CBSE AIPMT 2010 Question Set

Jan 22 • Medical Sample Papers • 9887 Views • 6 Comments on CBSE AIPMT 2010 Question Set

CBSE(Central Board of Secondary Education) organize AIPMT(All India Pre-Medical Test) every year as a College Entrance Exam for all those students who wants to take admission to MBBS and BDS courses in various medical colleges in India.The main aim to conduct this exam is to enable impartial available of medical education to all regions in India.It was one of the few competitive exam that was merit based and without any reservation.However in 2006,under pressure,reservation was  undertaken for SC,ST & OBC.There are two level of exam-Level 1(Preliminary test)-contains200 questions(previously) which is entirely based on NCERT books specially biology and it takes place in the month of April.Level-2(mains)-Organized in the month of May which is most awaited level of exam.In this level a candidate’s knowledge is tested on following subjects as well physics(25%),chem(25%),Bio(50%).

From 2010,exam pattern has been changed i.e., it is completely made objective type and both the preliminary and mains exam contains 120 questions and duration for both the level is 3 hours.For each correct ans 4 marks will be awarded whereas 1 mark will be deducted for every wrong ans marked.

CBSE AIPMT 2010(PRELIMINARY) CHEMISTRY:

1. Which of the following statements about primary amines is ‘False’?
1) Aryl amines react with nitrous acid to produce phenols
2) Alkyl amines are stronger bases than ammonia
3) Alkyl amines are stronger bases than aryl amines
4) Alkyl amines react with nitrous acid to produce alcohols

2. For an endothermic reaction, energy of activation is Ea and enthalpy of reaction is ∆H (both of these in kJ/mol). Minimum value of Ea will be
1) more than ∆H
2) equal to zero
3) less than ∆H
4) equal to ∆H

3. Which one is most reactive towards SN1 reaction ?
1) C6H6C(CH3)(C6H5)Br
2) C6H5CH2Br
3) C6H5CH(C6H5)Br
4) C6H5CH(CH3)Br

4. Oxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively
1) +5, +4, +3
2) +3, +4, +5
3) +3, +5, +4
4) +5, +3, +4

5. If pH of a saturated solution of Ba(OH)2 is 12, the value of its K(SP) is
1) 5.00 × 10–6 M3
2) 5.00 × 10–7 M3
3) 4.00 × 10–6 M3
4) 4.00 × 10–7 M3

6. Standard entropies of X2, Y2 and XY3 are 60, 40 and 50 J K–1 mol–1 respectively. For the reaction (1/2)X2 + (3/2)Y3 XY3, ΔH = –30kJ to be at equilibrium, the temperature should be
1) 1250 K
2) 500 K
3) 750 K
4) 1000 K

7. In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridization?
1) NH2− and H2O
2) BF3 and NH2
3) NO2− and NH3
4) BF3 and NO2−

8. Which one of the following does not exhibit the phenomenon of mutarotation ?
1) (+) Maltose
2) (–) Fructose
3) (+) Sucrose
4) (+) Lactose

9. Which one of the following ions has electronic configuration [Ar]3d6 ?
1) Fe3+
2) Co3+
3) Ni3+
4) Mn3+

10. Which of the following complex ion is not expected to absorb visible light?
1) [Fe(H2)6]2+
2) [Ni(H2O)6]2+
3) [Ni(CN)4]2-
4) [Cr(NH3)6]3+

11. Property of the alkaline earth metals that increases with their atomic number
1) Ionization energy
2) Electronegativity
3) Solubility of their hydroxides in water
4) Solubility of their sulphates in water

12. During the kinetic study of the reaction, 2A + B → C + D, following results were obtained :
Run [A] mol L–1 [B]/mol L–1 Initial rate of formation of D/mol L–1 min–1
I. 0.1
6.0 × 10–3 0.1
II. 0.3
7.2 × 10–2 0.2
III. 0.3
2.88 × 10–1 0.4
IV 0.4
2.40 × 10–2 0.1
Based on the above data which one of the following is correct?
1) rate = k[A]2 [B]2
2) rate = k[A] [B]2
3) rate = k[A]2 [B] 4) rate = k[A] [B]

13. 25.3 g of sodium carbonate, Na2CO2 is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, Na+ and carbonate ions, CO32– are respectively (Molar mass of Na2CO3 = 106 g mol–1)
1) 1.90 M and 1.910 M
2) 0.477 M and 0.477 M
3) 0.955 M and 1.910 M
4) 1.910 M and 0.955 M

14. In which one of the following species the central atom has type of hybridisation which is not the same as that present in the other three?
1) SbCl52–
2) PCl5
3) SF4
4) I3

15. Which one of the following species does not exist under normal conditions?
1) B2
2) Li2
3) Be2+
4) Be2

16. For the reaction N2O5(g) → 2NO2(g) + ½O2(g) the value of rate of disappearance of N2O5 is given as 6.25 × 10–3 mol L–1s–1. The rate of formation of NO2 and O2 is given respectively as
1) 6.25 × 10–3 mol L–1s–1 and 3.125 × 10–3 mol L–1s–1
2) 1.25 × 10–2 mol L–1s–1 and 6.25 × 10–3 mol L–1s–1
3) 6.25 × 10–3 mol L–1s–1 and 6.25 × 10–3 mol L–1s–1
4) 1.25 × 10–2 mol L–1s–1 and 3.125 × 10–3 mol L–1s–1

