Tiêu đề 5. (1st Paper) Vocational chemistry-With Solve.pdf ✅

Kg©gyLx imvqb  Varsity Practice Sheet ............................................................................................................................. 1 MCQ weMZ mv‡j JU-G Avmv cÖkœvejx 1. GmKiweK Gwm‡Wi Afv‡e †Kvb †ivM nq? [JU 22-23] [Easy] †ewi‡ewi ̄‹vwf© wi‡KUm †Kv‡bvwUB bq DËi: ̄‹vwf© e ̈vL ̈v: wfUvwgb-wm ev GmKiweK Gwm‡Wi Afv‡e ̄‹vwf© †ivM nq| GB †iv‡Mi cÖv_wgK DcmM© ̧‡jv n‡jv `ye©jZv, K¬vwšÍ‡eva I nv‡Z-cv‡q e ̈v_v| 2. ivmvqwbK wcKwjs cÖwμqvq c„w_exe ̈vcx me©vwaK e ̈eüZ Lv` ̈ msiÿKÑ [JU-D 22-23] B_vBj A ̈vj‡Kvnj B_vbwqK Gwm‡Wi 20% `aeY wf‡bMvi †dbj A ̈vj‡Kvnj DËi: wf‡bMvi e ̈vL ̈v: e ̈vK‡Uwiqv †ivaK Zij c`v_© †hgb- †fvR ̈ mwilvi †Zj, wf‡bMvi I gwiP gmjvi wgkÖ‡Y wm× Kiv KuvPv d‡ji msiÿY cÖwμqv‡K wcKwjs ejv nq| GB ivmvqwbK wcKwjs cÖwμqvq wf‡bMviB c„w_exe ̈vcx me©vwaK e ̈eüZ Lv` ̈ msiÿK| 3. wf‡bMv‡i kZKiv KZ fvM cvwb _v‡K? [JU-A 22-23, 16-17] 6 – 10% 30 – 40% 60 – 50% 90 – 94% DËi: 90 – 94% e ̈vL ̈v: B_v‡bvwqK GwmW (CH3COOH) Gi 6 – 10% Rjxq `aeY‡K wf‡bMvi ejv nq| G‡Z kZKiv 90 – 94% cvwb _v‡K| 4. wf‡bMvi wK? [JU-A 22-23; RU 20-21] 2 – 3% B_v‡bvwqK GwmW 2 – 3% wg_v‡bvwqK GwmW 6 – 10% B_v‡bvwqK GwmW 6 – 10% wg_v‡bvwqK GwmW DËi: 6 – 10% B_v‡bvwqK GwmW e ̈vL ̈v: B_v‡bvwqK GwmW (CH3COOH) Gi 6 – 10% Rjxq `aeY‡K wf‡bMvi| GwU e ̈vK‡Uwiqv †ivaK Zij c`v_©| gvQ, gvsm, kvKmewR, †QvU exRhy3 KvuPv dj BZ ̈vw` msiÿ‡Y wf‡bMvi e ̈eüZ nq| 5. †`‡ni e„w×mvab I ÿqc~iY K‡i †Kvb Lv` ̈ Dcv`vb? [JU 21-22] kK©iv Avwgl wfUvwgb LwbR jeY DËi: Avwgl e ̈vL ̈v: kK©iv: †`‡n kw3 Drcv`‡b mnvqZv K‡i| Avwgl: †`‡ni e„w×mvab Ges ÿqc~iY K‡i| wfUvwgb: cywó I †`n msiÿY K‡i, †ivM cÖwZ‡iva kw3 evovq Ges wewfbœ ivmvqwbK wewμqvq DÏxcbv †hvMvq| LwbR jeY: wewfbœ •RweK Kv‡R Ask †bq| 6. †`‡ni kw3 mieivn K‡i †Kvb Lv` ̈ Dcv`vb? [JU-A 21-22] kK©iv Avwgl wfUvwgb LwbR jeY DËi: kK©iv e ̈vL ̈v: kK©iv Rxe‡`‡ni kw3i cÖavb Drm wn‡m‡e KvR