mcq no 6471-6520

9
1 CHEMISTRY – UJITH ANJANA HEMACHANDRA 01. tla;rd uQ,øjHl ia lkaO l%udxlh 2x + 10 fõ' x hkq mrudKql l%udxlh fõ' fuys wvx.= kshqfg%dak .Kk jkafka " 1) 1 2) 2x 3) 10 4) x+10 5) x+5 02. oaú O%ej>Q¾Kh Y+kH jk wkql m%fNa oh l=ulao@ 1) H 2 O 2) HCl 3) NH 3 4) C 6 H 6 5) CHCl 3 03. X ys laf,darhsvh 1.5276g ;=< x 0.9367 g wvx.= fõ' tu laf,darhs vh MgCl 2 g wkqrEm fõ' X ys id'm'ia' jkafka " 1) 112.5 2) 96.30 3) 62.5 4) 108.6 5) 66.25 04. CH 4 (g) → C (g) + 4H (g) = 1440 KJ mol -1 C 2 H 6 (g) → 2C (g) + 6H (g) = 2500 KJ mol -1 by; iólrK j,g wkqj C -C nkaOkhl nka Ok ú>gk tka;e,ams w.h jkafka " KJmol -1 1) 360 2) 420 3) 430 4) 315 5) 340 05. S iys; ixfhda.hl 0.32g la BaCl 2 iuÕ m%;sl%shd jQ miq ,efnk wjlafIamfha ialka Oh 0.932g úh' ixfhda.fha we;s S m% ;sY;h jkafka " 1) 10% 2) 20% 3) 30% 4) 40.2% 5) iaÒrj lsj fkdyel' 06. my; i|yka ;=uk tflys wmlsrK j, m%n,u fõo@ 1) CH 4 2) CO 2 3) F 2 4) N 2 5) Br 2 ld,h ld oukakdf.a wkd.;h ld,h úiska ld oukq ,efí''' BATTLE FIELD MCQ PAPER 20 iïmQ¾K úIh ks¾foa Yhu wdjrKh jk mßÈ ieliQ Wiia uÜgfï MCQ 50 la fuys wka;¾.; fõ' mx;s meje;afjk ld,fhka miq ñks;a;= 30 la .=rejrhd mka;sh ;=< isák w;r tys§ Tng wjYH ´kEu isoaOdka; fldgila kej; wid oek .; yel' MCQ NO 6471-6520 01. tla;rd uQ,øjHl ia lkaO l%udxlh 2x + 10 fõ' x hkq mrudKql l%udxlh fõ' fuys wvx.= kshqfg%dak .Kk jkafka " 1) 1 2) 2x 3) 10 4) x+10 5) x+5 02. oaú O%ej>Q¾Kh Y+kH jk wkql m%fNa oh l=ulao@ 1) H 2 O 2) HCl 3) NH 3 4) C 6 H 6 5) CHCl 3 03. X ys laf,darhsvh 1.5276g ;=< x 0.9367 g wvx.= fõ' tu laf,darhs vh MgCl 2 g wkqrEm fõ' X ys id'm'ia' jkafka " 1) 112.5 2) 96.30 3) 62.5 4) 108.6 5) 66.25 04. CH 4 (g) → C (g) + 4H (g) = 1440 KJ mol -1 C 2 H 6 (g) → 2C (g) + 6H (g) = 2500 KJ mol -1 by; iólrK j,g wkqj C -C nkaOkhl nka Ok ú>gk tka;e,ams w.h jkafka " KJmol -1 1) 360 2) 420 3) 430 4) 315 5) 340 05. S iys; ixfhda.hl 0.32g la BaCl 2 iuÕ m%;sl%shd jQ miq ,efnk wjlafIamfha ialka Oh 0.932g úh' ixfhda.fha we;s S m% ;sY;h jkafka " 1) 10% 2) 20% 3) 30% 4) 40.2% 5) iaÒrj lsj fkdyel' 06. my; i|yka ;=uk tflys wmlsrK j, m%n,u fõo@ 1) CH 4 2) CO 2 3) F 2 4) N 2 5) Br 2 07. PF 2 Cl 3 hk wKqjg wo<j mej;sh yels úúO wjldYSh iliaùu ixLHdj " 1) 01 2) 02 3) 03 4) 04 5) 05 08. M keue;s f,dayh idok *a¨jrhsvfha nr wkqj 14.96% la *a¨fjdÍka ;sfí' fï f,dayh idok fl%dafïgfha§ M mrudKq 02 la iuÕ fl%da ñhï mrudKq 01 la mj;S' M ys ixhqc;djh iy id'm'ia' ms<sfj,ska i|yka jkafka my; l= ulo@ (F- 19)

