Kerala Plus Two Model Question Paper Chemistry

SAMPLE
PAPER

Second Year Higher Secondary Examination
Chemistry

Answer any 4 questions from 1 to 5 Each question carries 1 Mark (4x1=4 scores)

1. Number of moles of the solute per kilogram of the solvent is .........................
a) Mole fraction b) Molality, (c) Molarity d) Molar mass
2. From the rate expression identify the order of the reaction rate K-(A)1/2 (B)3/2

3. The oxidation number of Ni in the complex (Ni (CO)4) is
4. Mixture of con HCl and anhydrous ZnCl2 is known as ...................................
5. Tollen’s reagent is .....................................
a) ammoniacal AgNO3 b) ZnCl2 c)Benzene sulphonyl chloride d) CuSO4

Answer any 8 questions from 6 to 15. Each question Carries 2 Scores
(8x2 = 16 Scores)
6) a) State Henry's law
b) write any one application of Henry's law.
7) a) Define van't Hoff factor (i)
b) How can we calculate degree of dissociation (∞) using this.
8) Write the anode and cathode reaction that occur in the lead storage battery
9) Which equation gives the relationship between temperature and rate constant ·
Explain each term of the equation.
10) What are pseudo 1st order reaction
Give an example.
11) Give the IUPAC names of the full Complexes
a) K3 [Fe (CN)6]
b)[Pt (NH3)2 Cl2]

1 apX 5 hsc-bpÅ tNmZy-§-fn GsX-¦nepw 4 F®-¯n\v D¯cw Fgp-
XpI 1 kvtImÀ hoXw (4x1 =4)
1. 1 Intem{Kmw emb-¯n F{X tamÄ eo\w AS-§n-bn-«p−v F¶v kqNn-
¸n-¡p¶ ]Zw GXv ?
a) tamÄ {^m£³
b) tamfm-enän
c) tamfm-cnän
d) tamfmÀamÊv
2. X¶n-cn-¡p¶ tdäv FIvkv{]j-\n \n¶pw dnbm-£³ HmUÀ Is−-¯pI.
(Rate – k[A]1/2 [B]3/2
3. [N1(CO)4] F¶ D]-kw-tbm-PI kwbp-à-¯nse \o¡-ensâ HmIvko-I-cW
kwJy-bm-Wv............................
4. KmV HCl sâbpw ZnCl2 sâbpw an{in-X-amWv
5. F´mWv tSmf³kv doG-Pâv
a) Atam-Wn-bm-¡Â knÂhÀ ss\t{Säv
b) kn¦v t¢mssdUv
c) s_³kn³ kÄt^m-ssd t¢mssdUv
d) tIm¸À kÄt^äv

6 apX 15 hsc-bpÅ tNmZy-§-fn GsX-¦nepw 8 F®-¯n\v D¯cw
Fgp-Xp-I.

6. a) slân \nbaw {]kvXm-hn-¡pI

b) slân \nba¯nsâ {]tbm-Kn-IX hyà-am-¡p¶ Hcp DZm-l-cWw
Fgp-Xp-I

7. a) hmâv tlm^v ^mIvSÀ (i) \nÀÆ-Nn-¡pI

b) 'i' D]-tbm-Kn¨v Un{Kn Hm^v Untkm-kn-tb-j³ (∞)F§s\ I−p-]n-Sn-¡mw.

8. seUv sÌmtdPv _mä-dn-bnse Bt\m-Unepw ImtYm-Unepw \S-¡p¶
cmk-{]-hÀ¯-\-§Ä Fgp-Xp-I.

9. tdäv tIm¬Ìâpw Djvamhpw X½n-epÅ _Ôw hyà-am-¡p¶ ka-hmIyw
Fgp-X-p-I. Hmtcm tSapw F´ns\ kqNn-¸n-¡p-¶p.
10. kzotUm ^Ìv HmÀUÀ dnbm-£³ F´mWv? Hcp DZm-l-cWw Fgp-Xp-I.

11. NphsS X¶n-cn-¡p¶ D]-kw-tbm-PI kwbp-à-§fpsS IUPAC \ma-§Ä

FgpXpI

a) K3 [Fe(CN)5] b) [Pt(NH3)2 Cl2]

12) a) How will you Convert CH3 Br to CH3F ?
b) Name the reaction
13) Predict the product.

i) o
>

ii) + 2Na >
o

14) Carbylamines have an offensive smell.
Write the carbylamine reaction, with equation.
15) Differentiate between fibrous proteins and globular proteins with examples.

