Title P1 C5 কর্মমুখী রসায়ন FRB Practice Sheet ws .pdf ✅

Kg©gyLx imvqb  Final Revision Batch 1 Kg©gyLx imvqb Vocational Chemistry cÂg Aa ̈vq Topicwise Board Analysis eûwbe©vPwb cÖkœ UwcK 2017 2018 2019 2021 2022 2023 †gvU Lv` ̈ wbivcËv, Lv` ̈ msiÿY cÖwμqv I wcÖRvi‡fwUf&m 3 0 2 0 8 9 21 wf‡bMvi I wf‡bMv‡ii wμqv‡KŠkj 4 0 5 8 6 8 31 m„Rbkxj cÖkœ UwcK 2017 2018 2019 2021 2022 2023 †gvU Lv` ̈ wbivcËv, Lv` ̈ msiÿY cÖwμqv I wcÖRvi‡fwUf&m 0 4 0 1 1 0 6 wf‡bMvi I wf‡bMv‡ii wμqv‡KŠkj 5 0 1 9 10 16 41 *we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n Lv` ̈ wbivcËv, Lv` ̈ msiÿY cÖwμqv I wcÖRvi‡fwUf&m 1. AYyRx‡ei e„w×i Rb ̈ †KvbwU cÖ‡qvRb? [Xv. †ev. 23] A¤øxq cwi‡ek Rjxq cwi‡ek ÿvixq cwi‡ek A ̈vj‡Kvnjxq cwi‡ek DËi: Rjxq cwi‡ek e ̈vL ̈v: Lv` ̈e ̄‘‡Z GbRvB‡gi wμqv msNU‡bi Rb ̈ Lv` ̈e ̄‘‡Z _vKv Ôcvwb-mwμqZvÕ n‡jv GKwU cÖ‡qvRbxq Dcv`vb ev d ̈v±i| G‡ÿ‡Î wbw`©ó ZvcgvÎvq Lv` ̈e ̄‘‡Z _vKv cvwb ev Rjxq ev‡®úi cwigvY Ges Lv` ̈e ̄‘i Pvicv‡ki cwi‡e‡k _vKv Rjxq ev‡®úi cwigv‡Yi AbycvZ‡K Ôcvwb-mwμqZvÕ (aw) ev water activity ejv nq| AYyRx‡ei e„w×i Rb ̈ g~jZ Lvev‡i we` ̈gvb Rjxq cwi‡ek `vqx| 2. †KvbwU AwZwi3 Av`a©Zv †kvlY K‡i Lv` ̈‡K msiÿY K‡i? [Xv. †ev. 23] wPwb gmjv †Zj A¤ø DËi: wPwb e ̈vL ̈v: wPwb Ges jeY Øviv †Kv‡bv Lv` ̈ msiÿ‡Y Giv Lv` ̈ †_‡K gy3 cvwb †kvlY K‡i `ae‡Y cwiYZ K‡i| d‡j Av`a©Zvi Abycw ̄’wZ‡Z Lv‡` ̈ AYyRxe Rb¥v‡Z ev eske„w× Ki‡Z cv‡i bv| 3. †KvbwU K...wÎg Lv` ̈ msiÿK? [iv. †ev. 23; Xv. †ev. 17; w`. †ev. 16, 15] mwilvi †Zj †mvwWqvg †eb‡Rv‡qU wPwb †mvwWqvg †K¬vivBW DËi: †mvwWqvg †eb‡Rv‡qU e ̈vL ̈v: 1. cÖvK...wZK wcÖRvi‡fwUf: Lv` ̈ jeY (NaCl), wPwb, wf‡bMvi, B_vbj, mvBwUaK GwmW, njy`, imyb mwilvi †Zj cÖf...wZ| 2. K...wÎg wcÖRvi‡fwUf: miweK GwmW I Zvi jeY, †eb‡RvwqK GwmW I Zvi jeY, K ̈vjwmqvg †cÖvcv‡bv‡qU, NaNO3, NaNO2, SO2, †mvwWqvg