AIPMT 2015 Chemistry Model Test Paper - 2
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
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 PO43- , of S in SO42- and that of Cr in Cr2O72- are respectively:
1) + 3, + 6 and + 5
2) + 5, + 3 and + 6
3) - 3, + 6 and + 6
4) + 5, + 6 and + 6
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
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
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
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
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+
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
2) 4.00*10-7 M3
3) 5.00*10-6 M3
4) 5.00*10-7 M3
Q.9. For the reaction
N2O5(g) -> 2No2(g) + 1/2O2(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
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
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
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
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
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
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
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
2) Benedict test
3) Iodoform test
4) Tollen's reagent test
Q.17. pA and pB are the vapour pressure of pure liquid components. A and B, respectively of an ideal binary solution. If xA represents the mole fraction of component A, the total pressure of the solution will be
1) pB + xA (pA – pB)
2) pA + xA (pB – pA)
3) pA + xA (pA – pB)
4) pB + xA (pB – pA)
2) pA + xA (pB – pA)
3) pA + xA (pA – pB)
4) pB + xA (pB – pA)
Q.18. Which one of the following is not a condensation polymer?
1) Neoprene
2) Melamine
3) Glyptal
4) Dacron
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
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
B) BaCl2
C) AlCl3
D) LiCl
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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