jlk;u fokku (313...ch3nh2, (ch3)3n, (ch3)2 nh arrange the following in increasing order of their...

32 jlk;u foKku (Chemistry)

jlk;u foKku(Chemistry)

(313)f'k{kd vafdr ewY;kadu i=k

Tutor Marked Assignmentdqy vad% 20

Max. Marks: 20

fVIi.kh% (i) lHkh iz'uksa ds mÙkj nsus vfuok;Z gSaA izR;sd iz'u ds vad mlds lkeus fn, x, gSaANote: All questions are compulsory. The marks for each question are given at the against each.

(ii) mÙkj iqfLrdk ds izFke i"B ij Åij dh vksj viuk uke] vuqØekad] v/;;u dsUnz dk uke]fo"k; vkfn Li"V 'kCnksa esa fyf[k,AWrite your name, enrolment number, AI name and subject etc. on the top of the first page of theanswer sheet.

1. fuEufyf[kr esa ls fdlh ,d iz'u dk mÙkj yxHkx 40&60 'kCnksa esa nhft;s % 2

Answer any one of the following questions in about 40-60 words :

(a) Xywdkst C6 H12O6 ¼eksyj nzO;eku 180 xzke eksy½ dh 18 xzke ek=k dks ,d crZu es 1 kg ty esa?kkssyk x;k gSA ;g fdl rki ij mcyus yxsxkA Kb ty ds fy, 0.52 kg eksy&1 'kq) ty dkDoFkukad 373-15 K gSA ¼ikB&9 ns[ksa½18 g glucose, C6 Hl2O6 (Molar mass = 180 g mol) is dissolved in 1 kg of water in a sauce pan. At whattemperature will this solution boil (kb for water = 0.52K kg mol-1 B.P of pure water = 373.1 K)

(Ref. Lesson—9)

(b) 280 xzke dh fØdsV dh xsan dks vxj 150 fd- eh- izfr?kUVs ds osx ls Qsdk tkrk gS rks mldhnh&czkxyh rjaxnS/;Z dk ifjdyu dhft,A ¼ikB&3 ns[ksa½Calculate the de-Broglie Wave length associated with a cricket ball weighing 280 g thrown at the speedof 150 km/hr (Ref. Lesson—3)

(c) ;|fi ukbVªkstu dh rqyuk es vkWDlhtu dk vkdkj NksVk gksrk gS ysfdu vkWDlhtu dh rqyuk esaukbVªkstu dh izFke vk;ue ,uFkSYih mPp gksrh gS D;ksa\ ¼ikB&4 ns[ksa½Although size of oxygen is small as compared to nitrogen but the first ionisation enthalpy of nitrogen ishigher than oxygen why? (Ref. Lesson—4)

(d) (i) He2 v.kq cusxk ;k ugha MO fl)kar ds vk/kkj ij o.kZu dhft,A ¼ikB&5 ns[ksa½He2 molecule will exist or not. Explain on the basis of M.O. theory?

(ii) O2_ vkSj O22+ esa vkca/k dze vkSj pqEcdh; O;ogkj dk o.kZu dhft,A ¼ikB&5 ns[ksa½

Explain the bond order and magnetic behaviour of 2O and 22O (Ref. Lesson—5)

(iii) VSEPR fl)kar ds vk/kkj ij ClF3 vkSj SO2 dh vkÑfr vkSj ladj.k crkb,A¼ikB&5 ns[ksa½

33jlk;u foKku (Chemistry)

On the basis of VSEPR theory predict the shape and hybridisation of ClF3and SO2(Ref. Lesson—5)



(a) i`"B ruko vkSj ;kurk dks rkieku fdl izdkj izHkkfor djrk gSA ¼ikB&7 ns[ksa½How does the temperature effect surface tension and visclocity. (Ref. Lesson—7)

(b) fuEufyf[kr lSy dk 298 K ij emf dh x.kuk dhft, Fe (s) / Fe 2+ (0.001M) || H+ (IM)/H2g)(lbar), Pt (S) tc Fe 2+ fd dk emf = + 0.44V fn;k gqvk gSA ¼ikB&15 ns[ksa½Calculate the emf of the following cell at 298 K (Ref. Lesson—15)

(S) Fe (s) / Fe 2+ (0.001M) || H+ (IM)/H2g) (lbar), Pt (S) (Given E0 Fe 2+ = + 0.44V)

(c) ;g ekurs gq, fd K2SO4 iw.kZr;k ?kqfyr ,oa foHkkftr gS] 250C ij 2 yhVj ty esa 2.5X10-2 xzkeK2SO4 ?kksyus ij izkIr gq, ?kksy dk ijklj.kh nkc ifjdfyr dhft,A ¼ikB& 9 ns[ksa½(R = 0.02, L atom K-1 mol-1) K2SO4 dk vk.kfod nzO;eku 174 g eksy&1 (Ref. Lesson—9)

Determine the Osmotic Pressure of a solution prepared by dissolving 2.5x10-2 g of K2SO4 in 1Ltr.water at 250C, assuming that it is completely dissociated.