K‡i I †`‡n kw3 Drcv`‡b mnvqZv K‡i| 7. cywó I †`n msiÿY K‡i †Kvb Lv` ̈ Dcv`vb? [JU-A 21-22] kK©iv Avwgl wfUvwgb LwbR jeY DËi: wfUvwgb e ̈vL ̈v: wfUvwgb cywó I †`n msiÿ‡Yi gva ̈‡g †`‡ni †ivM cÖwZ‡iva ÿgZv e„w× K‡i _v‡K Ges wewfbœ ivmvqwbK wewμqvq DÏxcbv †hvMvq| 8. †KvôKvwVb ̈ RwbZ †ivM †_‡K iÿv K‡i Lv‡` ̈i †Kvb Dcv`vb? [JU-A 21-22] AuvkRvZxq c`v_© wfUvwgb LwbR jeY †cÖvwUb DËi: AuvkRvZxq c`v_© e ̈vL ̈v: AuvkRvZxq c`v_©: †KvôKvwVb ̈ RwbZ †ivM †_‡K iÿv K‡i| Avwgl ev †cÖvwUb: †`‡ni e„w×mvab Ges ÿqc~iY K‡i| wfUvwgb: cywó I †`n msiÿY K‡i, †ivM cÖwZ‡iva kw3 evovq Ges wewfbœ ivmvqwbK wewμqvq DÏxcbv †hvMvq| LwbR jeY: wewfbœ •RweK Kv‡R Ask †bq|
2 ....................................................................................................................................  Chemistry 1st Paper Chapter-5 9. Dw3 ̧‡jv jÿ ̈ Ki: i. Có †_‡K Bbfvi‡UR I RvB‡gR wbtm„Z nq ii. Bbfvi‡UR Møy‡KvR I d«z‡±vR‡K we‡qvwRZ K‡i B_vbj I CO2 G cwiYZ K‡i iii. RvB‡gR Møy‡KvR I d«z‡±vR‡K we‡qvwRZ K‡i B_vbj I CO2 G cwiYZ K‡i iv. RvB‡gR wPwb‡K Av`a© we‡kølY K‡i Møy‡KvR I d«z‡±v‡R cwiYZ K‡i wb‡Pi †KvbwU mwVK? [JU-D 21-22] ii, iv i, ii, iii ii, iii i, iii DËi: i, iii e ̈vL ̈v: C÷ †_‡K wbtm„Z Bbfvi‡UR I RvB‡gR GbRvB‡gi cÖfv‡e my‡μv‡Ri dvi‡g‡›Ukb ev MuvRb N‡U| Bbfvi‡U‡Ri cÖfv‡e my‡μvR wPwb Av`a© we‡køwlZ n‡q Møy‡KvR I d«z‡±v‡Ri wgkÖY •Zwi K‡i hv BbfvU© wPwb bv‡g cwiwPZ| RvB‡gR GbRvB‡gi cÖfv‡e Møy‡KvR I d«z‡±vR we‡qvwRZ n‡q B_vbj I CO2 Drcbœ K‡i| C12H22O11 + wPwb (my‡μvR) H2O Bbfvi‡UR  37C C6H12O6 + C6H12O (Møy‡KvR + d«z‡±vR = BbfvU© wPwb) 2C6H12O6 wPwb (my‡μvR) RvB‡gR  20C – 24C 4CH3 – CH2 – OH B_vbj + 4CO2 10. gë wf‡bMvi cÖ ̄‘wZ‡Z my‡μv‡Ri Av`a© we‡køl‡Y †Kvb GbRvBg e ̈eüZ nq? [JU-A 21-22] Wvqv‡÷R RvB‡gR g ̈v‡ëR Bbfvi‡UR DËi: Bbfvi‡UR e ̈vL ̈v: wPwb(my‡μvR) + H2O Bbfvi‡UR  Møy‡KvR + d«z‡±vR (BbfvU© wPwb) 11. wf‡bMvi m¤ú‡K© wb‡Pi †h Dw3 ̧‡jv mwVK bqÑ i. GwU `v‡g m ̄Ív I mnRjf ̈ ii. Lv‡` ̈i ̧YMZ gvb wKQzUv cwieZ©b Ki‡jI ÿwZKi bq iii. cvwb‡Z `aexf~Z n‡q hvq bv iv. Lv‡` ̈i pH gvb Kgvq e‡j e ̈vK‡Uwiqv Øviv AvμvšÍ nq bv wb‡Pi †KvbwU mwVK? [JU-D 21-22] i, iii, iv i, ii, iv ii, iii i, ii, iii DËi: ii, iii e ̈vL ̈v:  wf‡bMvi `v‡g m ̄Ív Ges mnRjf ̈ dzW wcÖRvi‡fwUfm|  GwU Lv‡` ̈i ̧YMZ gvb cwieZ©b K‡i bv|  wf‡bMvi cvwb‡Z `aexf~Z nq|  wf‡bMvi Lv‡` ̈i pH gvb Kwg‡q †`q| d‡j Lv‡` ̈ ÿwZKi e ̈vK‡Uwiqv †eu‡P _vK‡Z cv‡i bv| 12. Dw3 ̧‡jv jÿ ̈ Ki: i. wf‡bMvi †`‡ni pH Gi mgZv K‡i ii. AwaKvsk AYyRx‡ei eskwe ̄Ív‡ii AbyK~j pH cwimi 4-5 iii. wf‡bMv‡ii ms ̄ú‡k© †cÖvwUb AYyi mn‡RB we‡qvRb N‡U iv. †Zj I Pwe©i RviY wμqvi gva ̈‡g gvQ-gvsm bó n‡q UK ̄^v` I `yM©Ühy3 nq wb‡Pi †KvbwU mwVK? [JU-D 21-22] i, iii, iv ii, iii, iv i, ii, iii i, ii, iv DËi: i, iii, iv e ̈vL ̈v:  wf‡bMvi g„`y GwmW nIqvq Lv‡` ̈i mv‡_ MÖn‡Y GwU Lvevi I †`‡ni pH Gi mgZv eRvq iv‡L|  AwaKvsk AYyRx‡ei eskwe ̄Ív‡ii AbyK~j pH cwimi 6.5 – 7.5  wf‡bMv‡ii ms ̄ú‡k© †cÖvwUb AYyi mn‡RB we‡qvRb N‡U|  †Zj I Pwe©i RviY wμqvi d‡j Lv` ̈`ae ̈ bó n‡q UK ̄^v` I `yM©Ühy3 nq| 13. TSP Gi mwVK mshyw3 †KvbwU? [JU-D 20-21] [Ca(H2PO4)2 + 2Ca(NO3)2] Ca(H2PO4)2.H2O Ca(H2PO4)2 (NH4)2HPO4 DËi: Ca(H2PO4)2 e ̈vL ̈v:  Triple Super Phosphate (TSP): Ca(H2PO4)2  Calcium Super Phosphote: Ca(H2PO4)2.H2O  WvB A ̈v‡gvwbqvg dm‡dU (DAP): (NH4)2HPO4 14. mvi I we‡ùviK •Zwi‡Z e ̈eüZ GwmW †KvbwU? [JU-D 20-21] bvBwUaK GwmW mvjwdDwiK GwmW dmdwiK GwmW nvB‡Wav‡K¬vwiK GwmW DËi: bvBwUaK GwmW e ̈vL ̈v:  mvi wn‡m‡e: Ca(NO3)2, Ca(NO3)2.CaO, NH4NO3  we‡ùviK wn‡m‡e: T.N.T, bvB‡UavwMømvwib, T.N.B, MvbKUb 15. †KvbwU wK‡jwUs G‡R›U wn‡m‡e e ̈eüZ nq? [JU-D 20-21] mvBwUaK GwmW GmKiweK GwmW weDUvB‡j‡UW nvBWaw· UjyBb (BHT) †KvbwUB bq DËi: mvBwUaK GwmW e ̈vL ̈v: EDTA, EDA, mvBwUaK GwmW, g ̈vwjK GwmW, wdbvBj nvBWavwRb BZ ̈vw` wK‡jwUs G‡R›U wn‡m‡e KvR K‡i| GmKiweK GwmW, U‡Kv‡dij,  K ̈v‡ivwUb, Se(34), BHA, BHT, TBHQ, PG BZ ̈vw` A ̈vw›U-Aw·‡W›U G‡R›U wn‡m‡e KvR K‡i|