evB- mvjdvBU, cUvwkqvg evB-mvjdvBU, EDTA cÖf...wZ| 4. wb‡Pi †KvbwU cÖvK...wZK Lv` ̈ msiÿK? [P. †ev. 23] mvjdvi WvBA·vBW †mvwWqvg †eb‡Rv‡qU †mvwWqvg †K¬vivBW Bw_wjb MøvBKj DËi: †mvwWqvg †K¬vivBW 5. †KvbwU K...wÎg wcÖRvi‡fwUf? [e. †ev. 23] †mvwWqvg †K¬vivBW wPwb wf‡bMvi †mvwWqvg †eb‡Rv‡qU DËi: †mvwWqvg †eb‡Rv‡qU 6. †KvbwU DËg Lv` ̈ msiÿK? [Kz. †ev. 23] wf‡bMvi A ̈vKzqvm A ̈v‡gvwbqv NaOH C6H5COONa DËi: wf‡bMvi e ̈vL ̈v: Lv` ̈`a‡e ̈ wf‡bMvi †hvM Kivi d‡j Zv Dcv`v‡bi pH gvb‡K Kwg‡q †`q| †hme Lv‡` ̈i pH gvb 4.5 A‡cÿv Kg †m ̧‡jv e ̈vK‡Uwiqv Øviv bó nq bv| cÖvK...wZK Lv` ̈ msiÿK wn‡m‡e wf‡bMvi me‡P‡q †ewk e ̈eüZ nq|
2  HSC Chemistry 1st Paper Chapter-5 7. Lv` ̈e ̄‘i wjwc‡Wi RviY †iva Kivi Rb ̈ †KvbwU e ̈envi Kiv nq? [h. †ev. 23] SO2 CH3CHO CH3COOH H2SO4 DËi: SO2 e ̈vL ̈v: SO2 mvjdvBU jeY wn‡m‡e wμqv K‡i wjwcW AYyi RviY-weRvi‡Y AskMÖnYKvix O2 AYy I wjwcW AYy †_‡K m„ó gy3 g~jK‡K †kvlY K‡i Lv` ̈e ̄‘i wjwc‡Wi RviY †iva K‡i| d‡j Lv` ̈e ̄‘i cPb †iva nq| 8. BHA I BHT Øviv †Kvb ai‡bi Lv` ̈ msiÿY Kiv nq? [h. †ev. 23] UK RvZxq dj wgwó RvZxq dj gvsm RvZxq Lv` ̈ •Zj I Pwe© RvZxq Lv` ̈ DËi: •Zj I Pwe© RvZxq Lv` ̈ e ̈vL ̈v: •Zj I Pwe© RvZxq Lv‡` ̈i msiÿK wn‡m‡e e ̈eüZ A ̈vw›U Aw·‡W›Umg~n `yB †kÖwYfz3| †hgb: 1| cÖvK...wZK A ̈vw›U Aw·‡W›U: wfUvwgb-wm, wfUvwgb-B, weUv () K ̈v‡ivwUb| 2| Aby‡gvw`Z K...wÎg A ̈vw›U-Aw·‡W›U: BHA, BHT, TBHQ I †cÖvcvBj M ̈v‡jU| 9. A ̈vw›U-Aw·‡W›U G‡R›U †KvbwU? [h. †ev. 23; w`. †ev. 19] BHA NaNO2 C6H5COOH SO2 DËi: BHA 10. Lv` ̈ msiÿ‡Y e ̈eüZ A ̈vw›U Aw·‡W›U †KvbwU? [P. †ev. 23; wm. †ev. 22] EDTA BHT CH3COOH C6H12O6 DËi: BHT 11. †KvbwU A ̈vw›U-Aw·‡W›U? [wm. †ev. 23] †mvwWqvg †eb‡Rv‡qU -K ̈v‡ivwUb miweK GwmW mvBwUaK GwmW DËi: -K ̈v‡ivwUb 12. •Zj I Pwe©hy3 Lv` ̈ msiÿ‡Y †KvbwU e ̈eüZ nq? [g. †ev. 23] BHA EDTA GwmwUK GwmW †mvwWqvg †eb‡Rv‡qU