JEE Main 2014 Online Question Paper for Exam held on 9 Apr 2014
QUESTION PAPER WITH SOLUTIONS OF JEE MAIN - 2016 (HELD … · QUESTION PAPER WITH SOLUTIONS OF JEE...
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31. At 300 K and 1 atm, 15 mL of a gaseoushydrocarbon requires 375 mL air containing 20%
2O by volume for complete combustion. After
combustion the gases occupy 330 mL. Assumingthat the water formed is in liquid form and thevolumes were measured at the same temperatureand pressure, the formula of the hydrocarbon is :
(1) 3 6C H (2) 3 8C H
(3) 4 8C H (4)
4 10C H
31. (Bonus or 2)
If volume of hydrocarbon and volume of 2O is
considered (Excluding volume of 2CO ) then we
can determine molecular formula of hydrocarbon.
75ml
( )l
15 mL 20% V = 330 mL
From air
300T K= , 1P atm=
3 8 2 2 25 3 4C H O CO H O+ ® +
Hydrocarbon = 3 8C H
( Question is of Physical chemistry
Stoichiometry ; )
32. Two closed bulbs of equal volume V containing
as ideal gs initially at pressure ip and tempeature
1T are connected through a narrow tube of
negligible volume as shown in the figure below.The temperature of one of the bulbs is then raised
to 2T . The final pressure fp is :
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Þ
(1) 1 2
1 2
i
TTp
T T
æ öç ÷+è ø
(2) 1
1 2
2 i
Tp
T T
æ öç ÷+è ø
(3) 2
1 2
2 i
Tp
T T
æ öç ÷
+è ø(4)
1 2
1 2
2 i
TTp
T T
æ öç ÷
+è ø
32.(3)
Total mole = 1
2PiV
RT=
1 2 1
2f f iP V P V PV
RT RT RT+ =
1 2
1 2 1
2 if
PT TP
TT T
+æ ö= =ç ÷è ø
2
1 2
2 if
PTP
T T=
+
\(3) is correct answer
( Question is of Physical chemistry; Gaseous
state; )
33. A stream of electrons from a heated filament waspassed between two charged plates kept at a
potential difference V esu. If e and m are charge
and mass of an electron, respectively, then the
value of /h l (Where l is wavelength associated
with electron wave) is given by :
(1) meV (2) 2meV
(3) meV (4) 2meV
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33.(4)2
h
meVl =
2h
meVl=
\(4) is correct answer
( Question is of Physical chemistry ; Atomic
structure ; )
34. The species in which the N atom is in a state of
sp hybridization is :
(1)2NOÅ (2)
2NOQ
(3) 3NOQ (4)
2NO
34. (1) In 2NOÅ , nitrogen is sp hybridised
\(1) is correct answer
( Question is of Inorganic chemistry ;
Chemical bonding ; )
35. The heats of combustion of carbon and carbon
monoxide are 393.5- and 1283.5kJ mol-- ,
respectively. The heat of formation (in kJ ) of
carbon monoxide per mole is :
(1) 110.5 (2) 676.5
(3) 676.5- (4) 110.5-
35.(4)2 2C O CO+ ® ; 393.5 /KJ mole-
2 2
1
2CO O CO+ ® ; 283.5 /KJ mole-
2
1
2C O CO+ ®
\(4) is correct answer
( Question is of Physical chemistry ; chemical
Energetics ; )
36. 18 g glucose 6 12 6C H O is added to
178.2 g water . The vapour pressure of water
(in torr) for this aqueous solution is :
(1) 7.6 (2) 76.0
(3) 752.4 (4) 759.0
36. (3) Here temperature is not given, But
If 100t C= ° (considered) then
0
0
A
B
A
P Px
P
-=
18760 1100
18 178.2 760 100180 18
P-= =
+
11
760 100
P- =
99760 752.4
100P = ´ =
\(3) is correct answer
( Question is of Physical chemistry; Liquid
solution; )
37. The equilibrium constant at 298 K for a reaction
A B C D+ +ƒ is 100. If the initial
concentration of all the four species were 1 M
each, then equilibrium concentration of D
(in 1mol L- ) will be :
(1) 0.182 (2) 0.818
(3) 1.818 (4) 1.182
37.(3)1 1 1 1
A B C D
x x x x
+ +
- - + +
ƒ
2
2
1100
1
x
x
+=
-
110
1
x
x
+=
-
91 10 10
11x x x+ = - Þ =
9 20111 11
D = + =
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\(3) is correct answer
( Question is of Physical chemistry; Chemical
Equilibrium; )
38. Galvanization is applying a coating of :
(1) Pb (2) Cr
(3) Cu (4) Zn
38.(4) Factual question
\(4) is correct answer
( Question is of Inorganic chemistry;
Metallurgy; )
39. Decompostion of 2 2H O follows a first order
reaction. In fifty minutes the concentration of
2 2H O decreases from 0.5 to 0.125 M in one such
decomposition. When the concentration of 2 2H O
reaches 0.05 M, the rate of formation of 2O will
be :
(1) 2 16.93 10 molmin- -´
(2) 4 16.93 10 molmin- -´
(3) 12.6Lmin- at STP
(4) 2 11.34 10 molmin- -´
39.(2) 1/2
5025min
2t = =
0.693
25K =
rate of disapp. of 2 2H O
0.6930.05
25= ´
2 2 2
2
[ ]2
d H O d O
dt dt- =
\42 1 0.693 0.05
6.93 102 2
d O
dt-´
= ´ = ´
\(2) is correct answer
( Question is of Physical chemistry; Chemical
Kinetics; )
40. For a linear plot of log /x m versus log p in a
Freundlich adsorption isotherm, which of thefollowing statements is correct ?
