Part – I : Chemistry
Section-I (Single Correct Choice Type)
This section contains 8 multiple choice questions each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
1. The correct structure of ethylenediaminetetraacetic acid (EDTA) is
(A)
(B)
(C)
(D)
2. The ionization isomer of [Cr(H2O)4Cl(NO2)]Cl is
(A) [Cr(H2O)4(O2N)]Cl2
(B) [Cr(H2O)4Cl2] (NO2)
(C) [Cr(H2O)4 Cl(ONO)]Cl
(D) [Cr(H2O)4Cl2(NO2)] ∙ H2O
3. The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
(A) BrCH2CH2CH2CH2CH3 and CH3CH2C ≡ CH
(B) BrCH2CH2CH3 and CH3CH2CH2C ≡ CH
(C) BrCH2CH2CH2CH2CH3 and CH3C ≡ CH
(D) BrCH2 CH2CH2CH3 and CH3CH2C ≡ CH
4. The correct statement about the following disaccharide is
(A) Ring (a) is pyranose with α-glycosidic link
(B) Ring (a) is furanose with α-glycosidic link
(C) Ring (b) is furanose with α-glycosidic link
(D) Ring (b) is pyranose with β-glycosidic link
5. In the reaction the products are
(A)
(B)
(C)
(D)
6. Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is
(A)
(B)
(C)
(D)
7. The species which by definition has ZERO standard molar enthalpy of formation at 298 K is
(A) Br2(g)
(B) Cl2(g)
(C) H2O(g)
(D) CH4(g)
8. The bond energy (in kcal mol−1) of a C-C single bond in approximately
(A) 1
(B) 10
(C) 100
(D) 1000
Section-II (Multiple Correct Choice Type)
This section contains 5 multiple choice questions. Each question has four choices A), B), C) and D) out of which ONE OR MORE may be correct.
9. The reagent(s) used for softening the temporary hardness of water is(are)
(A) Ca3(PO4)2
(B) Ca(OH)2
(C) Na2CO3
(D) NaOCl
10. In the reaction the intermediate(s) is(are)
(A)
(B)
(C)
(D)
11. In the Newman projection for 2, 2-dimethylbutane
X and Y can respectively be
(A) H and H
(B) H and C2H5
(C) C2H5 and H
(D) CH3 and CH3
12. Among the following, the intensive property is (properties are)
(A) molar conductivity
(B) electromotive force
(C) resistance
(D) heat capacity
13. Aqueous solutions of HNO3, KOH, CH3COOH, and CH3COONa of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)
(A) HNO3 and CH3COOH
(B) KOH and CH3COONa
(C) HNO3 and CH3COONa
(D) CH3COOH and CH3COONa
Section-III (Paragraph Type)
Paragraph for Questions 14 to 16
This section contains 2 paragraphs. Based upon the first paragraph 2 multiple choice questions and based upon the second paragraph 3 multiple choice questions have to be answered. Each of these questions has four choices A), B), C) and D) out of WHICH ONLY ONE CORRECT.
Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4∙5H2O), atacamite (Cu2Cl(OH)3), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalcopyrite involves partial roasting, removal iron and self-reduction.
14. Partial roasting of chalcopyrite produces
(A) Cu2S and FeO
(B) Cu2O and FeO
(C) CuS and Fe2O3
(D) Cu2O and Fe2O3
15. Iron is removed from chalcopyrite as
(A) FeO
(B) FeS
(C) Fe2O3
(D) FeSiO3
16. In self-reduction, the reducing species is
(A) S
(B) O2−
(C) S2−
(D) SO2
Paragraph for Questions 17 to 18
The concentrate of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important balance. A simple model for such a concentration cell involving a metal M is
M(s)|M+(aq; 0.05 molar)||M+(aq; 1 molar)|M(s)
For the above electrolytic cell the magnitude of the cell potential |Ecell| = 70 mV.
17. For the above cell
(A) Ecell > 0; ∆G > 0
(B) Ecell > 0; ∆G < 0
(C) Ecell < 0; ∆G° > 0
(D) Ecell > 0; ∆G° < 0
18. If the 0.05 molar solution of M+ is replaced by a 0.0025 molar M+ solution, then the magnitude of the cell potential would be
(A) 35 mV
(B) 70 mV
(C) 140 mV
(D) 700 mV
Section-IV (Integer Type)
This section contains TEN questions. The answer to each question is a single digit integer ranging from 0 to 9.
19. The total number of basic groups in the following form of lysine is
20. The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C4H6 is
21. In the scheme given below, the total number of intra molecular aldol condensation products formed from ‘Y’ is
22. Amongst the following, the total number of compounds soluble in aqueous NaoH is
23. Amongst the following the total number of compounds whose aqueous solution turns red litmus paper blue is
24. Based on VSEPR theory, the number of 90 degree F−Br−F angles in BrF5 is
25. The value of n in the molecular formula BenAl2Si6O18 is
26. A student performs a titration with different burettes and finds titre values of 25.2 mL, 25.25 mL, and 25.0 mL. The number of significant figures in the average titre value is
27. The concentration of R in the reaction R → P was measured as a function of time and the following data is obtained :
The order of the reaction is
28. The number of neutrons emitted when undergoes controlled nuclear fission to
is
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