(R = 0.082 1L atm K-1 mol-1, Molar mass of K2SO4 = 174 g mol-1)

(d) izFke dksfV dh vfHkfØ;k ds fy, n'kkZb, fd 90% fØ;k iwjh gksus esa yxk le; 99% fØ;k iwjh gksusds le; dk nqxuk gksrk gSA ¼ikB&16 ns[ksa½fdlh vfHkfØ;k dk nj ¼osx½fu;rkad ‘K’ mlds rki T ds cnyus ds lkFk fuEu lehdj.k vuqlkjcnyrk gSAlog K = log A - Ea/2.303 R 1/T

tcfd Ea vfHkfdz;k dh lfØ;u ÅtkZ gSA tc log K dk 1/T ds izfr xzkQ [khapk tkrk gS rks &4250K <ky dh lh/kh js[kk izkIr gksrh gSA vfHkfdz;k ds fy, Ea dk ifjdyu dhft,

¼ikB&16 ns[ksa½¼R = 8.314 JK-1mol-1 eksy½For a first order reaction, show that time required for 99% completion is twice the time required for thecompletion of 90% of reaction. (Ref. Lesson—16)

Rate constant ‘K’ of a reaction varies with temperature ‘T’ according to the equation:

where Ea is the activation energy. When a graph is plotted for K Vs 1/T, a straight line with a slope of -4 250K is obtained. Calculate ‘Ea’ for the reaction.

(R = 8.314 Jk-1 mol-1)

1log log2.303

EaK AR T




(a) vip;u ls igys lYQkbM v;Ld dk HktZu D;ksa fd;k tkrk gS\ ¼ikB& 18 ns[ksa½Why is sulphide ore roasted before reduction (Ref. Lesson—18)

(b) FkekZbV izdze dk o.kZu dhft, ¼ikB& 21 ns[ksa½CCl4 dk ty vi?kVu ugha gksrk gS ysfdu SiCl4 dk ty vi?kVu gks tkrk gS D;ksa\fUkEufyf[kr ladqyksa ds IUPAC ds vuqlkj uke fyf[k,% ¼ikB& 24 ns[ksa½(i) [Co (NH3)5 Cl]SO4

(ii) Na3 [Fe (CN)6]

ukfHkd jkxh izfrLFkkiu vfHkfdz;kvksa ds fy;s DyksjksoSUthu cgqr de fdz;k'khy gSA blds fy;s nksdkj.k fyf[k,AExplain thermite process (Ref. Lesson—21)

CCl4 is not hydrolysed by water but SiCl4 is hydrolysed why?

Give IUPAC name of these complexes (Ref. Lesson—24)

(i) [Co (NH3)5 Cl]SO4

(ii) Na3 [Fe (CN)6]

Chlorobenzene is extremely less reactive towards a nucleophilic substitution reaction. Give two reasonsfor the same.

(c) vki dSls ifjofrZr djsaxs\ ¼ikB& 28 ns[ksa½(i) izksihu dks izksisu&2&vksy esa\(ii) fQuksy dks 2]4]6 VªkbZukbVªksQhuksy esa \How will you convert (Ref. Lesson—28)

(i) Propene to propane 2-ol

(ii) Phenol to 2,4,6 trinitrophenol

(d) D;k gksrk gS tc(i) PCl3 dks xeZ fd;k tkrk gSA ¼ikB& 22 ns[ksa½(i) H3BO3 dks xeZ fd;k tkrk gSA ¼ikB& 21 ns[ksa½What happens when

(i) PCl3 is heated (Ref. Lesson—22)

(ii) H3BO3 is heated (Ref. Lesson—21)

4. fuEufyf[kr esa ls fdlh ,d dk mÙkj yxHkx 100-150 'kCnksa esa nhft,A 4Answer any one out of the following four questions in about 100 to 150 words(a) (i) fuEufyf[kr inkFkks± dks tyh; foy;uksa es muds c<+rs {kkjh; izoyrk ds vuqlkj O;ofLFkr

dhft,A vius mRrj dk vkSfpR; nhft,A ¼ikB& 30 ns[ksa½


CH3NH2, (CH3)3N, (CH3)2 NH

Arrange the following in increasing order of their basic strength in aqueous solution. Justify youranswer. (Ref. Lesson—30)

