡ai GKK = 1 ohm SI c×wZ‡Z Zwor cwievwnZvi GKK wm‡gÝ (siemens) CGS c×wZ‡Z Zwor cwievwnZvi GKK = ohm–1 ev mho| 9. MwjZ NaCl Gi Zwor cwievwnZvi KviY Kx? [Xv. †ev. 19] gy3 B‡jKUab gy3 cigvYy gy3 Avqb gy3 AYy DËi: gy3 Avqb e ̈vL ̈v: MwjZ NaCl G Na+ Ges Cl – Avqb _v‡K| GKwU cv‡Î MwjZ NaCl wb‡q `ywU B‡jK‡Uav‡Wi gva ̈‡g evwni †_‡K Zwor cÖevwnZ Ki‡j Na+ Avqb K ̈v‡_vW †_‡K GKwU B‡jKUab MÖnY K‡i Na avZz‡Z cwiYZ nq| Aciw`‡K Cl – Avqb A ̈v‡bv‡W B‡jKUab Z ̈vM K‡i Cl2 M ̈vm wn‡m‡e gy3 nq| Gfv‡e gy3 Avqb Øviv MwjZ NaCl G Zwor cÖevwnZ nq| 10. K ̈v‡jv‡g‡j †Kvb avZz _v‡K? [P. †ev. 19] Zvgv ` ̄Ív wb‡Kj cvi` DËi: cvi` Zwor we‡køl ̈ †Kvl, Zwor ivmvqwbK †Kvl 11. †KvbwUi RviY wefe me‡P‡q Kg? [iv. †ev. 23] Kcvi †Mvì nvB‡Wav‡Rb wjw_qvg DËi: †Mvì e ̈vL ̈v: G‡`i g‡a ̈ †Mv‡ìi mwμqZv me‡P‡q Kg nIqvq Gi RviY wefe me‡Pq Kg| †gŠj RviY wefe Li + 3.04 V H 0.00 V Cu – 0.34 V Au – 1.56 V 12. Zwor we‡kølY Kv‡j †Kvb AvqbwU cÖ_‡g PvR©gy3 n‡e? [Kz. †ev. 23] Br– NO– 3 OH– Cl – DËi: OH– e ̈vL ̈v: Zwor ivmvqwbK mvwii wb‡Pi w`‡K Avqbmg~‡ni PvR©gy3 nIqvi cÖeYZv μgvš^‡q ev‡o| A ̈vbvqbmg~‡ni mwμqZvi †ÿ‡Î: NO– 3 > SO2– 3 > Cl – > Br– > I– > OH– †h‡nZz OH– AvqbwU A ̈vbvq‡bi μ‡g me‡P‡q wb‡P Ae ̄’vb Ki‡Q, †m‡nZz GwU mevi cÖ_‡g PvR©gy3 n‡e| 13. Zwor we‡kølY Kv‡j †KvbwU `aeY †_‡K Av‡M PvR©gy3 n‡e? [wm. †ev. 23] Sn2+ Cu2+ Ag+ Au3+ DËi: Au3+ e ̈vL ̈v: Zwor ivmvqwbK mvwii wb‡Pi w`‡K Avqbmg~‡ni PvR©gy3 nIqvi cÖeYZv μgvš^‡q ev‡o| K ̈vUvqbmg~‡ni mwμqZvi †ÿ‡Î: K + > Ca2+ > Na+ > Mg2+ > Al 3+ > Mn2+ > Zn2+ > Fe2+ > Sn2+ > Pb2+ > H+ > Cu2+ > Ag+ > Au3+
Zwor imvqb  Final Revision Batch 3 14. GKB gvÎvi we`y ̈r GKB mgq Pvjbv Ki‡j †Kvb AvqbwU K ̈v‡_v‡W †ewk Rgv n‡e? [P. †ev. 23] Cu2+ Fe3+ Ag+ Na+ DËi: Ag+ e ̈vL ̈v: †h avZzi weRviY wefe hZ †ewk, †m avZz ZZ Av‡M B‡jKUab MÖnY K‡i PvR©gy3 n‡e Ges K ̈v‡_v‡W Rgv n‡e| †gŠj weRviY wefe Na – 2.71 V Fe – 0.44 V Cu + 0.34 V Ag + 0.8 V Ag Gi weRviY wefe me‡P‡q †ewk weavq GKB gvÎvi we`y ̈r GKB mgq Pvjbv Ki‡j GwU