Chemistry ENGLISH Tamil(a)

8/12/2019 Chemistry ENGLISH Tamil(a)

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CHEMISTRY

1. mNahlgh/h;k; Nrhjidf;F cl;gLk; Nrh;kk;

Compound which undergoes iodoform test is

a) 1-ngd;ldhy; pentanolb) 2-ngd;lNdhd; 2-pentanone

c) 3-ngd;lNdhd; 3-pentanone

d) ngd;lNdy pentanal.

2. tpy;ypak;rd; njhFj;jy; Kiwapy; il-vj;jpy;-


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a) 2-"g;gdhy; 2-propanol

b) 2-ngd;lNdhd; 2-pentanone

c) 1-gpal;ldhy; %-butanol

d) 2-gpal;ldhy;. 2-butanol

. vj;jpypd; ilraidil mkpyj;ij gad;gLj;jp *#"hw;gFj;jhy; fpilg;g,

&thylene dicyanide on hydrolysis using acid gi"es

a) %f;rhypf; mkpyk; !alic acid

b) rf;rpdpf; mkpyk; (uccinic acid

c) m4g;gpf; mkpyk; dipic acid

d)N"hg;gpahdpf; mkpyk; *ropionic acid.

5. /g;n"(;fy; FiwghL c$;$ g4f(;f$py; vjph;kpd; madpapd; c!t$6

The si+e of the anion in ,ren#el defect crystal is

a) N*h;kpd; madpia tpl nghpajhf 7!f;Fk; larger than the cation

b) N*h;kpd; madpia tpl rpwpajhf 7!f;Fk; smaller than the cation

c) N*h;kpd; madpapd; m$tpw;F rkkhf 7!f;Fk; eual in si+e

with cation

d) 7"8;Lk; nghpa m$thf 7!f;Fk;. both are larger in si+e.

9. ! *#h;kk; nfhjpf;Fk; Ngh,

When a liuid boils there is

a) vd;l;N"hgp ca!fpw, an increase in entropy

b) vd;l;N"hgp Fiwfpw, a decrease in entropy

c)%tpahjypd; ntg;gk; ca!fpw, an increase in heat of "apori+ationd) fl;4yh %w;wy; mjpfhpf;fpd;w,. an increase in free eneregy


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:. fpg;&; fl;4yh %w;wypy; w;gLk; khw;wk;

Change in ibbs free energy is gi"en by

a 01T( b) 01-T(

c) 01T( d 01/T(

9. Ngh; Kiwapy; mk;Nkhdpah c!thjy; 4444*piyapy;

mjpfhpf;Fk;.

n the 1aber process the yield of ammonia is greater

a) mjpf m=j;jk; at high pressure

b) Fiw*;j m=j;jk; at low pressurec) cah; ntg;g*piyapy; at high temperature

d)tpidaf;fp 7y;yhj Ngh,. in absence of catalyst.

1>. vyf;l;"hdpd;


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a) Fiwfpw, decreases

b) mjpfhpf;fpd;w, increases

c) v*;jtpj khw;wKk; 7y;iy no change

d)7it midj;,k;. all of these

13. gpd;t!tdtw;0$; v, vjph; %f;&p'Ndw;w *piyia kl;Lk;

ngw;wp!f;Fk;

Which of the following shows negati"e o!idation state only$

a) 6r b) , c) Cl d).

1. FN"hkpaj;jpd; nt$pf;Al;4d; vyf;l;"hd; mikg;

The outer electronic configuration of chromium is

a) 3d 98s : b) 3d ;8s % c) 3d84s2 d) 3d34s24p 1.

15. i*l;N"h %f;Nfdp@$;$ =n,f$;)

c) =n / 71 8Cl d) =n / 7a1.

15. f#+;f8;ltw;wpy; v, Btpi8a i*l;N"h Nrh;kk;

The tertiary nitro compound is

a) 2-i*l;N"h "g;Ngd; 2-nitropropane

b) 1-i*l;N"h "g;Ngd; %-nitropropane

c)1-i*l;N"h-2C 2-il nkj;jpy; "g;Ngd; %-nitro-2 2-dimethyl propaned)2-i*l;N"h-2-nkj;jpy; "g;Ngd;. 2-nitro-2-methyl propane


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19. f#+;f;f8;ltw;wpy; v, ngd;r#d; i*l;N"h w;w tpidapy; tpid

7ilg;ngh!$hFk;

The intermediate formed in the nitration of ben+ene is

a) mh;h#dpak; madp rrenium ion

b) fhh;Ngdpahd; Carbanion

c) %f;N&hdpak; madp !onium ion

d) i*l;i"l; madp 7itrite ion.

1:. Df;N"hrpd; vjph;D+w;rp khw;wk; vd;g,

n"ersion of sucrose refers to

a) Df;N"hD w;wkiljy; o!idation of sucrose

b) Df;N"hD Lf;fk; miljy; reduction of sucrose

;c) Df;N"hDC F)NfhDC kw;0k; /g;"f;Nlhrhf rpijjy hydrolysis of

sucrose to glucose and fructose

d) Df;N"hD gyg4ahjy; polymerisation of sucrose.

1E. ! ilngg;il4y; 7y;yhj,

dipeptide does not ha"e

a) 7"8;L ngg;ilL myFf$; two peptide units

b) 7"8;L mkpNdh mkpy gFjpf$; portions of two amino acids

c) ! mkpNlh njhFjp an amido group

d) cg; Nghd;wnjh! mikg; salt li#e structure.

2>. tpidNtfr; rkd;ghl;4y; c$;$ nrwp6f$pd; mLf;Ff$pd; ALjy;

The sum of the powers of the concentration terms that occur in the rate euation is called

a) Byf;A0 v8; molecularity

b) tpidtif order

c) tpidNtfk; rate


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d) tpidNtf rate constant.

21. 4d;lhy; tpi$tpw;F cl;glhj,

The phenomenon of Tyndall effect is not obser"ed in

a) ghy;kk; emulsion

b) A+;k fi"ry; colloidal solution

c) nka; fi"ry; true solution

d) njh(;fy suspension .

22. 4fhd; ?5eacon Kiwapy; FN$hhpd; jahhpj;jypy;

tpidNtfkhw;wpahf nray;gLt,

Catalyst used in 5eacon's method of manufacture of chlorine is

a) 7 -b) CuC 2 c) ,e 2 ? 3 d) 7i.

23. mh;'p"hy; vd;g,

rgyrol is

a) rpy;th; A+;kk; colloidal sil"er

b) %d;4kdp A+;kk; colloidal antimony

c)Nfhy;L A+;kk; colloidal gold

d) nkf;d#rpah ghy;kk; mil# of magnesia.

2. rpy;th; *h8aj;jpyp!*;, rpy;ti"g; ng0jypy; Kjypy; *h8aj;,ld;

Nrh;f;fg;gLk; f"8p

The reagent which is added first in the separation of sil"er from sil"er coin is

a) mlh; ry;/g;ahpf; mkpyk; conc. sulphuric acid

b) mlh; il;N"hFN$hhpf; mkpyk; conc. hydrochloric acid

;c) mlh; i*l;hpf; mkpyk conc. nitric acid

;d) 7"h' jp"htk ua regia.

25. 4444%f;N&h N*h; madpfi$ c!thf;Ffpw,.


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------------------------- ,orms o!ocations

a) yh*;jidLf$; @anthamide

b) %f;4idLf$; ctinides

c) cahpa thf;f$; 7oble gases

d) fh" cNyhf(;f$;. l#ali metals

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Chemistry ENGLISH Tamil(a)