Kg©gyLx imvqb  Varsity Practice Sheet ............................................................................................................................ 3 16. †iKUvg A‡j cvwb ̄^íZvi m„wó K‡i †KvbwU? [JU-D 20-21] cUvwkqvg †eb‡Rv‡qU cUvwkqvg bvBUavBU cUvwkqvg mi‡eU †dbj A ̈vj‡Kvnj DËi: cUvwkqvg bvBUavBU e ̈vL ̈v: Anti-Microbial Agent cvk©¦ cÖwZwμqv bvBUavBU I bvB‡UaU jeY cvK ̄’wj‡Z ÿZ, Lv` ̈ bvwj‡Z msμgY, †iKUvg A‡j cvwb ̄^íZv mi‡eU jeY AwaK pH gv‡bi Lv` ̈`a‡e ̈i Rb ̈ ÿwZKi †eb‡Rv‡qU jeY K ̈vÝvi †Kvl e„w× 17. wPwbi Av`a© we‡køl‡Y cÖfveK wnmv‡e KvR K‡i †KvbwU? [JU-D 20-21] HCl Fe Pt MnO2 DËi: HCl e ̈vL ̈v: my‡μvR ev BÿzwPwbi Av`a© we‡køl‡Y LwbR GwmW cÖfveK wn‡m‡e KvR K‡i| C12H22O11(aq) my‡μvR + H2O(l) H + (aq)  C6H12O6(aq) Møy‡KvR + C6H12O6(aq) d«z‡±vR 18. Lv‡` ̈i cPb NUvi KviYÑ (i) Lv‡` ̈ cvwb bv _vKv (ii) fvBivm Rb¥v‡bv (iii) ZvcgvÎv 45C Gi †ewk _vKv wb‡Pi †KvbwU mwVK? [JU-A 19-20] i, ii i, iii ii, iii †Kv‡bvwUB bq DËi: ii, iii e ̈vL ̈v: Lv` ̈e ̄‘‡Z cvwbi Dcw ̄’wZ Ges 30C – 45C ev Zvi †ewk ZvcgvÎv e ̈vK‡Uwiqvi e„w× Z¡ivwš^Z Kivi Rb ̈ LyeB Dc‡hvMx| GB Ae ̄’v Lv` ̈e ̄‘‡K `aæZ cP‡b cÖfvweZ K‡i| Lv‡` ̈ fvBivm Rb¥v‡bvI Lv` ̈e ̄‘ cP‡bi Ab ̈Zg KviY| 19. Lv` ̈ bó nIqvi cÖavb KviYÑ (i) RxevYy Øviv cPb (ii) GbRvBg Øviv RviY (iii) avZe Avq‡bi cÖfve wb‡Pi †KvbwU mwVK? [JU-A 19-20] i, ii i, iii ii, iii i, ii, iii DËi: i, ii, iii e ̈vL ̈v: Lv` ̈`ae ̈ cP‡bi cÖavb KviY g~jZ wZbwU| †hgb: (i) RxevYy Øviv cPb| (ii) GbRvBg ev Dr‡mP‡Ki cÖfv‡e O2 Gi Dcw ̄’wZ‡Z Lv` ̈e ̄‘i ivmvqwbK RviY ev we‡hvRb| (iii) avZe Avq‡bi cÖfv‡e •Zj I Pwe©hy3 Lv` ̈e ̄‘‡Z RviY- we‡hvRb wewμqv| 20. †KŠUvq kvKmewR msiÿ‡Yi Rb ̈ e ̈eüZ Lv` ̈ je‡Yi `ae‡Yi gvÎv KZ? [JU-D 19-20] 0.5 – 1.5% 1.0 – 1.5% 1.5 – 2.0% 1.5 – 2.5% DËi: 1.5 – 2.5% e ̈vL ̈v: †KŠUvq msiÿ‡Yi †ÿ‡Î kvKmewR‡Z 1.5 – 2.5% Lv` ̈ je‡Yi `aeY Ges gvQ gvs‡mi †ÿ‡Î mvaviYZ 7 – 15% Lv` ̈ je‡Yi `aeY wcÖRvi‡fwUfm wn‡m‡e e ̈envi Kiv n‡q _v‡K| 21. †KvbwU †KŠUvq Lv` ̈`ae ̈ msiÿ‡Y wPwbi `aeY? [JU-D 19-20] 10 – 40% 20 – 40% 30 – 40% 40 – 50% DËi: 30 – 40% e ̈vL ̈v: †KŠUvq dj msiÿ‡Yi †ÿ‡Î K ̈vwbs Zijiƒ‡c 30 – 40% wPwbi `aeY wcÖRvi‡fwUf wn‡m‡e e ̈envi Kiv nq| 22. †Kvb pH G Lv` ̈`ae ̈ e ̈vK‡Uwiqv Øviv bó nq bv? [JU-D 19-20] > 4.5 < 5.5 < 4.5 > 5.5 DËi: < 4.5 e ̈vL ̈v: AwaKvsk AYyRx‡ei eske„w×i pH gvÎv 6.5 – 7.5 cwim‡i _v‡K| GRb ̈ A¤øxq cwi‡e‡k Lv` ̈ msiÿY K‡i ivLv nq| †hgb: wf‡bMv‡ii pH  4.74 nq| GB A¤øxq Ae ̄’vq Lv‡` ̈ e ̈vK‡Uwiqvi †Kv‡bv cÖfve _v‡K bv| 23. †Kvb Dcv`vb Øviv Lv` ̈ msiÿY c×wZ‡K wKDwis e‡j? [JU-A 17-18] jeY wf‡bMvi digvwjb †Zj DËi: jeY e ̈vL ̈v: cPbkxj Lv` ̈e ̄‘‡K Lv` ̈ jeY (NaCl) Gi Mvp `aeY Øviv msiÿY cÖwμqv‡K wKDwis ejv nq| NaCl Am‡gvwmm cÖwμqvq Lv` ̈e ̄‘i cvwb †kvlY K‡i †bq, d‡j Lv‡` ̈ e ̈vK‡Uwiqv Rb¥v‡Z cv‡i bv Ges Lv‡` ̈i cPb †iva nq| 24. Lv‡` ̈i †Kvb Dcv`vbwU g~jZ cP‡bi Rb ̈ `vqx? [JU-A 17-18] wfUvwgb jeY cvwb wPwb DËi: cvwb e ̈vL ̈v: Lv` ̈e ̄‘‡Z cvwbi Dcw ̄’wZ e ̈vK‡Uwiqvi e„w×I G‡`i Dr‡mP‡Ki wμqv Z¡ivwš^Z K‡i, hv Lv` ̈e ̄‘‡K `aæZ cP‡b cÖfvweZ K‡i|
4 ....................................................................................................................................  Chemistry 1st Paper Chapter-5 25. TBHQ-Gi ms‡KZ †KvbwU? [JU-D 17-18] C8H12O2 C9H13O3 C10H14O2 C14H16O2 DËi: C10H14O2 e ̈vL ̈v: OH OH C(CH3)3 TBHQ (C10H14O2) 26. †KvbwU b ̈vPvivj dzW wcÖRvi‡fwUf? [JU-D 16-17] wfUvwgb-A mi‡eU A ̈vj‡Kvnj †eb‡Rv‡qU DËi: A ̈vj‡Kvnj e ̈vL ̈v: cÖvK...wZK Lv` ̈ msiÿK: Lv` ̈ jeY (NaCl), wf‡bMvi, wPwb, A ̈vj‡Kvnj, mwilvi †Zj, wewfbœ gmjv RvZxq e ̄‘ (†hgbÑ njy`, imyb BZ ̈vw`)| 27. †KvbwU cÖvK...wZK wcÖRvi‡fwUfm bq? [JU-A 15-16] mwilvi †Zj wPwbi `aeY GwmwUK GwmW †KvbwUB bq DËi: GwmwUK GwmW e ̈vL ̈v: K...wÎg dzW wcÖRvi‡fwUfm: †mvwWqvg †eb‡Rv‡qU, †eb‡RvwqK GwmW, mi‡eU jeY, mvBwUaK GwmW, GwmwUK GwmW, K ̈vjwmqvg †cÖvcvb‡qU, bvB‡UaU I bvBUavBU jeY, wfUvwgb-C, wfUvwgb-E, mvjdvBU jeY, BHA, BHT, EDTA