DËi: BHA 13. wb‡¤œi †KvbwU Am‡gvwmm cÖwμqvq Lv` ̈ msiÿY K‡i? [e. †ev. 23] wf‡bMvi mwilvi †Zj wPwb wfUvwgb wm DËi: wPwb e ̈vL ̈v: wPwbi Mvp `ae‡Yi Dcw ̄’wZ‡Z e ̈vK‡Uwiqv (AYyRxe) †Kv‡li ga ̈ ̄’ Rjxq Ask‡K wPwbi Mvp `aeY Am‡gvwmm ev Awf ̄aeY cÖwμqvq ï‡l †bq| d‡j Lv‡` ̈i e ̈vK‡Uwiqv webó nq| 14. wb‡Pi †KvbwU A ̈vw›U-Aw·‡W›U bq? [e. †ev. 23] BHT TBHQ BHA EDTA DËi: EDTA e ̈vL ̈v: gy3 g~jK †kvlYKvix A ̈vw›U-Aw·‡W›Umg~n n‡jvÑ weDUvB‡j‡UW nvBWaw· Gwbmj, BHA; weDUvB‡j‡UW nvBWaw· UjyBb, BHT; Uviwmqvwi weDUvBj nvBWaKzB‡bvb, TBHQ; †cÖvcvBj M ̈v‡jU| EDTA wK‡jwUs G‡R›U wn‡m‡e e ̈eüZ nq| 15. EDTA Kxfv‡e Lv` ̈ msiÿY K‡i? [w`. †ev. 23] cvwb wbiæ`‡bi gva ̈‡g weRviY cÖwμqvi gva ̈‡g RviY cÖwμqvi gva ̈‡g wK‡jU MV‡bi gva ̈‡g DËi: wK‡jU MV‡bi gva ̈‡g e ̈vL ̈v: †hme ivmvqwbK c`v_© Lv` ̈`a‡e ̈ Ae ̄’všÍi avZzi Avqb‡K (Fe2+ , Fe3+ , Co3+ , Cu2+ ) wK‡jU †hŠM MV‡bi gva ̈‡g Zv‡`i cÖfveb ÿgZv webó K‡i Zv‡`i‡K wK‡jwUs G‡R›U e‡j| EDTA eûj e ̈eüZ wK‡jwUs G‡R›U| 16. gë wgkÖ‡Y KZ kZvsk B_vbj we` ̈gvb? [w`. †ev. 23] 6% 10% 16% 20% DËi: 10% e ̈vL ̈v: gë wgkÖ‡Y 10% B_vbj _v‡K| G gë wgkÖ‡Yi Rjxq `aeY‡K ÔA ̈vwm‡Uv-e ̈vKUiÕ bvgK e ̈vK‡Uwiqvi Dcw ̄’wZ‡Z DËß evqyi Aw·‡Rb Øviv RvwiZ K‡i gë wf‡bMvi cÖ ̄‘ Kiv hvq| 17. wb‡Pi †KvbwU cÖvK...wZK Lv` ̈ msiÿK wnmv‡e e ̈eüZ nq? [Xv. †ev. 22] SO2 NaNO3 Na2CO3 NaCl DËi: NaCl e ̈vL ̈v: b ̈vPvivj dzW wcÖRvi‡fwUfm: jeY (†mvwWqvg †K¬vivBW), wf‡bMvi, wPwb, A ̈v‡Kvnj, njy`, mwilvi •Zj| 18. wb‡Pi †KvbwU wK‡jwUs G‡R›U wnmv‡e e ̈eüZ nq? [Xv. †ev. 22] BHA BHT HCHO EDTA DËi: EDTA e ̈vL ̈v: Lv` ̈e ̄‘ msiÿ‡Y wkí‡ÿ‡Î me‡P‡q †ewk e ̈eüZ wK‡jwUs G‡R›U EDTA|