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Page 1: MCQ NO 6471-6520

1 CHEMISTRY – UJITH ANJANA HEMACHANDRA

01. tla;rd uQ,øjHl ialkaO l%udxlh 2x + 10 fõ' x hkq mrudKql l%udxlh fõ' fuys wvx.= kshqfg%dak .Kk jkafka "

1) x 1) 1 2) 2x 3) 10 4) x+10 5) x+5

02. oaú O%ej>Q¾Kh Y+kH jk wkql m%fNaoh l=ulao@ 1) H2O 2) HCl 3) NH3 4) C6H6 5) CHCl3

03. X ys laf,darhsvh 1.5276g ;=< x 0.9367 g wvx.= fõ' tu laf,darhsvh MgCl2 g wkqrEm fõ' X ys id'm'ia' jkafka "

1) 112.5 2) 96.30 3) 62.5 4) 108.6 5) 66.25

04. CH4(g) → C(g)+ 4H(g) = 1440 KJ mol-1

C2H6(g) → 2C(g) + 6H(g) = 2500 KJ mol-1

by; iólrK j,g wkqj C -C nkaOkhl nkaOk ú>gk tka;e,ams w.h jkafka " KJmol-1

1) 360 2) 420 3) 430 4) 315 5) 340

05. S iys; ixfhda.hl 0.32g la BaCl2iuÕ m%;sl%shd jQ miq ,efnk wjlafIamfha ialkaOh 0.932g

úh' ixfhda.fha we;s S m%;sY;h jkafka " 1) 10% 2) 20% 3) 30% 4) 40.2% 5) iaÒrj lsj fkdyel'

06. my; i|yka ;=uk tflys wmlsrK j, m%n,u fõo@ 1) CH4 2) CO2 3) F2 4) N2 5) Br2

ld,h ld oukakdf.a wkd.;h ld,h úiska ld oukq ,efí'''

BATTLE FIELD MCQ PAPER 20

iïmQ¾K úIh ks¾foaYhu wdjrKh jk mßÈ ieliQ Wiia uÜgfï MCQ 50 la fuys

wka;¾.; fõ'

mx;s meje;afjk ld,fhka miq ñks;a;= 30 la .=rejrhd mka;sh ;=< isák w;r tys§ Tng

wjYH ´kEu isoaOdka; fldgila kej; wid oek .; yel'

MCQ NO 6471-6520 01. tla;rd uQ,øjHl ialkaO l%udxlh 2x + 10 fõ' x hkq mrudKql l%udxlh fõ' fuys wvx.=

kshqfg%dak .Kk jkafka " 1) x 1) 1 2) 2x 3) 10 4) x+10 5) x+5

02. oaú O%ej>Q¾Kh Y+kH jk wkql m%fNaoh l=ulao@ 1) H2O 2) HCl 3) NH3 4) C6H6 5) CHCl3

03. X ys laf,darhsvh 1.5276g ;=< x 0.9367 g wvx.= fõ' tu laf,darhsvh MgCl2 g wkqrEm fõ' X ys id'm'ia' jkafka "

1) 112.5 2) 96.30 3) 62.5 4) 108.6 5) 66.25

04. CH4(g) → C(g)+ 4H(g) = 1440 KJ mol

-1

C2H6(g) → 2C(g) + 6H(g) = 2500 KJ mol-1

by; iólrK j,g wkqj C -C nkaOkhl nkaOk ú>gk tka;e,ams w.h jkafka " KJmol-1

1) 360 2) 420 3) 430 4) 315 5) 340

05. S iys; ixfhda.hl 0.32g la BaCl2iuÕ m%;sl%shd jQ miq ,efnk wjlafIamfha ialkaOh 0.932g

úh' ixfhda.fha we;s S m%;sY;h jkafka " 1) 10% 2) 20% 3) 30% 4) 40.2% 5) iaÒrj lsj fkdyel'

