2017 JEE Chemistry Solved paper

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Previous Year Paper Chemistry - 2017
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Chemistry JEE 2017
Exam Year 2017
Study, Assignments, Solved Previous Year Papers .
Questions and Answers. Free Forever.

• Multiple Choice Questions
• ? U is equal to
• Isochoric work Isobaric work Adiabatic work
  Isothermal work
• Answer
• The radius of the second Bohr orbit for the
  hydrogen atom is
• (Plank's const. h 6.6262 1034 Js mass of
  electron 9.1091 1031 kg charge of electron
  e 1.60210 1019 C permittivity of vacuum
• ?0 8.854185 1012 kg1 m3 A2) 1.65Å
• 4.76Å
• 0.529Å
• 2.12Å
• Answer
• pKa of a weak acid (HA) and pKb of a weak base
  (BOH) are 3.2 and 3.4, respectively. The pH of
  their salt (AB) solution is
• 7.2
• 6.9
• 7.0
• 1.0
• Answer
• The most abundant element by mass in the body of
  a healthy human adult are

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Chemistry JEE 2017
Exam Year 2017
Study, Assignments, Solved Previous Year Papers .
Questions and Answers. Free Forever.

• (b) ZnO CO2 ? ZnCO3
• base and acid base and base acid and acid acid
  and base
• Answer
• Given
• C(grahite) O2(g) ? CO2(g)
• ? -1
• rH - 393.5 kJ mol
• H2(g) 1/2O2(g) ? H2O (l)
• ? -1
• rH 890.3 kJ mol
• Based on the above thermochemical equations, the
  value of ?rH at 298 K for the reaction
  C(grahite) 2H2(g) ?CH4 will be
• 74.8 kJ mol1
• 144.0 kJ mol1
• 74.8 kJ mol1
• 144.0 kJ mol1 Answer
• The group having isoelectronic species is

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Chemistry JEE 2017
Exam Year 2017
Study, Assignments, Solved Previous Year Papers .
Questions and Answers. Free Forever.
9. Which of the following molecules is least
resonance stabilized?
Answer 10. A water sample has ppm level
concentration of following anions
F- 10 SO 2- 100 NO - 50 4 3
the anion/anions that make/makes the water sample
unsuitable for drinking is /are only NO
- 3 both 2 SO - and NO - 4 3 only F only
SO 2- 4 Answer 11. A metal crystallises in a face
centred cubic structure. If the edge length of
its unit cell is'a', the closest approach
between two atoms in metallic crystal will be 2a
Answer 12. Two reactions R1 and R2 have identical
pre-exponential factors. Activation energy of R1
exceeds that of R2 by 10 kJ mol1. If k and k
are rate constants for reactions R and R
respectively at 300 K, then ln(k /k )
is 1 2 1 2 2 1
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Chemistry JEE 2017
Exam Year 2017
Study, Assignments, Solved Previous Year Papers .
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• equal to-
• (R 8.314 J mol1K1)
• 8
• 12
• 6
• 4
• Answer
• The Tyndall e?ect is observed only when following
  conditions are satis?ed-
• The diameter of the dispersed particles is much
  smaller than the wavelength of the light used.
• The diameter of the dispersed particle is not
  much smaller than the wavelength of the light
  used.
• The refractive indices of the dispersed
  phase and dispersion medium are almost similar
  in magnitude.
• The refractive indices of the dispersed phase
  and dispersion medium di?er greatly in
  magnitude.
• and (d)
• and (d)
• and (c)
• and (c) Answer
• Which of the following reactions is an example of
  a redox reaction? XeF4 O2F2 ? XeF6 O2

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Chemistry JEE 2017
Exam Year 2017
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• HCOONa
• Na2C2O4 CH3COONa
• Answer
• Which of the following species is not
  paramagnetic NO
• CO O2
• B2
• Answer
• The freezing point of benzene decreases by 0.45C
  when 0.2 g of acetic acid is added to 20 g of
  benzene. If acetic acid associates to form a
  dimer in benzene, percentage association of
  acetic acid in benzene will be (K 1
• f for benzene 5.12 K kg mol )
• 64.6
• 80.4
• 74.6
• 94.6
• Answer
• On treatment of 100 mL of 0.1 M solution of CoCl
  . 6H O with excess AgNO 1.2 1022 ions are
• 3 2 3
• precipitated. The complex is Co(H2O)4
  Cl2Cl.2H2O
• Co(H2O)3Cl3.3H2O Co(H2O)6Cl3
  Co(H2O)5ClCl2.H2O

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Chemistry JEE 2017
Exam Year 2017
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Among the following, the strongest reducing agent
is Cr Mn2 Cr3 Cl- Answer 22. Which of the
following compounds will the signi?cant amount of
meta product during mono-nitration reaction?
Answer 23. The increasing order of the reactivity
of the following halides for the SN1 reaction is
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Chemistry JEE 2017
Exam Year 2017
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• (III) lt (II) lt (I)
• (II) lt (I) lt (III)
• lt (III) lt (II)
• lt (III) lt (I) Answer
• The formation of which of the following polymers
  involves hydrolysis reaction? Nylon 6
• Bakelite Nylon 6, 6 Terylene
• Answer
• Which of the following, upon treatment with
  tert-BuONa followed by addition of bromine water,
  fails to decolourize the colour of bromine?

Answer 26. 3-Methyl-pent-2-ene on reaction with
HBr in presence of peroxide forms an addition
product.The number of possible stereoisomers for
the product is Six Two
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Chemistry JEE 2017
Exam Year 2017
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Zero Four Answer 27. The correct sequence of
reagents for the following conversion will be
Ag(NH3)2 OH , H /CH3OH,
CH3MgBr CH 3MgBr, H /CH3OH, Ag(NH3)2
OH CH 3MgBr, Ag(NH3)2 OH , H
/CH3OH Ag(NH ) OH, CH MgBr, H/CH OH 3
2 3 3 Answer 28. Which of the following
compounds will behave as a reducing sugar in an
aqueous KOH solution?
Answer
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Chemistry JEE 2017
Exam Year 2017
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29. The major product obtained in the following
reaction is
t C6H5CH (O Bu) CH2C6H5 C6H5CHCHC6H5 ()C H
CH(OtBu)CH H 6 5 2 5 ()C H CH(OtBu)CH C
H 6 5 2 6 5 Answer 30. The major product
obtained in the following reaction is
Answer
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