Kg©gyLx imvqb  Final Revision Batch 3 19. wb‡Pi †Kvb Dcv`vb Øviv Lv` ̈ msiÿY c×wZ‡K wKDwis e‡j? [iv. †ev. 22; h. †ev. 22; Kz. †ev. 22] mwilvi †Zj wPwb Lv` ̈ jeY wf‡bMvi DËi: Lv` ̈ jeY e ̈vL ̈v: je‡Yi Mvp `ae‡Y Lv` ̈ msiÿY cÖwμqvi bvg mjwUs ev wKDwis| 20. wKDwis-G †KvbwU e ̈eüZ nq? [Kz. †ev. 22; h. †ev. 22] Nal NaBr NaCl NaF DËi: NaCl e ̈vL ̈v: cPbkxj Lv` ̈e ̄‘‡K Lv` ̈ jeY (NaCl) ev Gi Mvp `aeY Øviv msiÿY Kiv‡K wKDwis e‡j| 7 – 8% NaCl ev Gi AwaK (15 – 20%) Mvp `aeY e ̈envi Kiv nq| 21. cÖvK...wZK A ̈vw›U Aw·‡W›U †KvbwU? [P. †ev. 22] weUv K ̈v‡ivwUb wf‡bMvi BHT BHA DËi: weUv K ̈v‡ivwUb e ̈vL ̈v: cÖvK...wZK A ̈vw›U-Aw·‡W›U K...wÎg A ̈vw›U- Aw·‡W›U i. wfUvwgb C ev GmKiweK GwmW i. BHA ii. wfUvwgb-E ev U‡Kv‡dij ii. BHT iii. weUv () K ̈v‡ivwUb iii. TBHQ iv. AavZz †m‡jwbqvg Se(34) iv. †cÖvcvBj M ̈v‡jU 22. Lv` ̈ wbivcËvi mv‡_ m¤ú„3 †KvbwU? [e. †ev. 22] AwaK Lv` ̈ Drcv`b D”P djbkxj dmj Drcv`b Lv` ̈ msiÿY Lv` ̈ wecYb DËi: Lv` ̈ msiÿY e ̈vL ̈v: WHO (World Health Organization) Lv` ̈ wbivcËvi Rb ̈ 5wU w`K wb‡`k©bv w`‡q‡Q| †m ̧‡jv n‡jvÑ i. `~lYgy3 Lv` ̈ ii. KuvPv I ivbœv Lv` ̈ c„_K ivLv iii. h_vh_ ivbœv iv. Lv` ̈ msiÿY v. wbivc` cvwb| 23. Lv` ̈`ae ̈ cP‡bi KviYÑ [wm. †ev. 22] i. †mvwWqvg †eb‡Rv‡qU ii. Lv‡` ̈i RviY iii. A ̈vw›U-Aw·‡W‡›Ui Afve wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii DËi: ii I iii e ̈vL ̈v: †mvwWqvg †eb‡Rv‡qU (C6H5COONa) GKwU dzW wcÖRvi‡fwUf| GwU Lv` ̈ msiÿ‡Y e ̈eüZ nq| Lv` ̈ Dcv`v‡bi ga ̈eZx© RviY Ges Lv‡` ̈ A ̈vw›U-Aw·‡W‡›Ui Afve Lv` ̈`ae ̈ cP‡bi Ab ̈Zg KviY| 24. gvsm msiÿ‡Y e ̈eüZ Lv` ̈ msiÿK †KvbwU? [Kz. †ev. 19; wm. †ev. 19] †mvwWqvg mi‡eU miweU GwmW †mvwWqvg bvBUavBU mvjdvi WvBA·vBW DËi: †mvwWqvg bvBUavBU e ̈vL ̈v: †mvwWqvg bvBUavBU gvs‡mi g‡a ̈ e ̈vK‡Uwiqv we‡klZ K¬mwUawWqvg eUzwjbv‡gi AvμgY cÖwZ‡iva K‡i| GwU A ̈vw›U gvB‡μvev‡qj G‡R›U wn‡m‡e KvR K‡i| 25. A ̈vw›U-Aw·‡W‡›Ui KvR n‡jv- [wm. †ev. 19] i. RviY-wμqv‡K gš’i Kiv ii. ZvcgvÎv wbqš¿Y Kiv iii. cvwb †kvlY Kiv wb‡Pi †KvbwU mwVK? i ii i I iii ii I iii