06. my; i|yka ;=uk tflys wmlsrK j, m%n,u fõo@ 1) CH4 2) CO2 3) F2 4) N2 5) Br2

07. PF2Cl3 hk wKqjg wo<j mej;sh yels úúO wjldYSh iliaùu ixLHdj "

1) 01 2) 02 3) 03 4) 04 5) 05

08. M keue;s f,dayh idok *a¨jrhsvfha nr wkqj 14.96% la *a¨fjdÍka ;sfí' fï f,dayh idok fl%dafïgfha§ M mrudKq 02 la iuÕ fl%dañhï mrudKq 01 la mj;S' M ys ixhqc;djh iy id'm'ia' ms<sfj,ska i|yka jkafka my; l=ulo@ (F- 19)

Page 2: MCQ NO 6471-6520

2 CHEMISTRY– UJITH ANJANA HEMACHANDRA

07. PF2Cl3 hk wKqjg wo<j mej;sh yels úúO wjldYSh iliaùu ixLHdj "

1) 01 2) 02 3) 03 4) 04 5) 05

08. M keue;s f,dayh idok *a¨jrhsvfha nr wkqj 14.96% la *a¨fjdÍka ;sfí' fï f,dayh idok fl%dafïgfha§ M mrudKq 02 la iuÕ fl%dañhï mrudKq 01 la mj;S' M ys ixhqc;djh iy id'm'ia' ms<sfj,ska i|yka jkafka my; l=ulo@ (F- 19)

1) 2 iy 16 2) 2 iy 108 3) 1 iy 108 4) 1 iy 56 5) 1 iy 216

09. my; ixfhda.fha ksjerÈ IUPAC kduh ñka l=ulao@ CH2 CH3

| CH3 — CH = C — CH3

|

CH2 CHO

1) 2,3 - dimethyl -3-enal 2) 2,3 - dimethyl -3-en - l -al

3) 3 - ethyl -2- methylbut -3- enal 4) 3 - ethyl -2- methyl -3- buten -l-al

5) 3 - ethyl -2- methylbut -3- en -l-al

10. 2 105 Nm

-2 mSvkh hgf;a 0.2 dm

-3 jk Ndckhla ;=< lsishï mßmQ¾K jdhqjlska 0.02 mol wka;¾.; fõ' jdhq wKqj, j¾. uOHkh j, m%fõ.h 433 ms

-1 fõ kï jdhqfjys ialkaOh ñka l=ulao@

1) 2.0 g mol-1

2) 32.0 g mol-1

3) 44.0 g mol-1

4) 71.0 g mol-1

5) 17.0 g

mol-1

11. Na2O , K2O, MgO, Al2O3, SO3 hk Tlaihsv j, wdï,sl .=Kh jeäjk ms<sfj, ksjerÈ jkqfha "

1) Na2O < K2O < Al2O3 < MgO < SO3 2) K2O < Na2O < MgO < SO3 < Al2O3

3) SO3 < Al2O3 < MgO < K2O < Na2O 4) K2O < Na2O < MgO < Al2O3 < SO3

5) MgO < K2O < Na2O < Al2O3 < SO3

12. H nkaOkhl m%n,;dj úp,kh jk ksjerÈ ms<sfj, jkafka "

1) ClH …..Cl > NH ….. N > OH …..O >FH ….. F

Page 3: MCQ NO 6471-6520

3 CHEMISTRY– UJITH ANJANA HEMACHANDRA

2) ClH …..Cl < NH ….. N < OH …..O <FH ….. F

3) ClH …..Cl < NH ….. N > OH …..O >FH ….. F

4) ClH …..Cl < NH ….. N < OH …..O >FH ….. F

5) ClH …..Cl > NH ….. N > OH …..O <FH ….. F

13. Ba(OH)2(aq) iuÕ j¾K úm¾hdihla fyda wjlafIamhla ,nd fkdfokafka ñka ljrlao@ 1) K2CrO4(aq) 2) K2Cr2O7(aq) 3) Na2CO3(aq) 4) NH4NP3(aq) 5) Al2(SO4)3(aq)