mevi Av‡M B‡jKUab MÖnY K‡i PvR© gy3 n‡e Ges K ̈v‡_v‡W †ewk Rgv n‡e| 15. †Kvb †gŠjwU GwmW †_‡K nvB‡Wav‡Rb cÖwZ ̄’vcb Ki‡Z cvi‡e? [wm. †ev. 23] Ni Bi Hg Pt DËi: Ni e ̈vL ̈v: cÖ`Ë †gŠj ̧‡jvi mwμqZv wmwi‡R μg: Ni > Bi > Hg > Pt †gŠj PviwUi g‡a ̈ wb‡Kj (Ni) Zzjbvg~jK mwμq avZz nIqvq Ges mwμqZvi wmwi‡R Aci wZbwU †gŠj A‡cÿv Dc‡i Ae ̄’vb Kivq GwU GwmW †_‡K Lye mn‡RB nvB‡Wav‡Rb cÖwZ ̄’vcb Ki‡Z cv‡i| 16. K ̈v‡jv‡gj ZworØv‡i †KvbwU e ̈eüZ nq? [wm. †ev. 23] Hg2Cl2 HgCl2 AgCl NH4Cl DËi: Hg2Cl2 e ̈vL ̈v: cÖgvY K ̈v‡jv‡gj ZworØv‡ii cv‡k GKwU miæ bjmn GKwU PIov b‡j wKQz cwigvY cvi` wb‡q Zvi Dc‡i KwVb gviwKDivm †K¬vivBW (Hg2Cl2) jeY ev K ̈v‡jv‡gj †bqv nq| K ̈v‡jv‡gj ZworØvi: Pt, Hg/Hg2Cl2(s)/KCl(aq) 17. wb‡Pi †KvbwU jNy H2SO4 †_‡K nvB‡Wav‡Rb wegy3 Ki‡Z cv‡i? [g. †ev. 23] Pb Hg Cu Ca DËi: Ca e ̈vL ̈v: cÖ`Ë †gŠj ̧‡jvi mwμqZv wmwi‡Ri μg: Ca > Pb > Cu > Hg †gŠj PviwUi g‡a ̈ K ̈vjwmqvg (Ca) Lye mwμq avZz nIqvq Ges mwμqZv wmwi‡Ri nvB‡Wav‡Rb A‡cÿv †ek Dc‡i Ae ̄’vb Kivq GwU jNyH2SO4 †_‡K Lye mn‡RB nvB‡Wav‡Rb wegy3 Ki‡Z cv‡i| Ca + H2SO4  CaSO4 + H2(g) 18. Zwor ivmvqwbK †Kv‡l- [Kz. †ev. 23] i. ivmvqwbK kw3 Zwor kw3‡Z cwiYZ nq ii. A ̈v‡bvW abvZ¥K nq iii. A ̈v‡bvW n‡Z gy3 B‡jKUab eZ©bx‡Z cÖevwnZ nq wb‡Pi †KvbwU mwVK i, ii ii, iii i, iii i, ii, iii DËi: i, iii e ̈vL ̈v: Zwor we‡køl ̈ †Kv‡l A ̈v‡bvW abvZ¥K nq| Avi Zwor ivmvqwbK †Kv‡l A ̈v‡bvW FYvZ¥K nq| 19. †Kvb AvqbwU K ̈v‡_v‡W mevi Av‡M PvR©gy3 n‡e? [Xv. †ev. 22] Ni2+ Cu2+ Zn2+ Na+ DËi: Cu2+ e ̈vL ̈v: Zwor ivmvqwbK mvwi‡Z Dci †_‡K wb‡Pi w`‡K Avqbmg~‡ni PvR©gy3 nIqvq cÖeYZv e„w× cvq| Zwor ivmvqwbK mvwi‡Z Ae ̄’v‡bi μg: Na+ > Zn2+ > Ni2+ > Cu2+ 20. jeY †mZz‡Z wb‡Pi †KvbwUi `aeY e ̈envi Kiv hvq? [iv. †ev. 22] NaCl KNO3 KMnO4 K2CO3 DËi: KNO3 e ̈vL ̈v: Zwor †Kv‡l e ̈eüZ jeY †mZz n‡jv- KCl ev KNO3 ev NH4NO3 ev Na2SO4 Gi 0.1 M NbgvÎvi `aeY fwZ© Dëv‡bv U- AvK...wZi KvPbj| 21. me‡P‡q kw3kvjx weRviK wb‡Pi †KvbwU? [P. †ev. 22; Kz. †ev. 16] Li Al Fe Zn DËi: Li e ̈vL ̈v: avZzi