AIPMT Online Test Series – Chemistry

Jan 28 • Medical Sample Papers • 4810 Views • 6 Comments on AIPMT Online Test Series – Chemistry

The AIPMT (All India Pre Medical Test)Prelims exam is a national level entrance exam conducted by Central Board of Secondary Education (CBSE), Delhi. This exam is conducted for students to get admission to MBBS and BDS courses in most of the medical colleges across the country. Students appearing for this exam are tested on the subjects- Physics, Chemistry, and Biology.

This exam consists of two level. One is Preliminary conducted usually on 1st Sunday of the April month and the second is Mains conducted in the month of May.

All the students who want to take admission to MBBS & BDS courses they have to do hard work for the entrance exam AIPMT. The best score in the exam provides them a good medical college.

 

chemistry paper

AIPMT EXAM

AIPMT ONLINE TEST SERIES-CHEMISTRY:

01. 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 IV > I

02. 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.
03. 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.
04. Which one is most reactive towards SN1 reaction ?
1) C6H6C(CH3)(C6H5)Br
2) C6H5CH2Br
3) C6H5CH(C6H5)Br
4) C6H5CH(CH3)Br
05. 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
06. 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
07. Which of the following compounds has the most acidic nature?

1) HCl

2)H2so4

3)HNO3

4)H3PO4


08. 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


09. 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


10. 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−


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


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


13. Which of the following structures represents Neoprene polymer ?
1) Cl
|
(―CH2 ― CH―)n
2) (―CH―CH2―)n
|
C6H5
3) (―CH2―C = CH―CH2―)n
|
Cl
4) CN
|
(―CH2―CH―)n


14. The correct order of increasing reactivity of C–X bond towards nucleophile in the following compound is
1.Ca2+ > K+ > S2– > Cl–
2.Cl– > S2– > Ca2+ > K+
3. (CH3)3C–X
4. (CH3)2CH–X
1) 4 < 3 < 1 < 2
2) 3 < 2 < 1 < 4
3) 1 < 2 < 4 < 3
4) 2 < 3 K+ > Ca2+
2) K+ > Ca2+ > Cl– > S2–

 

15. 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] 16. 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+
17. 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
18. Which one of the following species does not exist under normal conditions?
1) B2
2) Li2
3) Be2+
4) Be2
19. 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
20. 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
21. 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
22. 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)
23. 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
24. 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+
25. Which one of the following compounds is a peroxide?
1) MnO2
2) NO2
3) KO2
4) BaO2
26. Which one of the following is employed as Tranquilizer drug?
1) Naproxen
2) Mifepristone
3) Promethazine
4) Valium

27. 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
28. Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
1) CH3COOCOCH3
2) CH3COCl
3) CH3COOCH3
4) CH3CONH2
29. Which one of the following molecular hydrides acts as a Lewis acid ?
1) B2H6
2) CH4
3) NH3
4) H2O
30. 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
31.In the following the most stable conformation of a-butane is

 

32. 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
33. Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

1) BaSO4
2) SrSO4
3) CaSO4
4) BeSO4


34. 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) Soda-lime


35. 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


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


37. 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 be(F = 96500 C mol–1)
1) –44.5 Kj
2) –98.0 kJ
3) –89.0 kJ
4) –89.0 J


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


39. 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 BCl3
2) BF3 > BCl3 > BBr3
3) BCl3 > BF3 > BBr3
4) BBr3 > BCl3 > BF3


40. 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


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


42. 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


43. 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

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6 Responses to AIPMT Online Test Series – Chemistry

  1. Anjali Sharma says:

    If you are looking for more Online AIPMT Test Series. CLICK here.

  2. Sneha Sinha says:

    A good collection of question for all medical aspirants…Do try this and emerge out successful in your exams.Question paper is based on the latest pattern…

  3. Neha S says:

    Hi, to all the medical aspire-rs.
    Tensed about your exams? But you can overcome your fears by solving as many rest series as you can.
    Because it brings you to face to face interface with the newest pattern and the probable questions coming this year.
    So, here’s one.. Solve it yourself.

  4. Gourav Kumar says:

    AIPMT is the main examination for medical entrance in India which is a dream for many students and they have to study really hard to get a good rank in this examination and chemistry is a main paper in the examination. So students need to have a good practice in this subject.
    This article is a sample paper of AIPMT chemistry paper and students should solve it very carefully to get a good command in this paper.

  5. Rashmi Rani says:

    Students aspiring to be a successful doctor have to first clear the entrance exams. We all know medical line if a very reputed line but to crack its exam is also that difficult but guys and gals if you are in regular practice of the papers asked in these exams then it will be easy for you to prepare for the exam in a short duration also. By survey it has been found out that chemistry is the core paper for these exams as the questions are easy and to score in chemistry is not a big deal.. though you have to focus on all the subtopics of chemistry but organic chemistry should be preferred as it helps to score well without mistake. so go through this sample question and practice well. all the best to everyone

  6. diya mukherjee says:

    hey guys this question paper contains the aipmt online test series of chemistry paper. Do try them.This test series will help you alot to understand the pattern of question in exam.

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