14. X keue;s wldnksl ixfhda.h ;' H2SO4 ys iïmQ¾Kfhka ødjKh fjñka ÿUqre meye;s jdhqjla

,nd fohs' ñka ,efnk ødjKh myka is¿ mßlaIdfõ§ fld< meyehla we;s lrhs' X ùug jvd;au bv we;af;a fuys l=ulao@

1) BaBr2 2) Ba(NO2)2 3) Cu(NO3)2 4) CuBr2 5) Cu(NO2)2

15. 320C l we;s KOH ødjK 125 cm

3 l mßudjla iy 280C l we;s HNO3 ødjK 75cm

3 l mßudjla tlsfkl iuÕ ñY% lsÍfuka WodiSk lrk tka;e,amsh mÍlaIKd;aulj fiùug we;ehs is;kak' ldur WIaK;ajh 24

0C fõ kï fuu m%;sl%shdfõ wdrïNl WIaK;ajh f,i .; hq;= jkafka "

1) 240C 2) 28

0C 3) 30

0C 4) 30.5

0C 5) 32

0C

16. whkSlrK Yla;Skag wod< m%;sl%shd lsysmhla my; oelafõ' a) Na

+ (g) → Na

+2 (g) + e b) Cs

+ (g) → Cs

+2 (g) + e c) Al

+3 (g) → Al

+4 (g) + e

d) Mg2+

(g) → Mg3+

(g) + e fuu m%;sl%shd i|yd wjYH Yla;sh wdfrdayKh jk ms<Sfj, ksjerÈj oelafjkafka " 1) a < b < c < d 2) b < a < d < c 3) b < c < d < a

4) c < a < b < d 5) d < b < a < c

17. P4O10 c,h iuÕ m%;sl%shd lr ,nd fokafka " 1) H3PO3 2) H3PO3 +H3PO4 3) H3PO4 4) H3PO2 5) HPO3

18. mrudKq yßhgu myla tlu ;,hl we;af;a " 1) PCl5 2) SF4 3) BrF5 4) IF7 5)

19. ;d;a;aúl jdhQka i|yd jekav¾jd,a iólrKh ( ⁄ ) ( ) = nRT hkafkka fokq

,efí' ⁄ iy nb hk mo ms<sfj,ska l=uk fYdaOkhla fjkqfjka fh§ we;ao@

1) wka;¾ wKql n, iy wm%;Hia: .eg¿ i|yd h' 2) wka;¾ wKql n, iy wKq i;= mßudj fjkqfjks' 3) wka;¾ wKql úl¾Yk n, iy wKq i;= mßudj fjkqfjks' 4) mSvkh iy WIaK;ajh fjkqfjks' 5) wm%;Hia: .egqï iy wka;¾ wKql n, fjkqfjks'

20. iS;, ;kql NaOH ødjKhlA iuÕ Cl2 m%;sl%shd l< úg ,efnk M,fhys m%Odk jYfhka we;af;a

1) Cl

-(aq) + ClO

- (aq) 2) Cl

-(aq) + ClO

- 2(aq) 3) Cl

-(aq) + ClO

- 3(aq)

4) Cl-(aq) + ClO

- 4(aq) 5) ClO

-3(aq) + ClO

- 2(aq)

21. iïu; wjia:dfõ mj;sk uQ,øjH j,ska IF hk whksl >kh iE§fï§ isÿjk tka;e,ams úm¾hdih

fiùu i|yd my; i|yka l=ula jeo.;a fkdfõo@

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4 CHEMISTRY– UJITH ANJANA HEMACHANDRA

1) F2 j, nkaOk ú>gk tka;e,amsh 2) I j, bf,lafg%dak nkaOq;d tka;e,amsh 3) l2 j, mrudKql tka;e,amsh 4) F j, bf,lafg%dak nkaOq;d tka;e,amsh 5) l2 j, m<uqjk whkSlrK tka;e,amsh

22. fojk whkSlrK Yla;sh jeäjk ms<sfj, jkafka "