( k and n are constants)
(1) Both k and 1 / n appear in the slope term
(2) 1 / n appears as the intercept
(3) Only 1 / n appears as the slope
(4) log 1 / n appears as the intercept
40.(3)
1
nx
KPm=
1log log log
xP K
m n= +
\(3) is correct answer
( Question is of Physical chemistry; Surface
Chemistry; )
41. Which of the following atoms has the highestfirst ionization energy
(1) Rb (2) Na
(3) K (4) Sc
41.(4)
Along the period ionisation energy increases
\ Highest first . .I E , 1 23 4Sc d s=
\(4) is correct answer
( Question is of Inorganic chemistry ; Periodic
table; )
42. Which one of the following ores is bestconcentrated by froth floation method ?
(1) Magnetite (2) Siderite
(3) Galena (4) Malachite
42.(3) Galena (Factual question)
\(3) is correct answer
( Question is of Inorganic chemistry ;
Metallurgy; )
43. Which one of the following statements aboutwater is FALSE ?
(1) Water is oxidized to oxygen durig photosythesis.
(2) Water can act both as an acid and as a base
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(3) There is extensive intramolecular hydrogen bonding in the condensed phase.
(4) Ice formed by heavy water sinks in normal water.
43.(3) Wrong statement is “There is extensiveintramolecular hydrogen bonding in thecondensed phase”
\(3) is correct answer
( Question is of Inorganic chemistry ; Hydrogen
and its compounds; )
44. The main oxides formed on combustion of
Li , Na andK in excess of air are, respectively :
(1) 2 2,Li O Na O and
2KO
(2) 2 2 2,LiO Na O and 2K O
(3) 2 2 2 2,Li O Na O and 2KO
(4) 2 2 2,Li O Na O and 2KO
44.(4) 2 24 2Li O Li O+ ®
2 2 24 2 2Na O Na O+ ®
2 2K O KO+ ®
\(4) is correct answer
( Question is of Inorganic chemistry ; S-Block
elements; )
45. The reaction of zinc with dilute and concentratednitric acid, respectively produces
(1) 2N O and
2NO (2) 2NO and NO
(3) NO and 2N O (4)
2NO and 2N O
45.(1) With very dilute 3HNO
3 3 2 4 34 10 4 ( )Zn HNO Zn NO NH NO+ ® +
23H O+
With dilute 3HNO
With conc.3HNO
3 3 2 2 24 ( ) 2 2Zn HNO Zn NO NO H O+ ® + +
\(1) correct answer..
( Question is of Inorganic chemistry ; d-Block
elements; )
46. The pair in which phosphorous atoms have formaloxidation state of +3 is :
(1) orthophosphorous and pyrophosphorous acids
(2) Pyrophosphorous and hypophosphoric acids(3) Orthophosphorous and hypophosphoric acids
(4) Pyrophosphorous and pyrophosphoric acids
46.(1) Orthophosphorous and pyrophosphorous acid
\(1) correct answer..
( Question is of Inorganic chemistry; P-block
elements; )
47. Which of the following compounds is metallic andferromagnetic ?
(1) 2TiO (2) 2CrO
(3) 2VO (4) 2MnO
47.(2) 2CrO ferromagnetic and metallic oxide
\(2) is correct answer
( Question is of Inorganic chemistry; Transition
metals/Solid state; )
48. The pair having the same magnetic moment is :
[At.No.: 24, 25, 26, 27Cr Mn Fe Co= = = = ]
(1) 22 6[ ( ) ]Cr H O + and 2
4[ ]CoCl -
(2) 22 6[ ( ) ]Cr H O + and 2
2 6[ ( ) ]Fe H O +
(3) 22 6[ ( ) ]Mn H O + and 2
2 6[ ( ) ]Cr H O +
(4) 24[ ]CoCl - and 2
2 6[ ( ) ]Fe H O +
48.(2) Cr 5 13 4d s
Mn 5 23 4d s
Fe 6 23 4d s
Co 7 23 4d s
1. 2 43Cr d+ ® , 2 73Co d+ ®
2. 2 43Cr d+ ® , 2 63Fe d+ ®
3. 2 53Mn d+ ® , 2 43Cr d+ ®
4. 2 73Co d+ ® , 2 63Fe d+ ®
\(2) is correct answer
( Question is of Inorganic
chemistry;Coordination compounds ; )
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49. Which one of the following complexes showsoptical isomerism ?