mwμqZv wmwiR Abymv‡i †hme avZz Dc‡ii w`‡K Ae ̄’vb K‡i Zviv kw3kvjx weRviK KviY G‡`i B‡jKUab Z ̈v‡Mi cÖeYZv †ewk| weRvi‡Ki μg: Li > K > Ca > Na > Mg > Al > Zn > Fe > Sn > Pb > H > Cu > Hg > Ag > Pt > Au. 22. eavB‡bi Zwor we‡kølY Ki‡j Kx Drcbœ nq? [wm. †ev. 22] NaCl NaHCO3 NaOH NaClO DËi: NaOH e ̈vL ̈v: eavB‡b †K¬vivBW Avq‡bi NbgvÎv D”P nIqvq †K¬vivBW AvqbB Av‡M B‡jKUab Z ̈vM K‡i A ̈v‡bv‡W PvR©gy3 nq Ges †K¬vivBW M ̈vm wn‡m‡e wbM©Z nq| NaCl  Na+ + Cl – ; 2Cl – – 2e– = Cl2 A ̈v‡bv‡W H2O  H + + OH– ; 2H+ + 2e– = H2 K ̈v‡_v‡W myZivs, †mvwWqvg †K¬vivBW Rjxq `aeY‡K Zworwe‡kølY Ki‡j K ̈v‡_v‡W nvB‡Wav‡Rb M ̈vm, A ̈v‡bv‡W †K¬vwib M ̈vm Drcbœ nq Ges `ae‡Y μgvMZ mwÂZ †mvwWqvg I nvB‡Wavw·j Avq‡bi ms‡hv‡M †mvwWqvg nvB‡Wav·vBW Drcbœ nq|
4  HSC Chemistry 2nd Paper Chapter-4 23. †Kvb †gŠjwU nvB‡Wav‡K¬vwiK GwmW †_‡K nvB‡Wav‡Rb cÖwZ ̄’vcb Ki‡Z cv‡i bv? [wm. †ev. 22] Fe Co Sn Pt DËi: Pt e ̈vL ̈v: mwμqZvi μg: Li > K > Sr > Ca > Na > Mg > Al > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Cu > Hg > Ag > Pt > Au myZivs cÖ`Ë Ack‡b †KejgvÎ Pt mwμqZv wmwi‡R H Gi wb‡P Aew ̄’Z| ZvB Pt, HCl †_‡K H cÖwZ ̄’vcb Ki‡Z cvi‡e bv| 24. Zwor we‡køl‡Y †KvbwU Av‡M PvR©gy3 n‡e? [g. †ev. 22; h. †ev. 16] Cu2+ H + Pb2+ Na+ DËi: Cu2+ e ̈vL ̈v: Zwor ivmvqwbK mvwi‡Z †hme Avq‡bi Ae ̄’vb wb‡Pi w`‡K Zv‡`i PvR©gy3 nIqvq cÖeYZv A‡cÿvK...Z Dc‡ii w`‡Ki Avq‡bi †_‡K †ewk| cÖ`Ë PviwU Avq‡bi Zwor ivmvqwbK mvwi‡Z Ae ̄’vb, Na+ > Pb2+ > H+ > Cu2+ GLv‡b, Cu2+ Gi Ae ̄’vb mevi †k‡l ZvB GwU Av‡M PvR©gy3 n‡e| 25. Zwor we‡køl‡Yi gv‡a ̈‡g Drcv`b Kiv hvq- [iv. †ev. 22] i. Al ii. Na iii. Zn wb‡Pi †KvbwU mwVK? i, ii i, iii ii, iii i, ii, iii DËi: i, ii, iii e ̈vL ̈v: Zwor we‡køl‡Yi wKQz e ̈envi wb‡P D‡jøL Kiv nj| 1. WvDb c×wZ‡Z MwjZ NaCl †_‡K †mvwWqvg avZz wb®‹vkb| 2. gviKvwi K ̈v‡_vW †m‡j NaCl Gi Zwor we‡køl‡Y Kw÷K †mvWv NaOH, H2, †K¬vwib Drcv`b| 3. NaCl Gi Rjxq `ae‡Yi Zwor we‡køl‡Y †mvwWqvg †K¬v‡iU (I), NaClO Drcv`b| 4. MwjZ CaCl2 I MgCl2 Gi