1) C < N < F < O 2) N < C < O < F 3) C < O < N < F

4) C < N < O < F 5) C < F < N < O

23. SrCrO4 ;' HNO3 ys ødjKh l< úg ødjKfha j¾Kh " 1) oï 2) fld< mdg 3) r;= mdg 4) ly mdg 5) ;eì,s mdg

24. AgCl c,fha Èh fjkjdg jvd c,Sh NH3 ;=< Èhfõ' óg fya;=j jkafka " 1) NH3 c,hg jvd fyd| ødjlhla ùu' 2) Ag

+ whk NH3 iuÕ m%;sl%shd lr ixlS¾K whkhla iE§u'

3) NH3 c,hg jvd m%n, wï,hla ùu' 4) NH3 c,hg oaúO%ej >Q¾Kh c,hg jvd wvqùu' 5) NH3 we;eï wjia:d j,§ wdï,sl .=K oelaùu'

25. my; l=ula r;a lsÍfuka khsg%cka vfhdlaihsâ ,nd.; fkdyelso@

1) KNO3 2) Pb(NO3)2 3) Cu(NO3)2 4) AgNO3 5) Mg(NO3)2

26. jdhq n,anhla ;=< N2 jdhq wKq 2.0 1021

la 7.57 103 Nm

-2 mSvkhla ;=< wvx.= fõ' n,anfha

mßudj 1 dm3 ls' fuu N2 wKq j, j¾. uOHkh uQ, m%fõ.h .Kkh lrkak'

1) 491.67ms

-1 2) 493.56ms

-1 3) 494.22ms

-1 4) 495.33ms

-1 5) 495.96ms

-

1

27. C6H6 j, ;dmdxlfha§ (353K) tys jdIamSlrK tka;e,amsh 31064 Jmol-1 fõ' C6H6 j, jdIamSlrK

tkafg%dms w.h jkafka " (JK-1

mol-1 j,sks')

1) 73 2) 88 3) 92.3 4) 100.3 5) 96

28. A2(g) + B2(g) 2AB(g) = -536 kJ mol-1

hk m%;sl%shdfõ bÈß m%;sl%shdfõ il%Shk Yla;sh 208

kJmol-1

fõ' miq m%;sl%shdfrj il%shk Yla;sh jkqfha "

1) 328 kJmol-1

2) 744 kJmol-1

3) 536 kJmol-1

4) 539 kJmol-1

5) fkdokS'

29. 4NH3(g) + SO2(g) → 6H2O(g) + 4NO(g) fuu m%;sl%shdfõ iïu; tka;e,ams úm¾hdih kJ mol

-1 j,skA

( ) = -46.2 kJ mol-1

CH2O(l) = -241.8 kJ mol-1

( ( )) = 90.4 kJ mol-1

Page 5: MCQ NO 6471-6520

5 CHEMISTRY– UJITH ANJANA HEMACHANDRA

1) -803.7 2) -904.4 3) +803.7 4) +904.4 5) 709.3

30. HCl j,g iudk wdldrfhka yeisfrkafka hehs ie,lsh yelss m%;sl%shdj jkafka " 1) CuO +H2 → Cu + H2O 2) C2H2 + H2 → C2H6 3) 2Na + H2 → 2NaH

4) I2 + H2 → 2Hl 5) by; lsisjla fkdfõ'

31. my; l=uk j.ka;sh $ j.ka;s i;H fõo@ 1) N nyqrEmS wdldrh fkdfmkajhs'

2) NH4NO3(s) ;dm úfhdackfhka N2 idohs'

3) H3PO3(s) wï,h KMnO4 ys oï meyeh wj¾K lrhs'

4) P laIdr f,day yuqfõ§ oaúOdlrKh fõ'

32. my; l=uk j.ka;sh$j.ka;s i;H fõo@ a) NO, N2O hk fïjd ish,a, WNh .=KS fõ' b) NO yd N2O c,fha wødjH fõ' c) CO ks,a meye oe,a,la iys;j oykh fõ' d) CO fukau NO o ks¾O%eùh fõ'

33. my; i|yka uQ,øjH j,ska nyq ixhqc;dj fkdfmkajkafka l=ulao@$ l=uk tajdo@ a) Li b) Sr c) P d) Ti

