2016 JEE Chemistry Solved paper

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Previous Year Paper Chemistry - 2016
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Chemistry JEE 2016
Exam Year 2016
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Multiple Choice Questions 1. A stream of
electrons from a heated ?lament was passed
between two charged plates kept at a potential
di?erence V esu. If e and m are charge and mass
of an electron, respectively, then the value of
h/? (where ? is wavelength associated with
electron wave) is given by 2meV

• mev
• Answer
• The heats of combustion of carbon and carbon
  monoxide are -393.5 and -283.5 kJ mol-1,
  respectively. The heat of formation (in kJ) of
  carbon monoxide per mole is
• 676.5
• -676.5
• -110.5
• 110 s
• Answer
• The species in which the N atom is in a state of
  sp hybridization is
• NO -
• 2
• NO -
• 3
• NO2

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Chemistry JEE 2016
Exam Year 2016
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Sc Rb Answer 6. Two closed bulbs of equal volume
(V) containing an ideal gas initially at pressure
pi and temperature T1 are connected through a
narrow tube of negligible volume as shown in the
?gure below. The temperature of one of the bulbs
is then raised to T2. The ?nal pressure pf is
Answer 7. The hottest region of Bunsen ?ame shown
in the ?gure below is
region 2 region 3 region 4 region 1
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Chemistry JEE 2016
Exam Year 2016
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• Answer
• The distillation technique most suited for
  separating glycerol from spent-lye in the soap
  industry is fractional distillation
• steam distillation
• distillation under reduced pressure simple
  distillation
• Answer
• At 300 K and 1 atm, 15 mL of a gaseous
  hydrocarbon requires 375 mL air containing 20 O2
  by volume for complete combustion. After
  combustion the gases occupy 330 mL. Assuming that
  the water formed is in liquid form and the
  volumes were measured at the same temperature and
  pressure, the formula of the hydrocarbon is
• C3H8 C4H8
• C4H12
• C3H6
• Answer
• Which one of the following statements about water
  is false? Water can act both as an acid and as a
  base.
• There is extensive intramolecular hydrogen
  bonding in the condensed phase. Ice formed by
  heavy water sinks in normal water.
• Water is oxidized to oxygen during
  photosynthesis.
• Answer
• The concentration of ?uoride, lead, nitrate and
  iron in a water sample from an underground lake
  was found to be 1000 ppb, 40 ppb, 100 ppm and
  0.2 ppm, respectively. This water is unsuitable
  for drinking due to the high concentration of
• Lead Nitrate Iron Fluoride
• Answer
• The main oxides formed on combustion of Li, Na
  and K in excess of air are, respectively LiO2,
  Na2O2 and K2O
• LiO2, Na2O2 and KO2 LiO, Na2O2 and KO2

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Chemistry JEE 2016
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• LiO, Na2O and KO2
• Answer
• Which of the following compounds is metallic and
  ferromagnetic? VO2
• MnO2 TiO2 CrO2
• Answer
• For a linear plot of log (x/m) versus log p in a
  Freundlich adsorption isotherm, which of the
  following statements is correct? (k and n are
  constants)
• 1/n appears as the intercept. Only 1/n appears
  as the slope.
• log (1/n) appears as the intercept.
• Both k and 1/n appear in the slope term Answer
• 18 g glucose (C6H12O6 ) is added to 178.2 g
  water. The vapor pressure of water (in torr) for
  this aqueous solution is
• 76.0
• 752.4
• 759.0
• 7.6
• Answer
• Decomposition of H2O2 follows a ?rst order
  reaction. In ?fty minutes the concentration of
  H2O2 decreases from 0.5 to 0.125 M in one such
  decomposition. When the concentration of H2O2
  reaches 0.05 M, the rate of formation of O2 will
  be
• 6.9310-4 mol min-1
• 2.66 L min-1 at STP 1.3410-2 mol min-1
  6.9310-2 mol min-1

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Chemistry JEE 2016
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• 2 2
• Cr(H2O)6 and Fe(H2O)6
• Mn(H O) 2 and Cr(H O) 2 2 6 2 6
• CoCl 2- and Fe(H O) 2 4 2 6
• Cr(H O) 2 and CoCl 2- 2 6 4
• Answer
• Which one of the following ores is best
  concentrated by froth ?otation method? Siderite
• Galena Malachite Magnetite
• Answer
• The pair in which phosphorous atoms have a formal
  oxidation state of 3 is Pyrophosphorous and
  hypophosphoric acids
• Orthophosphorous and hypophosphoric acids
  Pyrophosphorous and pyrophosphoric acids
  Orthophosphorous and pyrophosphorous acids

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Chemistry JEE 2016
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Zn Pb Answer 23. 2-chloro-2-methylpentane on
reaction with sodium methoxide in methanol yields

• Both a and c
• Only c
• Both a and b All of these
• Answer
• Which of the following statements about
  low-density polythene is false? It is a poor
  conductor of electricity
• Its synthesis requires dioxygen or a peroxide
  initiator as a catalyst. It is used in the
  manufacture of buckets, dustbins etc.
• Its synthesis requires high pressure.
• Answer
• Which of the following is an anionic detergent?
  Sodium lauryl sulphate
• Cetyltrimethyl ammonium bromide Glyceryl oleate
• Sodium stearate Answer
• The absolute con?guration of

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Chemistry JEE 2016
Exam Year 2016
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• is
• (2S, 3R)
• (2S, 3S)
• (2R, 3R)
• (2R, 3S)
• Answer
• Thiol group is present in Cystine
• Cysteine Methionine Cytosine
• Answer
• In the Hofmann bromamide degradation reaction,
  the number of moles of NaOH and Br2 used per mole
  of amine produced are
• Four moles of NaOH and two moles of Br2
• Two moles of NaOH and two moles of Br2 Four
  moles of NaOH and one mole of Br2 One mole of
  NaOH and one mole of Br2
• Answer
• The reaction of propene with HOCl(Cl2H2O)
  proceeds through the intermediate
• CH -CH-CH -Cl
• 3 2

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Chemistry JEE 2016
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Answer
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