1. Which of the following is a sink for CO?
(1) Micro-organisms present in the soil (2) Oceans
(3) Plants (4) Haemoglobin
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2. The element Z = 114 has been discovered recently. It will belong to which of the following family group and electronic configuration?
(1) Carbon family, [Rn] 5f146d107s27p2
(2) Oxygen family, [Rn] 5f146d107s27p4
(3) Nitrogen family, [Rn] 5f146d107s27p6
(4) Halogen family, [Rn] 5f146d107s27p5
3. For a given reaction, ΔH = 35.5 kJ mol–1 and ΔS = 83.6 JK–1 mol–1. The reaction is spontaneous at : (Assume that ΔH and ΔS do not vary with temperature)
(1) T > 425 K
(2) All temperatures
(3) T > 298 K
(4) T < 425 K
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4.
(a) 
(b) 
(c) 
(d) 
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5. Which of the following is dependent on temperature?
(1) Molarity
(2) Mole fraction
(3) Weight percentage
(4) Molality
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6. With respect to the conformers of ethane, which of the following statements is true?
(1) Bond angle changes but bond length remains same
(2) Both bond angle and bond length change
(3) Both bond angles and bond length remains same
(4) Bond angle remains same but bond length changes
7. Name the gas that can readily decolourises acidified KMnO4 solution:
(1) SO2 (2) NO2
(3) P2O5 (4) CO2
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8. It is because of inability of ns2 electrons of the valence shell to participate in bonding that
(1) Sn2+ is oxidising while Pb4+ is reducing
(2) Sn2+ and Pb2+ are both oxidising and reducing
(3) Sn4+ is reducing while Pb4+ is oxidising
(4) Sn2+ is reducing while Pb4+ is oxidising
9. Mechanism of a hypothetical reaction X2 + Y2 → 2XY is given below :
(i) X2 → X + X (fast)
(ii) X + Y2 ⇌ XY + Y (slow)
(iii) X + Y → XY (fast)
The overall order of the reaction will be
(1) 2 (2) 0
(3) 1.5 (4) 1
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NEET-UG 2015 Chemistry Question Paper with Answer Key
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10.
(a) K2
K33 /K1 (b)
K2 K3/K1
(c) K32
K3/K1 (d)
K1 K33 /K2
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11. Which one is the wrong statement?
(1) The uncertainty principle is ΔE x Δt ≥ h / 4π
(2) Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement
(3) The energy of 2s orbital is less than the energy of 2p orbital in case of Hydrogen like atoms
(4) de-Broglie’s wavelength is given by λ = h / mv, where m = mass of the particle, v = group velocity of the particle
12. Which one of the following statements is not correct?
(1) The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium
(2) Enzymes catalyse mainly bio-chemical reactions
(3) Coenzymes increase the catalytic activity of enzyme
(4) Catalyst does not initiate any reaction
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13. HgCl2 and I2 both when dissolved in water containing I– ions the pair of species formed is
(1) HgI2 , I– (2) HgI42–, I3–
(3) Hg2I2, I– (4) HgI2, I3–
14.
(1) III < I < II (2) III < II < I
(3) II < I < III (4) II < III < I
15. An example of a sigma bonded organometallic compound is
(1) Grignard’s reagent (2) Ferrocene
(3) Cobaltocene (4) Ruthenocene
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16. A 20 litre container at 400 K contains CO2 (g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the containers is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of CO2 attains its maximum value, will be
(Given that : SrCO3(s) → SrO(s) + CO2(g). Kp= 1.6 atm)
(1) 10 litre (2) 4 litre
(3) 2 litre (4) 5 litre
17. Mixture of chloroxylenol and terpineol acts as
(1) Antiseptic (2) Antipyretic
(3) Antibiotic (4) Analgesic
18. Pick out the correct statement with respect [Mn(CN)6]3–
(1) It is sp3d2 hybridised and tetrahedral
(2) It is d2sp3 hybridised and octahedral
(3) It is dsp2 hybridised and square planar
(4) It is sp3d2 hybridised and octahedral
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19.
(1) (a) – (iii) (b) – (i) (c) – (iv) (d) – (ii)
(2) (a) – (v) (b) – (iv) (c) – (iii) (d) – (ii)
(3) (a) – (iv) (b) – (iii) (c) – (ii) (d) – (i)
(4) (a) – (iii) (b) – (iv) (c) – (i) (d) – (ii)
20. The species, having bond angles of 120° is
(1) CIF3 (2) NCl3
(3) BCl3 (4) PH3