34. laIdßh ødjKhlska H2(g) úia:dmkh lrkafka my; i|yka uQ, øjH j,ska l=ulao@ $ l=uk tajdo@

a) Hg b) Fe c) Zn d) Sn

35. SiO2 , P4O10 yd SO2 iïnkaOfhka i;H jkqfha my; l=uk m%ldYho@ a) ish¨u Tlaihsv iyixhqc fõ' b) ish¨u Tlaihsv wdï,sl fõ' c) SiO2 hkq whksl oe,sils' d) ish¨u Tlaihsv c,fha øjH fõ'

36. my; ljrla$ ljr tajd ;=< Mg(OH)2 Èh úh yelso@ a) NH4Cl b) H2O c) Ca(OH)2 d) HCl

37. HF(aq) ÿ¾j, wï,h WodiSklrKfha§ my; i|yka ;dm úm¾hdi j,ska l=uk tajd isÿfõo@

a) ú>gk ;dm wjfYdaIkh b) WodiSklrK ;dm uqla; lsÍu' c) F

- ys ic,k ;dmh wjfYdaIkh ùu' d) F ys ic,k ;dmh uqla; ùu'

38. H2O2 ms<sn|j i;H jkafka " a) H2O2 ú>gk ;dmodhlh b) úIîc úkdY lsÍug fhdod .kS' c) F

- c,h iuÕ l%shdfjka H2O2 ,efí' d) H2O2 , SO3 iuÕ m%;sl%shd lr H2SO4 foa'

39. mrudKq ish,a,lau tlu ;,hla u; msysgk wjia:d

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6 CHEMISTRY– UJITH ANJANA HEMACHANDRA

41. NaOH j,g wï,hla f,i l%shd l< yelsh' NaOH m%n, NIauhls'

42. HAt j,g T' ydrlhla f,i l%shd l< yelsh' HAt ys§ At mj;skqfha T' yß; ;;a;ajhlh'

43. SiO2 j, øjdxlh b;d by<h' SiO2 hkq fhdaO wKql oe,sils'

44. ish¨u P f.dkqfõ uQ,øjH NaOH iuÕ oaúOdrKh fõ'

we;eï uQ,øjH oaúOdrKfha§ T'ldrlhla f,i l%shd lrhs'

45. jdhquh Hl m%n, wï,hla f,i l%shd lrhs' jdhquh HI ys nkaOk ú>gkh fjñka myiqfjka

H+ iy I- whk idohs'

46. Z<1 jk úg ;d;a;aúl jdhqjl iïmSvH;dj mßmQ¾K jdhqjlg jvd myiq fõ'

;d;a;aúl jdhqjl Z<1 jk úg wKql wdl¾Yk

n, ksid wKQ w;r iuia: wdl¾Ykhla mj;S'

47. iu;=,s;j mj;sk ridhksl moaO;shla i|yd

= 0 fõ'

iu;=,s; wjia:dfõ§ M, iE§fï§ iS>%;djh iEuúgu m%;sl%shl jeh ùfï iS>%;djhg iudk fõ'

48. c,h ;=< SiCl4 fyd|ska c, úÉfPaokh fõ' Si ys ysia d ldlaIslj mj;S'

49. K m%Odk jYfhka ,nd .kafka Na jdIamh iuÕ

T' yrKfhks'

KCl j, øjdxlh b;d wvq neúka úoHq;a

úÉfPaokh i|yd fhdod .; fkdyelsh'

50. iuyr laf,darhsv c, úÉfPaokfhka wï,

iuÕ NIau o we;sfõ'

PCl3 c, úÉfPaokfhka tla ix>glhla f,i

HCl iEfoa'

(a) CH4 ^b& NH3 ^c& C2H2 ^d& C6H6

40. c,Sh BaCl2 ødjKhla iuÕ wjlafIamhla fokafka l=uk ixfhda.h$ ixfhda.o@

a) Na2SO4 b) Na2CO3 c) NaNO3 d) Na2SO3

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7 CHEMISTRY– UJITH ANJANA HEMACHANDRA

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8 CHEMISTRY– UJITH ANJANA HEMACHANDRA

ld,h ld oukakdf.a wkd.;h ld,h úiska ld oukq ,efí'''

Wð;a wxck fyaupkaø

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9 CHEMISTRY– UJITH ANJANA HEMACHANDRA