17. The correct order of the decreasing ionic radii among the following isoelectronic species is
1) S2– > Cl– > K+ > Ca2+
2) K+ > Ca2+ > Cl– > S2–
3) Ca2+ > K+ > S2– > Cl–
4) Cl– > S2– > Ca2+ > K+

18. AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two appositively charged ions in the lattice is
1) 200 pm
2) 300 pm
3) 335 pm
4) 250 pm

19. Which of the following ions will exhibit colour in aqueous solutions ?
1) Lu3+ (z = 71)
2) Sc3+ (z = 21)
3) La3+ (z = 57)
4) Ti3+ (z = 22)

20. That is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH ? a for CH3COOH = 1.8 × 10–5
1) 1.8 × 10–5
2) 9.0 × 10–6
3) 3.5 × 10–4
4) 1.1 × 10–5

21. Which one of the following compounds is a peroxide?
1) MnO2
2) NO2
3) KO2
4) BaO2

22. Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
1) CH3COOCOCH3
2) CH3COCl
3) CH3COOCH3
4) CH3CONH2

23. The reaction of toluene with Cl2 in presence of FeCl3 gives ‘X’ and reaction in presence of light given ‘Y’. Thus, ‘X’ ‘X’ and ‘Y’ are
1) Y = o-and p-chlorotoluene, Y = Trichloromethyl benzene
2) X = Benzyl chloride, Y = m – chlorotoluene
3) X = Benzal chloride, Y = 0-chlorotoluene
4) X = m – chlorotoluene, Y = p – chlorotoluene

24. Which one of the following is employed as Tranquilizer drug?
1) Naproxen
2) Mifepristone
3) Promethazine
4) Valium

25. Which one of the following molecular hydrides acts as a Lewis acid ?
1) B2H6
2) CH4
3) NH3
4) H2O

26. The number of atoms in 0.1 mol of a triatomic gas is :
(NA = 6.02 × 1023 mol–1)
1) 3.600 × 1023
2) 1.800 × 1022
3) 6.026 × 1022
4) 1.806 × 1023

27. Acetamide is treated with the following reagents separately. Which one of these would yield methyl amine ?
1) Hot conc. H2SO4
2) PCl5
3) NaOH–Br2
4) Sodalime

28. The existence of two different coloured complexes with the com position of [Co(NH3)4Cl2]+ is due to
1) Coordination isomerism
2) Ionization isomerism
3) Linkage isomerism
4) Geometrical isomerism

29. Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?
1) BaSO4
2) SrSO4
3) CaSO4
4) BeSO4

30. For the reduction of silver ions with copper metal the standard cell potential was found be +0.46 V at 25°C. The value of standard Gibbs energy, ∆G° will (F = 96500 C mol–1)
1) –44.5 Kj
2) –98.0 kJ
3) –89.0 kJ
4) –89.0 J

31. A solution of sucrose (molar mass = 342 g mol–1 has been prepared by dissolving 68.5 g of sucrose in 1000 g of water. The freezing point of the solution obtained will be (Kf for water = 1.86 K kg mol–1)
1) +0.372°C
2) –0.570°C
3) –0.372°C
4) +0.520°C

32. Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
1) Distillation under reduced pressure
2) Hydrolysis
3) Oxidation
4) Cracking

31. An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to
1) Increase in both i.e. number of ions and ionic ability of ions
2) Increase in number of ions
3) Increase in ionic mobility of ions
4) 100% ionisation of electrolyte at normal dilution

32. An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution of increase?
1) Addition of 1.00 molal KI
2) Addition of water
3) Addition of NaCl
4) Addition of Na2SO4

33. The correct order of increasing bond angles in the following species is
1) Cl2O < ClO2− < ClO2
2) ClO2− < Cl2O < ClO2
3) Cl2O < ClO2 < ClO2−
4) ClO2 < Cl2O BF3 > BCl3
2) BF3 > BCl3 > BBr3
3) BCl3 > BF3 > BBr3
4) BBr3 > BCl3 > BF3

34. Which of the following reactions will not result in the formation of carbon-carbon bonds ?
1) Wurtz reaction
2) Friedel-Crafts acylation
3) Reimer-Tieman reaction
4) Cannizaro reaction

35. Which of the following pairs has the same size?
1) Zr4+; Hf4+
2) Zn2+; Hf4+
3) Fe2+; Ni2+
4) Zr4+; Ti4+

36. In a buffer solution containing equal concentration of B– and HB, the Kb for B– is 10–10. The pH of buffer solution is
1) 6
2) 4
3) 10
4) 7

37. Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?
1) F < S < O < Cl
2) S < O < Cl < F
3) Cl < F < O < S
4) O < S < F III > IV > I
2) III > IV > II > I
3) III > II > IV > I
4) II > III > I > IV

YOUTUBE LINK: AIPMT CHEMISTRY BASIC CONCEPTS

AIPMT online test series futher look: AIPMT Physics-Magnetic Effects of Current

AIPMT online test series futher link: AIPMT 2012 PHYSICS SOLVED

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