CH3NH2, (CH3)3N, (CH3)2NH

(ii) fuEufyf[kr vfHkfdz;kvksa dk o.kZu dhft, ¼ikB& 29 ,oa 30 ns[ksa½Explain the following reactions (Ref. Lesson—29 & 30)

(i) dSuhtkjks vfHkfØ;k (ii) gkQesu ozksekekbM vfHkfdz;kCannizaro reaction (ii) Hofmann bromamide reaction

(b) (i) fuEu vfHkfdz;kvksa esa A, B vkSj C dh ljapuk;sa fyf[k, ¼ikB& 30 ns[ksa½Give the structures of A, B and C in the following reaction (Ref. Lesson—30)

(1) 6 5 2 2 3 / C H N Cl Cu CN A H O H B NH C

(2) 6 5 2 2 3 / / / C H NO Sn HCl A NaNO HCl B H O H C

(ii) fuEufyf[kr jklk;fud lHkhdj.kksa dks iw.kZ ,oa larqfyr dhft,A ¼ikB& 23 ns[ksa½Complete the following Chemical equations and balance (Ref. Lesson—23)

(i) Cr2O72- + Fe2+ + H+ —————>

(ii) CrO42- + H+ ——————>

(iii) MnO4- + C2O42- + H+ —————>

Or

fuEufyf[kr vfHkfdzvk;ksa dks iw.kZ dhft,% ¼ikB& 29 ns[ksa½Complete the following reactions : (Ref. Lesson—29)

(i) O 2 Conc KOHH C H

(ii) CH3 COOH 2Br /P

(iii) Ph CHO 3 2 4HNO /H SO273-283 K

(c) (i) oxks± vkSj vkorksZ esa ijek.kq vkdkj ds ifjorZu dk o.kZu dhft,A ¼ikB& 4 ns[ksa½Explain the variations of atomic size in groups and periods. (Ref. Lesson—4)

(ii) fuEufyf[kr dks ifjHkkf"kr dhft,ADefine the following

(1) bysDVªku xzg.k ,FkSYihA ¼ikB& 4 ns[ksa½Electron gain enthalpy (Ref. Lesson—4)


(2) oS|qr _.kkRedrkAElectronegativity

(d) (i) fuEufyf[kr dks muds c<+rs gq, vk;fud vkdkj ds :Ik esa O;ofLFkr dhft,¼ikB& 4 ns[ksa½

Arrange the following in order of increasing ionic size (Ref. Lesson—4)

3 2 2 3 , , , , N O F Na Mg Al

(ii) nzo jkxh vkSj nzo fojkxh dksyk;M D;k gksrs gS\ buesa ls dkSu ls lksy dk LdUnu FkksM+s ls fo|qrvi?kV; Mkyus ij lqxerk ls gks ldrk gSA ¼ikB& 10 ns[ksa½ What are Lyophilic and Lyophobic colloids? Which of these sol can be easily coagulated on theaddition of small amount of electrolytes?

HkkSfrd vf/k'kks"k.k vkSj jklk;fud vf/k'kks"k.k ds varj dks fuEu lanHkks± esa fyf[k,¼ikB& 10 ns[ksa½

Write the differences between physiosorption and chemosorption with respect to the following

(Ref. Lesson—10)

(i) fof'k"Vrk (ii) rkieku fuHkZjrk (iii) mRdze.kh;rk (iv) ,UFkkYih ifjorZu¼ikB& 17 ns[ksa½

(i) Specificity (ii) Temperature dependance (iii) Reversibility and (iv) Enthalpy change

4. fuEufyf[kr esa ls fdlh ,d dk mÙkj yxHkx 100-150 'kCnksa esa nhft,A 4

Answer any one out of the following four questions in about 100 to 150 words

fodYi vOptional Module A

(i) QksVksdSehdy dksgjk D;k gksrk gS\ ;g thou dks fdl izdkj izHkkfor djrk gS\¼ikB& 33 ns[ksa½

What do you mean by photochemical Smog ? How does it effect the life? (Ref. Lesson—33)

(ii) vEy o"kkZ D;k gksrh gS\ blds gkfudkjd izHkko D;k gksrs gS\ ¼ikB& 33 ns[ksa½What is acid rain? Explain its harmful effects. (Ref. Lesson—33)

(iii) xzhu gkml izHkko D;k gksrk gS\ blds thou ij D;k izHkko gksrs gS\ ¼ikB& 33 ns[ksa½What is green house effect? What are its effects on one's life? (Ref. Lesson—33)

fodYi cOptional Module B

(a) fuEu cgqydksa ds ,dydksa ds uke vkSj ljpuk,¡ fyf[k;s ¼ikB& 33 ns[ksa½Write the names and structures of the monomers of the following polymers: (Ref. Lesson—36)

(i) cquk&,lBuna - S


(ii) fu;kWfizuNeoprene

(b) Xysftax ls vki D;k le>rs gSa\ dqN fpduh feVVh mRiknksa dks Xysftr D;ksa fd;k tkrk gS\¼ikB& 36 ns[ksa½

What do you understand by the term glazing? Why are certain clay products glazed?