Zwor we‡køl‡Y Ca I Mg avZz wb®‹vkb| 5. A ̈vjywgbv ev e·vBU (Al2O3) †_‡K A ̈vjywgwbqvg avZz wb®‹vkb| 6. wRsK mvj‡dU †_‡K wRsK avZz wb®‹vkb| 26. Zwor we‡kølY cÖwμqvq K ̈v‡_v‡W †Kvb ai‡bi wewμqv N‡U? [iv. †ev. 21] weRviY RviY RviY weRviY AcmviY wewμqv DËi: weRviY e ̈vL ̈v: Zwor we‡køl ̈ I Zwor ivmvqwbK †Kvl Df‡qi †ÿ‡ÎB, K ̈v‡_vW  weRviY A ̈v‡bvW  RviY Zwor we‡kølY cÖwμqvq K ̈v‡_v‡W avZe Avqb B‡jKUab MÖnY K‡i| Avi B‡jKUab MÖnY gv‡bB weRviY wewμqv| myZivs K ̈v‡_v‡W weRviY wewμqv NU‡e| 27. †Kvb †gŠjwU HCl GwmW †_‡K H †K cÖwZ ̄’vcb Ki‡Z cv‡i? [Kz. †ev. 21] Cu Sn Hg Ag DËi: Sn e ̈vL ̈v: avZzi mwμqZvi μg: Li > K > Sr > Ca > Na > Mg > Al > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Cu > Hg > Ag > Pt > Au Sn mwμqZv wmwi‡R H Gi Dc‡i Aew ̄’Z| ZvB Sn, HCl †_‡K H cÖwZ ̄’vcb Ki‡Z cvi‡e| 28. Zwor we‡køl‡Y †KvbwU Av‡M PvR©gy3 n‡e? [h. †ev. 21] Pt2+ Cu2+ Cd2+ Mn2+ DËi: Pt2+ e ̈vL ̈v: Zwor ivmvqwbK mvwi‡Z †hme Avq‡bi Ae ̄’vb wb‡Pi w`‡K Zv‡`i PvR©gy3 nIqvi cÖeYZv A‡cÿvK...Z Dc‡ii w`‡Ki Avq‡bi †_‡K †ewk| cÖ`Ë PviwU Avq‡bi Zwor ivmvqwbK mvwi‡Z Ae ̄’vb: Mn2+ > Cd2+ > Cu2+ > Pt2+ GLv‡b, Pt2+ Gi Ae ̄’vb mevi †k‡l ZvB GwU Av‡M PvR©gy3 n‡e| 29. 1 †gvj B‡jKUa‡bi †gvU PvR© KZ? [e. †ev. 21] 1.602 × 10–19 Kzj¤^ 1.602 × 10–19 × 6.022 × 1023 Kzj¤^ 6.022 × 1023 Kzj¤^ 196500 Kzj¤^ DËi: 1.602 × 10–19 × 6.022 × 1023 Kzj¤^ e ̈vL ̈v: 1 †gvj B‡jKUa‡b 6.023 × 1023 wU B‡jKUab Av‡Q 1wU B‡jKUa‡bi PvR© = 1.602 × 10–19 C  6.023 × 1023 wU B‡jKUa‡bi PvR© = (1.602 × 10–19 × 6.023 × 1023) C 30. Lv` ̈ je‡Yi Rjxq `aeY‡K Zwor we‡kølY Ki‡j K ̈v‡_v‡W †Kvb M ̈vmwU gy3 nq? [w`. †ev. 21] O2 N2 Cl2 H2 DËi: H2 31. †Kvb AvqbwU Av‡M PvR©gy3 n‡e? [g. †ev. 21] Cu2+ Fe2+ Na+ Ag+ DËi: Ag+ e ̈vL ̈v: Zwor ivmvqwbK mvwi‡Z †hme Avq‡bi Ae ̄’vb wb‡Pi w`‡K Zv‡`i PvR©gy3 nIqvi cÖeYZv A‡cÿvK...Z Dc‡ii w`‡Ki Avq‡bi †_‡K †ewk| cÖ`Ë PviwU Avq‡bi Zwor ivmvqwbK mvwi‡Z Ae ̄’vb- Na+ > Fe2+ > Cu2+ > Ag+ GLv‡b, Ag+ Gi Ae ̄’vb mevi †k‡l ZvB GwU Av‡M PvR©gy3 n‡e|