Answer any 8 questions from 16 to 26. Each question carries 3 marks.
(8x3 = 24 Score)
16. Calculate the mass of ascorbic acid (Vitamin C, C6H8O6) to be dissolved in 75g
of Acetic Acid to Lower its melting point by 1.5°C.
-1
(Kf of acetic acid = 3.9 KKgmol )

17. a)State kohlrausch law.
b) Ʌ°m for NaCl, HCl and CH3COONa are 126.4, 425.9, and 91 Scm2m-1
respectively. Calculate Ʌ°m for CH3 COOH.
18. Elements Zr and Hf shows similar atomic sizes. What is the reason behind
this and explain.
19. Write the formula of Potassium Dichromate. Give its method of preparation
from chromite ore.
20. [Co (NH3)6]3+ is a diamagnetic complex. Substantiate the above Statement
using valence Bond Theory.
21. Identify the products
(a) o OCH
3
+ HI

(b) OH 3
o

12. a) CH3-Br s\ CH3-F Bbn amdp-hm-\pÅ Hcp amÀ¤w Fgp-Xp-I.

b) dnbm-£sâ t]cv Fgp-XpI

13. Xmsg ]d-bp¶ cmk-{]-hÀ¯-\-§-fpsS s{]mU-IvSp-IÄ Fgp-XpI

i) o >

ii) o + 2Na >

14. ImÀ_n-e-an-\n\v H^³kohv kvsa BIp-¶p. ImÀ_n-e-an³ dnbm-£³
Fgp-Xp-I.
15. \mcp-I-fpÅ t{]m«o\pw t¥m_p-eÀ t{]m«o\pw X½n DZm-l-cW
klnXw thÀXn-cn-¡p-I.

16 apX 26 hsc-bpÅ tNmZy-§-fn GsX-¦nepw 8 F®-¯n\v D¯-c-sa-gp-
XpI Hmtcm tNmZy-¯n\pw 3 amÀ¡v hoXw (8x3 =24)
0
16. 75 {Kw Ak-änIv Bkn-Unsâ {Zmh-tWmÀPw 1.5 C Ipd-bv¡m³ AXnÂ
tNÀ¡− AkvtImÀ_nIv Bkn-Unsâ (C8H8O6)-amÊv I−p-]n-Sn-¡pI
(A-k-änIv Bkn-Unsâ Kf =3.9 k kgmol-1)
17. a)tImÄdm-jkv \nbaw {]kvXm-hn-¡pI (1)

b) Nacl, Hcl, NaAc F¶n-h-bpsS Ʌ°m bYm-{Iaw 126.4, 425.9, 91 Scm2m-1 BsW-
¦n Ak-änIv Bkn-Unsâ Ʌ°m IW-¡m-¡p-I.
18. knÀt¡m-Wn-bhpw lm^v\nb-ahpw Htc Atäm-anI hen¸w ImWn-
¡p¶p CXn\p ]n¶n-epÅ ImcWw hni-Z-am-¡p-I.
19. s]m«m-kyw ssUt{Im-ta-änsâ t^mÀape Fgp-XpI
t{Imssaäv Abn-cn \n¶pÅ CXnsâ \nÀ½mWw hni-Zo-I-cn-¡p-I.

20. [Co (NH3)6] 3+ Hcp Ubm-am-K-\-än¡v tImws¹-I-km-Wv. CXv hme³kv

t_m−v Xob-dn-bpsS ASn-Øm-\-¯n kaÀYn-¡p-I.
21. Xmsg ]d-bp¶ DÂ]-¶-§Ä Xncn-¨-dn-bp-I.

(c) oa OCH
3
+ HI

(d) OH 3
o

22. Identify A and B.

a) CH3COCH3 A

b) CH3 CN CH3CHO

23. How will you convert propomoic acid into the following compounds,
(1) Ethane (2) Batane
(b) What is esterification?
24.How will you distinguish 1°,2° and 3° amines ?
25. Give any three structural difference between DNA and RNA.
26. State Saytzeff’s rule. Illustrate with an example.

