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June 4th, 2016, 02:30 PM
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BCECE Solved Question Paper

Hello sir, I am Suraj. I want you to help me by providing me with the Bihar Combined Entrance Competitive Examination (BCECE) solved question paper of chemistry. Can you help me?

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BCECE Chemistry paper
1. The IUPAC name of lactic acid is
(A) 2-hydroxyethanoic acid
(B) 2-hydroxypropanoic acid
(C) 3-hydroxybutanoic acid
(D) 2-hydroxybutanoic acid
2. The number of optical isomers of
HOOC – (CHOH)2 – COOH is
(A) 2 (B) 3 (C) 4 (D) 0
3. CH3
free radical contains C with
following hybridization :
(A) sp2 (B) sp
(C) sp3 (D) None of these
4. Electrolysis of CH3COOK forms
following on anode :
(A) H2 + CH4 (B) CH4 + CO2
(C) C2H6 + H2 (D) C2H6 + CO2
5. This causes explosions in coal mines :
(A) H2 + air (B) CO + air
(C) C2H6 + air (D) CH4 + air
6. CH CH ––––––––––––––––
KMnO4 + OH

product is
(A) CH3CHO (B) CH2OH.CH2OH
(C) COO–
|
COO–
(D) CHO
|
CHO
7. The ratio of CH2=CHCH=CH2 to
styrene in Buna-S is
(A) 1 : 1 (B) 2 : 1
(C) 3 : 1 (D) 1 : 2
8. Esterification is involved in the
formation of
(A) Decron (B) Nylon
(C) Cellulose (D) Wool
9. This is formed from a cyclic amide :
(A) Decron (B) Nylon
(C) Wool (D) PVC
10. Bitumen contains hydrocarbons with
C-atoms in the range of
(A) C20 – C30 (B) C30 – C40
(C) C16 – C20 (D) C12 – C16
11. Williamson’s synthesis produces
(A) Alkane (B) Amide
(C) Ester (D) Ether
12. CHCl
Ag Powder
–––––––––––
Heat
produces
(A) CH CH (B) CH2 = CH2
(C) CH4 (D) CH3 – CH3
13. The % of ethyl alcohol in the liquid
produced by fermentation of starch is
generally
(A) 5 – 10 % (B) 90 – 100 %
(C) 75 – 90 % (D) 40 – 50 %
14. Urea behaves as
(A) Monoacidic base (B) Diacidic base
(C) Neutral compound (D) Acid
15. Biuret is
(A) NH2CONHCOCH3
(B) NH2CONHNO2
(C) HNCO
(D) NH2CONHCONH2
16. Which of the following will give
methylamine upon reaction with
acetamide ?
(A) PCl
5 (B) NaOH + Br2
(C) Soda lime (D) Hot Conc. H2SO4
17. Spent lye is formed during the
preparation of a
(A) Detergent (B) Soap
(C) Ketones (D) Esters
18. Its solution gives blue colour with I2
solution :
(A) Glucose (B) Sucrose
(C) Starch (D) Insulin
19. How many geometrical isomers are there
for [Pt(Py)(NH3)BrCl] ?
(A) 4 (B) 0 (C) 2 (D) 3
20. Which one is a peroxide ?
(A) KO2 (B) BaO2
(C) MnO2 (D) NO2
21. Which is the oxidation state generally
found in lanthanides ?
(A) 4 (B) 2 (C) 5 (D) 3
22. How many bridge 0 atoms are present in
P4H10 ?
(A) 6 (B) 4 (C) 2 (D) 5
23. Which is produced by contact process ?
(A) H2SO4 (B) Steel
(C) S (D) NaOH
24. How many out of TiF6
2–, CoF6
3–,
Cu2Cl
2 and NiCl
2– (Ti = 22, Co = 27,
Cu = 29, Ni = 28) are colourless ?
(A) 0 (B) 2 (C) 3 (D) 1
25. Which of the following is not
concentrated by Froth floatation process ?
