AIPMT 2015 Chemistry Online Model Test Paper- 2 Practice MCQs Multiple Choice Questions Fully Solved with Answer Key Free

AIPMT All India Pre Medical Test is conducted by CBSE in compliance with the directives of the Hon'ble Supreme Court of India for admissions to 15% seats of Medical/ Dental colleges of India. Some other State Govt university or  institutions also use AIPMT merit list for admission in the Medical Colleges/Dental Colleges against seats under their control. Here we have published model test paper for Chemistry for practice purpose with objective type MCQs multiple choice questions based on AIPMT previous years question papers.

AIPMT 2015 Chemistry Model Test Paper - 2

Q.1. The state of hybridization of C2, C3, C5 and C6 of the hydrocarbon,
 

 is in the following sequence:

1) sp³, sp², sp² and sp
2) sp, sp², sp² and sp³
3) sp, sp², sp³ and sp²
4) sp, sp³, sp² and sp³

Q.2. Oxidation numbers of P in PO₄^3- , of S in SO₄^2- and that of Cr in Cr₂O₇^2- are respectively:

1) + 3, + 6 and + 5
2) + 5, + 3 and + 6
3) - 3, + 6 and + 6
4) + 5, + 6 and + 6

Q.3. Lithium metal crystallizes in a body centered cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be:

1) 151.8 pm
2) 75.5 pm
3) 300.5 pm
4) 240.8 pm

Q.4. Which of the following reactions is an example of nucleophilic substitution reaction?

1) 2 RX + 2 Na -> R - R + 2 NaX
2) RX + H₂ -> RH + HX
3) RX + Mg -> RMgX
4) RX + KOH -> ROH + KX

Q.5. In the case of alkali metals, the covalent character decreases in the order:

1) MF > MCl > MBr > MI
2) MF > MCl > MI > MBr
3) MI > MBr > MCl > MF
4) MCl > MI > MBr > MF

Q.6. Which one of the following species does not exist under normal conditions?

1) Be₊²
2) Be₂
3) B₂
4) Li₂

Q.7. Which of the following complex ion is not expected to absorb visible light?

1) [Ni(CN)₄]^2-
2) [Cr(NH₃)₆]³⁺
3) [Fe(H₂O₆)₆]²⁺
4) [Ni(H₂O)₆]²⁺

Q.8. If pH of a saturated solution of Ba(OH)₂ is 12, the value of K_(SP) is:

1) 4.00*10^-6 M³
2) 4.00*10^-7 M³
3) 5.00*10^-6 M³
4) 5.00*10^-7 M³

Q.9. For the reaction
N₂O_5(g) -> 2No_2(g) + 1/2O_2(g) the value of rate of disappearance of N₂O₅ is given as 6.25*10^-3mol L ^-1 s^-1. The rate of formation of NO₅ and O₂ is given respectively as:

1) 6.25*10^-3mol L ^-1 s^-1 and 6.25*10^-3mol L ^-1 s^-1
2) 1.25*10^-2mol L ^-1 s^-1 and 3.125*10^-3mol L ^-1 s^-1
3) 6.25*10^-3mol L ^-1 s^-1 and 3.125*10^-3mol L ^-1 s^-1
4) 1.25*10^-2mol L ^-1 s^-1 and 6.25*10^-3mol L ^-1 s^-1

Q.10. Which one of the following does not exhibit the phenomenon of mutarotation?

1) (+) Sucrose
2) (+) Lactose
3) (+) Maltose
4) (-) Fructose

Q.11. The total number of atomic orbitals in fourth energy level of an atom is

1) 4
2) 8
3) 16
4) 32

Q.12. The electrode potentials for Cu_(aq)²⁺ + e^- -> Cu_(aq)²⁺ and Cu_(aq)²⁺ + e^- -> Cu(s) are +0.15 V and +0.50 V respectively. The value of ^EUCu²⁺ / Cu

1) 0.150V
2) 0.500V
3) 0.325V
4) 0.650V

Q.13. Mole fraction of the solute in a 1.00 molar aqueous solution is

1) 1.7700
2) 0.1770
3) 0.0177
4) 0.0344

Q.14. By what factors does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?

1) 1.4
2) 2.0
3) 2.8
4) 4.0

Q.15. A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH₄⁺ is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 * 10^-5, what is the pH of this solution?

1) 8.73
2) 9.08
3) 9.43
4) 11.72

Q.16. CH3CHO and C6H5CH2CHO can be distinguished chemically by

1) Fehling solution test
2) Benedict test
3) Iodoform test
4) Tollen's reagent test

Q.17. p_A and p_B are the vapour pressure of pure liquid components. A and B, respectively of an ideal binary solution. If x_A represents the mole fraction of component A, the total pressure of the solution will be

1) p_B + x_A (p_A – p_B)
2) p_A + x_A (p_B – p_A)
3) p_A + x_A (p_A – p_B)
4) p_B + x_A (p_B – p_A)

Q.18. Which one of the following is not a condensation polymer?

1) Neoprene
2) Melamine
3) Glyptal
4) Dacron

Q.19. A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is :

1) 204 pm
2) 288 pm
3) 408 pm
4) 144 pm

Q.20. Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?

A) BeCl₂
B) BaCl₂
C) AlCl₃
D) LiCl

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Answer Key: 

Q.1-	4	Q.2-	4	Q.3-	1	Q.4-	4	Q.5-	3
Q.6-	2	Q.7-	1	Q.8-	4	Q.9-	2	Q.10-	1
Q.11-	3	Q.12-	3	Q.13-	3	Q.14-	1	Q.15-	3
Q.16-	3	Q.17-	1	Q.18-	1	Q.19-	2	Q.20-	2

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We have tried our best to present important questions with correct answer key. Any suggestion or update about any erroneous entry or answer is always appreciable. Please comment your score or any suggestion in comment section below.

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