DËi: i e ̈vL ̈v: A ̈vw›U-Aw·‡W›U AYy wjwcW gy3 g~j‡Ki mv‡_ wewμqv K‡i wjwcW AYy I AwaK ̄’vqx Kg mwμq A ̈vw›U- Aw·‡W›U gy3 g~jK m„wó K‡i| d‡j cP‡bi RviY- weRviY wewμqv eÜ nq| 26. wcÖRvi‡fwUf †KvbwU? [mw¤§wjZ †evW©- 18] Na2SO4 NaNO3 CH3COONa C6H5COONa DËi: C6H5COONa e ̈vL ̈v: Lv` ̈ msiÿ‡Y e ̈eüZ wewfbœ ivmvqwbK c`v_© I G‡`i f~wgKv: ivmvqwbK c`v_©, ms‡KZ †kÖwY e ̈env‡ii D‡Ïk ̈ I †ÿÎ wcÖRvi‡fwUfm: †mvwWqvg †eb‡Rv‡qU (C6H5CO2Na), †mvwWqvg mi‡eU (C5H7CO2Na) A ̈vw›UgvB‡μvweqvj C÷, †gvìm& I wewfbœ AYyRxe aŸsmKvix| d‡ji im, AvPvi, †Rwj, cwbi, cvDiæwU, we ̄‹zU, mdU wWasKm| †cÖvcv‡bv‡qUmg~n (CH3CH2CO2)2Ca A ̈vw›UgvB‡μvweqvj C÷, †gvìm&, e ̈vK‡Uwiqv aŸsmKvix| d‡ji im, †KK, cwbi| KHSO3, SO2 A ̈vw›UgvB‡μvweqvj g`, Rym I ïK‡bv dj| mvqwUaK GwmW (C6H8O7) A ̈vw›UgvB‡μvweqvj †KŠUvRvZK...Z Lv` ̈, gvQ, gvsm| NaNO3, NaNO2 K¬mwUawWqvg eUzwjbvgbvkK mvgyw`aK gvQ I gvsm msiÿ‡Y e ̈eüZ|
4  HSC Chemistry 1st Paper Chapter-5 27. Lv` ̈`ae ̈ cP‡bi KviY- [mw¤§wjZ †evW©-18] i. Pwe©i Dcw ̄’wZ ii. Lv‡` ̈i RviY iii. A ̈vw›U-Aw·‡W‡›Ui Afve wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii DËi: i, ii I iii e ̈vL ̈v: Pwe© RvZxq e ̄‘ Lv` ̈`ae ̈ RvwiZ n‡Z f~wgKv iv‡L| Lv` ̈`ae ̈ RvwiZ n‡q c‡P hvq| A ̈vw›U-Aw·‡W›U Lv` ̈`ae ̈‡K RvwiZ nIqv †_‡K iÿv K‡i| myZivs, A ̈vw›U-Aw·‡W‡›Ui Afv‡e Lv` ̈`ae ̈ RvwiZ n‡q c‡P hvq| 28. miweK GwmW n‡jv- [iv. †ev. 17] i. A ̈vw›U gvB‡μvweqvj wcÖRvi‡fwUfm ii. 2, 4-†n·-WvB Bb-1-IwqK GwmW iii. A ̈vw›UAw·‡W›U wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii DËi: i I ii e ̈vL ̈v: miweK GwmW n‡jv A ̈vw›U gvB‡μvweqvj wcÖRvi‡fwUf| Gi ivmvqwbK bvg n‡jv 2, 4-†n·-WvB Bb-1-IwqK GwmW| CH3 – CH = CH – CH = CH – COOH miweK GwmW 29. wcÖRvi‡fwUf wn‡m‡e e ̈eüZ nq? [P. †ev. 17] i. CH3COOH ii. BHA and BHT iii. CH3OH wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii DËi: i I ii e ̈vL ̈v:  wf‡bMv‡i 6 – 10% CH3COOH `aeY e ̈eüZ nq hv cÖvK...wZK wcÖRvi‡fwUf|  BHA Ges BHT n‡jv A ̈vw›U-Aw·‡W›U hv dzW wcÖRvi‡fwUfm|  CH3OH(wg_vbj) wcÖRvi‡fwUf bq| 30. K...wÎg A ̈vw›U Aw·‡W›U n‡jv- [Xv. †ev. 16] wfUvwgb C †mvwWqvg †K¬vivBW myMvi †cÖvcvBj M ̈v‡jU DËi: †cÖvcvBj M ̈v‡jU e ̈vL ̈v: AvšÍR©vwZK Lv` ̈ ms ̄’v KZ...©K Aby‡gvw`Z K...wÎg A ̈vw›U- Aw·‡W›Umg~n n‡jv BHA, BHT, TBHQ I †cÖvcvBj M ̈v‡jU| 31. Rym msiÿ‡Y wb‡¤œi †Kvb wcÖRvi‡fwUf e ̈envi Kiv nq? [Xv. †ev. 16] wf‡bMvi cUvwmqvg †gUvevBmvj‡dU mvjdvi WvBA·vBW †mvwWqvg †eb‡Rv‡qU DËi: †mvwWqvg †eb‡Rv‡qU e ̈vL ̈v: †mvwWqvg †eb‡Rv‡qU A ̈vw›U gvB‡μvweqvj G‡R›U wn‡m‡e d‡ji im, mdU wWasKm&, Rym, AvPvi, †Rwj BZ ̈vw` msiÿ‡Y e ̈eüZ nq| 32. Lv‡` ̈i †Kvb Dcv`vbwU g~jZ cP‡bi Rb ̈ `vqx? [Kz. †ev. 16] wfUvwgb jeY wjwcW cvwb DËi: cvwb e ̈vL ̈v: Lv‡` ̈ we` ̈gvb cvwbi cwigvY cwiewZ©Z n‡j cywó Dcv`v‡bi NvUwZ nq, eY© ev`vgx nq Ges Lv‡` ̈i cPb nq| Lv` ̈e ̄‘‡Z AwZwi3 cvwbi Dcw ̄’wZ Lv` ̈e ̄‘‡Z e ̈vK‡Uwiqv e„w×i Rb ̈ mnvqK| 33. †KvbwU Lv` ̈ msiÿK bq? [P. †ev. 16] wPwb digvwjb wf‡bMvi jeY DËi: digvwjb e ̈vL ̈v: digvwjb Øviv Lv` ̈ msiÿY Kiv nq bv| KviY digvwjb gvbyl Ges cÖvYx mK‡ji Rb ̈ welv3 c`v_©| 34. BHT Gi c~Y©iƒc †KvbwU? [w`. †ev. 16] Butylated Hydro Toluene Butylated Hydroxy Toluene Butahydrated Hydroxy Thiamine Butahydrated Hydro Thiamine DËi: Butylated Hydroxy Toluene 35. Aby‡gvw`Z K...wÎg A ̈vw›U Aw·‡W›U n‡jv- [iv. †ev. 16] i. BHA (Butylated hydroxy anisole) ii. BHT (Butylated hydroxy toluene) iii. TBHQ (Tertiary butyl hydroquinone) wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii DËi: i, ii I iii e ̈vL ̈v: K...wÎg A ̈vw›U Aw·‡W›U G‡R›U: weDUvB‡j‡UW nvBWaw· Gwbmj (BHA), weDUvB‡j‡UW nvBWaw· UjyBb (BHT), Uviwmqvwi weDUvBj nvBWaKzB‡bvb (TBHQ) BZ ̈vw`|