(A) Argentite (B) Galena
(C) Copper pyrite (D) Bauxite
26. In which molecule all bonds are not
identical ?
(A) ClF3 (B) BF3
(C) AlF3 (D) NF3
27. Which compound behaves as electron
deficient ?
(A) B2H6 (B) C2H6
(C) PH3 (D) SiH4
28. Which one lacks metal carbon bond ?
(A) Al(OC2H5)3 (B) C2H5MgBr
(C) K[Pt(C2H4Cl
3)] (D) Ni(CO)4
29. This gas decolorizes Bromine water :
(A) SO2 (B) HBr (C) HCl (D) H2S
30. Gypsum on heating above 473 K gives
(A) CaSO4.2H2O (B) CaSO4
(C) CaSO4
H2O (D) SO3 + CaO
31. Which one is a major impurity in pig
iron ?
(A) Si (B) O (C) S (D) C
32. Pewter contains
(A) Al (B) Ag (C) Pb (D) Au
33. Calomel is
(A) HgCl
2 (B) Hg2Cl
(C) HgI2 (D) HgO
34. This element is sometime called quick
silver :
(A) Au (B) Cu (C) Sn (D) Hg
35. Roasting of Cinnabar produces
(A) HgO (B) ZnO
(C) Hg (D) HgS
36. Gypsum is
(A) CaSO4 2H2O
(B) (CaSO4)2 H2O
(C) CaOCl
(D) CaCl
2 H2O
37. Formalin is a solution of
(A) HCHO (B) HCOOH
(C) CH3OH (D) CH3CHO
38. The reaction of sunflower oil with
NaOH can be called
(A) Cracking
(B) Saponification
(C) Polymerization
(D) Esterification
39. This is a thermoplastic :
(A) PVC (B) Bakelite
(C) Melamine (D) Protein
40. Which of the following does not contain
any triple bond ?
(A) N2 (B) HCN
(C) C2H2 (D) NH3
41. Which one of the following has a square
planar structure ?
(A) PCl
5 (B) [Cu(NH3)4]2+
(C) SiF6 (D) CH4
42. Which one of the following is not a fuel
gas ?
(A) Water gas (B) Producer gas
(C) Laughing gas (D) Marsh gas
43. This is involved in rusting of Fe :
(A) O2 (B) H2 (C) N2 (D) Cl
44. The solute can be separated from
solution by
(A) Filtration (B) Evaporation
(C) Decantation (D) Sedimentation
45. Salt is obtained from sea water by
(A) Sublimation (B) Evaporation
(C) Crystallization (D) Distillation
46. Industrial production of polythene is
done by polymerization of
(A) Methane
(B) Acetylene
(C) Ethylene
(D) Styrene
47. The following is used for making natural
rubber hard :
(A) Petrol (B) H2SO4
(C) P4 (D) S
48. This is responsible for green house effect
(A) N2 (B) O2
(C) O3 (D) CO2
49. The nucleus of H-atom has
(A) only proton
(B) only neutron
(C) one proton + one neutron
(D) only electron
50. This has one C – C bond, one C = C
bond and one C C bond
(A) C4H6
(B) C4H4
(C) C4H3
(D) C4H5
51. Which one of the following has linear
structure ?
(A) SO2 (B) CO2
(C) NO2 (D) H2O
52. The reaction of P4 + NaOH involves the
following for P :
(A) Oxidation
(B) Reduction
(C) Both oxidation and reduction
(D) Neutralization
53. As compared to a gas X, the diffusion
rate of CH4 is 2 times. The molecular
weight of gas X is
(A) 64 (B) 32
(C) 4 (D) 8
54. This reagent is used for testing NH3 :
(A) Baeyer (B) Nessler
(C) Fenton (D) Mollisch
55. If 5.8 g NaCl is dissolved in 90 g of
H2O, the mole fraction of NaCl is
(molecular weight of NaCl = 58.5)
(A) 0.1 (B) 0.01
(C) 0.2 (D) 0.02
56. Ink is a
(A) Sol (B) Gel
