Tiêu đề 5. Chemistry FRB-With Solve.pdf ✅

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|

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`|