BZ ̈vw`| weMZ mv‡j RU-G Avmv cÖkœvejx 1. Lv` ̈`ae ̈ cP‡b Ab ̈Zg mnvqK †KvbwU? [RU 18-19; BSMRSTU 16-17; PUST 16-17; BAU 18-19] SO2 N2O NO2 O2 DËi: O2 2. cÖvK...wZK Lv` ̈ msiÿK †KvbwU? [RU 18-19, 17-18; GST 23-24] NaCl NaNO3 Na2SO4 digvwjb DËi: NaCl 3. gy3 g~jK †kvlYKvix A ̈vw›U Aw·‡W›UÑ [RU-C 17-18] wfUvwgb-C wfUvwgb-E mvjdvBU jeY Uviwmqvwi weDUvBj nvBWaKzB‡bvb DËi: Uviwmqvwi weDUvBj nvBWaKzB‡bvb e ̈vL ̈v: gy3 g~jK †kvlYKvix A ̈vw›U-Aw·‡W›U: (i) weDUvB‡j‡UW nvBWaw· Gwbmj (BHA) (ii) weDUvB‡j‡UW nvBWaw· UjyBb (BHT) (iii) Uviwmqvwi weDUvBj nvBWaKzB‡bvb (TBHQ) (iv) †cÖvcvBj M ̈v‡jU (Propyl gallate) Aw·‡Rb †kvlYKvix A ̈vw›U-Aw·‡W›U: (i) wfUvwgb-C (ii) wfUvwgb-E (iii) mvjdvBU jeY 4. †KvbwU A ̈vw›U e ̈vK‡Uwiqvj G‡R›U bq? [RU 16-17] _vqwgb miweK GwmW †mvwWqvg †eb‡Rv‡qU mvBwUaK GwmW DËi: _vqwgb e ̈vL ̈v: A ̈vw›U e ̈vK‡Uwiqvj G‡R›Umg~n: (i) mvBwUaK GwmW (ii) miweK GwmW (iii) †mvwWqvg †eb‡Rv‡qU weMZ mv‡j CU-G Avmv cÖkœvejx 1. GbRvBg n‡jv GK cÖKviÑ [CU-A 20-21] †cÖvwUb Kv‡e©vnvB‡WaU wfUvwgb †Kv‡bvwUB bq DËi: †cÖvwUb e ̈vL ̈v: GbRvBg ev Dr‡mPK n‡”Q GK cÖKvi •Re AbyNUK| MVbMZfv‡e GwU †cÖvwUb RvZxq c`v_©| 2. Lv‡` ̈ Aby‡gvw`Z wcÖRvi‡fwUf mg~‡ni g‡a ̈ e ̈eüZ A ̈vw›U Aw·‡W›U ̧‡jv evqy Øviv Lv‡` ̈iÑ [CU-A 15-16] A¤øZ¡ e„w× K‡i RviY Z¡ivwš^Z K‡i weRviY †iva K‡i weRviY Z¡ivwš^Z K‡i RviY †iva K‡i DËi: RviY †iva K‡i e ̈vL ̈v: A ̈vw›U Aw·‡W›U A_© RviY †ivaK| A ̈vw›U Aw·‡W›Umg~n evqygÛ‡ji O2 Øviv Pwe© I wjwcW RvZxq Lv‡` ̈i RviY wμqvq evav m„wó Kivi gva ̈‡g Lv‡` ̈i cPb †iva K‡i| 3. wb‡Pi †Kvb ivmvqwbK c`v_©wUi wcÖRvi‡fwUf wn‡m‡e e ̈envi wbwl× Av‡Q? [CU 15-16] †eb‡RvwqK GwmW †eb‡Rv‡qU jeY wf‡bMvi K ̈vjwmqvg Kve©vBW DËi: K ̈vjwmqvg Kve©vBW e ̈vL ̈v: †eb‡RvwqK GwmW, †eb‡Rv‡qU jeY, wf‡bMvi wbivc` dzW wcÖRvi‡fwUfm wn‡m‡e Aby‡gvw`Z| wcÖRvi‡fwUfm wn‡m‡e K ̈vjwmqvg Kve©vBW (CaC2) ̧uovi `xN©‡gqvw` e ̈env‡i gvbe‡`‡n bvbv RwUj †ivM †`Lv †`q| ZvB Lv` ̈`ae ̈ msiÿ‡Y CaC2 e ̈envi wbwl×|