(C) Foam (D) Emulsion
57. Sol of which of the following is
positively charged ?
(A) As2O3 (B) Fe(OH)3
(C) Au (D) Starch
58. Saliva contains
(A) Lipase (B) Trypsin
(C) Amylase (D) Insulin
59. Which one is not correct ?
(A) H = E – V
(B) H = E + V
(C) E = Q – W
(D) W = P × V
60. For which of the following heat of
neutralization will be 13.7 kcal ?
(A) HCl + NH4OH
(B) HNO3 + KOH
(C) NaOH + CH3COOH
(D) H2SO4 + NH4OH
61. In which of the following H2O2 is an
oxidising agent ?
(A) 2KI + H2O2 2KOH + I2
(B) Ag2O + H2O2 2Ag + H2O + O2
(C) PbO2 + H2O2 PbO + H2O + O2
(D) O3 + H2O2 2O2 + H2O
62. This does not cause hardness of water :
(A) CaCl
2 (B) MgSO4
(C) Na2SO4 (D) MgCl
63. 10 volume H2O2 is about
(A) 30% (B) 3%
(C) 1% (D) 10%
64. Which one is a true peroxide ?
(A) NO2 (B) MnO2
(C) BaO2 (D) SO2
(A) NO2 (B) MnO2
(C) BaO2 (D) SO2
65. Slaked lime is
(A) CaCO3 (B) CaO
(C) Ca(OH)2 (D) Ca(C2O4)
66. Which one decomposes on heating ?
(A) MgCO3 (B) Na2CO3
(C) K2CO3 (D) Rb2CO3
67. Solder contains
(A) Sn (B) Al
(C) Cu (D) Cd
68. This contains CeO :
(A) Alum
(B) Pyrex glass
(C) Crooks glass
(D) Ordinary glass
69. How many oxides of N are neutral ?
(A) 0 (B) 2
(C) 1 (D) 4
70. CuSO4 solution with excess of KCN
gives
(A) Cu(CN)2
(B) Cu(CN)
(C) K2[Cu(CN)4]
(D) K3[Cu(CN)4]
71. Acetylene has
(A) 5bonds
(B) 4+ 1bonds
(C) 3+ 2bonds
(D) 2+ 2bonds
72. How many isomeric amines are possible
for C3H9N ?
(A) 2 (B) 3
(C) 4 (D) 5
73. Which one can give either methane or
ethane by a single step upon reaction
with different reagents ?
(A) CH3I (B) C2H5I
(C) CH3OH (D) C2H5OH
74. This will give 2, 2-dibromopropane :
(A) CH CH + 2HBr
(B) CH3C CH + 2HBr
(C) CH3 CH = CH2 + HBr
(D) CH3 – CH2 – CH2 = CH2 + HBr
75. Petrol is a mixture of hydrocarbons with
following number of C-atoms :
(A) C3 – C5 (B) C5 – C6
(C) C6 – C8 (D) C7 – C9
76. Phosgene is
(A) C6H5NC (B) CCl
(C) COCl
2 (D) C2H5NH2
77. Oxidation of this gives methyl ethyl
ketone :
(A) 2-Propanol (B) 1-Butanol
(C) 2-Butanol (D) 1-Butyl alcohol
78. This does not react with Na :
(A) C2H5OH
(B) CH3CHOHCH3
(C) CH3 – O – CH3
(D) CH3COOH
79. Lucas reagent is
(A) Conc. HCl + anhydrous ZnCl
2
(B) Conc. HCl + ZnCl
2
(C) Conc. HNO3 + anhydrous ZnCl
2
(D) Conc. HNO3 + ZnCl
2
80. This compound has one alcoholic and
one aldehydic functional group :
(A) Aldol
(B) Cyanohydrin
(C) Grignard reagent
(D) Acetoacetate
81. Which is the strongest acid ?
(A) HCOOH
(B) CH3COOH
(C) CH3CH2COOH
(D) ClCH2COOH
82. Paraaldehyde is
(A) Vinager
(B) 40% HCHO
(C) (CH3CHO)3
(D) C6H5CHO
83. (CH3COO)2Ca + (HCOO)2Ca mixture
upon heating gives
(A) CH3COCH3
(B) CH3CHO
(C) HCHO + CaCO3
(D) CH3CHO + CaCO3

For more details, you can refer to the attached file;
Attached Files
File Type: pdf BCECE Chemistry paper.pdf (149.2 KB, 76 views)

Last edited by Neelurk; June 18th, 2020 at 09:01 AM.
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