(Ref. Lesson—36)

(c) vkS"k/kh vkSj Hks"kt esa D;k varj gS\ vkS"k/kh ds dksbZ N% izdkj mnkgj.k ,ao vuqiz;ksx nsrs gq, fyf[k,A¼ikB& 35 ns[ksa½

What is the difference between drug and medicine? Write any six classes of medicines with examples anduses. (Ref. Lesson—35)

6. uhps nh xbZ pkj ifj;kstukvksa dh lwph esa ls dksbZ ,d ifj;kstuk 500 'kCnksa esa rS;kj dhft, 6Make any one project out of the four given below in 500 words.

(a) vius iM+ksl dh jlk;u foKku dh iz;ksx'kkyk esa tkb, vkSj ¼ikB& 1&36 ns[ksa½(i) ,Ydksgyksa Qhuksy vkSj dkoksZfDlfyd vEyksa dh igpku dhft,A(ii) CH3OH ls C2H5OH dks igpkfu,A(iii) buesa ls dkSu lk gkfudkjd gksrk gSA(iv) OH vfHky{kdh; lewg j[kus okys ,yhQSfVd vkSj ,sjkseSfVd esa varj dSls djksxsA(v) ,d ,Ydksgy ds vkDlhdj.k gksus ls CH3COOH curk gS ml ,Ydksgy dk uke crkb,AVisit the chemistry laboratory of a nearby school and

(i) Identify alcohols, phenols, carboxylic acid etc.

(ii) Distinguish between CH3-CHO and C2H5OH

(iii) Which one of these is harmful

(iv) What is the difference between alcohol and aromatic compounds containing - OH group

(v) Oxidation of one of the alocohal CH3COH is formed. Name that alcohol

(b) vius iM+ksl dh ,d iz;ksx'kkyk esa tkb, vkSj de ls de 10 uewus ,d=k dhft,A(i) vEyksa {kkjksa vkSj yo.kksa dks lwphc) dhft,A(ii) izcy ,ao nqcZy vEyksa vkSj {kkjksa dks lwphc) dhft,A(iii) ml vEy dh igpku dhft, ftldk mi;ksx ?kjks eas lk/kkj.k mi;ksx esa gksrk gSA(iv) ml {kkj dh igpku dhft, tks fd /kkou lksM+k esa mi;ksx gksrk gSA(v) ml {kkj dh igpku dhft, tks fd osfdax ikÅMj esa mi;ksx gksrk gSAVisit Chemistry laboratory of your AI and collect chemical at least 10 samples.

(i) Prepare the list of acids, bases & salts


(ii) Prepare the list of strong and weak acid and bases

(iii) Indentify the acid which is generally used in our house

(iv) Identify base used as washing soda

(v) Identify base used as baking powder

(c) iM+ksl dh dckM+h dh nqdku ij tkb, vkSj de ls de 10 uewus ,d=k dhft,(i) /kkrqvksa vkSj v/kkrqvksa dks lwphc) dhft,A(ii) IykfLVd vkSj jcM+ dks lwphc) dhft,A(iii) iznw"k.k ds fy, mRrjnkbZ phtksa dks lwphc) dhft,A(iv) iznw"k.k jksdus ds fy, vki D;k lko/kkuh cjrsaxsAVisit a nearby scrap dealer shop and collect at least 10 samples and

(i) Prepare the list of metals, non-metals

(ii) Prepare the list of plastic, rubber etc.

(iii) Prepare the list of articles responsible for pollution

(iv) What precaution will you take to prevent pollution

(v) Prepare the list of biodegradable and non-biodegradable items.

(d) vius iM+ksl dh vkS"kf/k dh nqdku ij tkb,A de ls de 20 fofHkUu vkS"kf/k;ksa dks lwphc) dhft,vkSj mudks fuEu esa oxhZdj.k dhft,(i) Rkki fojks/kh(ii) jksxk.kquk'kd(iii) ihM+kuk'kd(iv) izzfrvEy(v) xHkZfujks/khVisit a nearby medical shop. Make a list of at least twenty different medicines and classify them into

(i) Antipyretics

(ii) Disinfectants

(iii) Analgesics

(iv) Antacids

(v) Contraceptives

jlk;u fokku (313...ch3nh2, (ch3)3n, (ch3)2 nh arrange the following in increasing order of their...

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