Answer any 4 questions from 27-31. Each questions Carries 4 marks.
(5x4 = 20 Score)
27. Diagramatically represent H2-O2 the full cell and Write the half cell reactions
taking place in the cell
28. The following is not an appropriate reaction for the preparation of t-butyl
ethyl ether
'( '(
!2"5$%& '( ' ') → '( ' +' (, Nacl
'( '(

(1) What is the major product of this reaction? (1)
(2) write a suitable reaction for the preparation of t-butyl ethyl ether? (3)
29. Explain the following with equations
a) HVZ Reaction b) Rosenmauds reaction
. 012o
30. For a first order reaction, k= log
012

(i) Derive an expression for half life period of a first order reaction
(ii) A first order reaction takes 40 minutes for 30% decomposition.
Calculate the half life of reaction.

22. A bpw B bpw Xncn-¨-dn-bpI

a) CH3COCH3 A
3
b) CH3 CN CH3CHO

23. a) s{]m¸-t\m-bnIv BknUv F§s\bmWv Xmsg-¸-d-bp¶ kwbp-à-§-
fmbn amäp-¶Xv F¶v ImWn-¡p-I.
1) CusYbv³ 2) _yqs«bv³

b) F´mWv FÌ-dn-^n-t¡-j³ ?
0 0 0
24. 1 ,2 ,3 F¶o Aao-\p-Isf \n§Ä F§-s\-bmWv Xncn-¨-dn-bp-¶Xv?

25. Un.F³.F, BÀ.F³.F F¶nh X½n-epÅ aq¶v LS-\m-hy-Xym-k-§Ä
Fgp-Xp-I.
26. skbväv sk^v \nbaw Fgp-Xp-I. DZm-l-cW klnXw hni-Z-am-¡p-I.

27 apX 31 hsc-bpÅ tNmZy-§-fn GsX-¦nepw 4 F®-¯n\v D¯cw
Fgp-XpI 4 kvtImÀ hoXw (5x4 =20 kvtImÀ)
27. H2-O2 CÔ\ skÃnsâ {]hÀ¯\ Nn{Xw hc¨v hni-Zo-I-cn-¡pI Cu
skÃn \S-¡p¶ lm^vsk cmk-{]-hÀ¯-\-§Ä Fgp-Xp-I.
28. NphsS X¶n-cn-¡p-¶-Xv. t- _yqss«³ CussY CuY-dnsâ \nÀ½m-W-
¯n\v A\p-tbm-Py-amb Hcp amÀ¤-a-Ã.
CH3 CH3
C2H5ONa + CH3-C-Cl CH3-C-OC2H5 + NaCl
CH3 CH3
1) Cu {]hÀ¯-\-¯nsâ {][m\ Dev]¶w F´m-bn-cn¡pw ?
2) t-_yqss«³ CussY CuY-dnsâ \nÀ½m-W-¯n\v A\p-tbm-Py-amb Hcp
amÀ¤-sagp-Xp-I.

29. Xmsg ]d-bp¶ cmk-{]-hÀ¯-\-§Ä hni-Zo-I-cn-¡p-I.

a) HVZ {]hÀ¯\w

b) tdmk³a−v dnbm-£³

30. K= 2.303 log [R]o = F¶Xv Hcp ^Ìv ZmÀUÀ dnbm-£sâ tdäv
t [R]
tIm¬Ìâv BWv.

1) ^Ìv HmÀUÀ dnbm-£sâ AÀ²m-bpkv Is−-¯p-¶-Xnsâ ka-hmIyw cq]o-
I-cn-¡p-I.
2) 40 an\n«v sIm−v 30% hnL-S\w ]qÀ¯n-bm-¡p¶ Hcp ^Ìv HmÀUÀ dnbm-
£sâ AÀ²m-bpkv Is−-¯p-I.

31. (i) What do you mean by Crystal field splitting (1)
(ii) Diagramatically represent the crystal field splitting in octahedral
complexes. (3)

31. 1) F´mWv {InÌÂ ^oUv kv¹nänw-Kv.

2) HIväm-^n-{k tIm¹-Ivknsâ {InÌ ^oÂUv kv¹nänw Hcp Nn{X-
¯nsâ klm-b-t¯msS hyà-am-¡p-I.