(1) 3 3 3[ ( ) ]Co NH Cl
(2) 2 2[ ( ) ]cis Co en Cl Cl
(3) 2 2[ ( ) ]trans Co en Cl Cl
(4) 3 4 2[ ( ) ]Co NH Cl Cl
(en =ethylenediamine)
49.(2) cis 2 2( )Co en Cl Cl will show optical
isomerism
\(2) is correct answer
( Question is of Inorganic chemistry;
Coordination compounds ; )
50. The concentration of fluoride, lead, nitrate andiron in a water sample from an underground lake
was found to be 1000 , 40 , 100ppb ppb ppm
and 0.2 ppm respectively This water is unsuitable
for drinking due to high concentration of :
(1) Fluoride (2) Lead
(3) Nitrate (4) Iron
50.(3) 1000 1F ppb ppmQ = =
2 40 0.04Pb ppb+ + =
3 100NO ppmQ =
0.2Fe ppm=
\(3) is correct answer
( Question is of Physical chemistry;
concentration terms; ).
51. The distillation technique most suited forseparating glycerol from spent-lye in the soapindustry is :
(1) Simple distillation
(2) Fractional distillation
(3) Steam distillation
(4) Distillation under reduced pressure
51.(4) Glycerol (Glycerine) is one such compoundwhich decomposes at its boiling point
\Distillation under reduced pressure techniquecan be used to separate glycerol from spentlye \ (4) is correct answer
( Question is of Organic chemistry; Practical
organic chemistry; ).
52. The product of the reaction given below is :
2 2 3
1. /
2. /
NBS hv
H O K COX¾¾¾¾¾®
(1) (2)
(3) (4)
52.(2) NBS¾¾¾®
\ (2) is correct answer
( Question is of Organic chemistry; Reaction
mechanism ; ).
53. The absolute configuration of
is :
(1) (2 , 3 )R S (2) (2 , 3 )S R
(3) (2 , 3 )S S (4) (2 , 3 )R R
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53.(2)
i.e. ( 2 ,3S R ) are correct
\ (2) is correct answer
( Question is of Organic chemistry;
stereochemistry; )
54. 2-Chloro-2-methylpentane on reaction withsodium methoxide in methanol yields :
(a)
(b)
(c)
(1) All of these (2) (a) and (c)
(3) (c) only (4) (a) and (b)
54.(1)
Q 3CH O NaQ Å- is given (Strong base)
\elimation is preferable
and +
are minor products but because in aboveproblem major product is not asked thereforeall are correct answers
\ (1) is correct answer
( Question is of Organic chemistry; reaction
mechanism; )
55. The reaction of propene with HOCl 2 2( )Cl H O+
proceeds through the intermediate
(1) 3 2CH CH CH OHÅ- - -
(2) 3 2CH CH CH ClÅ- - -
(3) 3 2( )CH CH OH CH +- -
(4) 3 2CH CHCl CH +- -
55.(2)3 2CH CH CH- =
\ (2) is correct answer
(Question is of Organic chemistry; Reaction
mechanism ; )
56. In the Hofmann’s Bromamide degradation
reaction, the number of moles of NaOH and
2Br used per mole of amine produced are :
(1) One mole of NaOH and one mole of 2Br .
(2) Four moles of NaOH and two moles of 2Br .
(3) Two moles of NaOH and two moles of 2Br
(4) Four moles of NaOH and one mole of 2Br
56.(4) Hofmann’s Bromamide reaction
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3 2 2 2 32 2CH NH NaBr H O Na CO- + + +
i.e. one mole of 2Br and 4 moles of NaOH
\ (4) is correct answer
(Question is of Organic chemistry ; Nitrogen
containing comp.; )
57. Which of the following statements about lowdensity polythene is FALSE ?
(1) Its synthesis requires high pressure.
(2) It is a poor conductor of electricity.
(3) Its synthesis requires dioxygen or a peroxide initiator as a catalyst.
(4) It is used in the manufacture of buckets, dust-bins etc.
57.(4) 2 2nCH CH= 473 ,1500K atm
oxygen¾¾¾¾¾®
used to for packing, cable, insulation, pipes,squeeze bottles and toys.
\ (4) is correct answer..
( Question is of Organic chemistry; Polymers;
)
58. Thiol group is present in :
(1) Cytosine (2) Cystine
(3) Cysteine (4) Methionine
58.(3) In Cysteine (a -Amino acid)
thiol group is present
\ (3) is correct answer
(Question is of Organic chemistry; Protein; )
59. Which of the following is an anionic detergent ?
(1) Sodium stearate
(2) Sodium lauryl sulphate
(3) Cetyltrimethyl ammonium bromide
(4) Glyceryl oleate
59.(2) ®
\ (2) is correct answer
(Question is of Organic chemistry; Chemistry
in day to day life; )
60. The hottest region of Bunsen flame shown in thefigure below is :
(1) region 1 (2) region 2
(3) region 3 (4) region 4
60.(2)
\ (2) is correct answer
(Question is of Inorganic chemistry; Qualitative
Analysis; )
P.T.O.
Chapterwise / Topicwise analysis of questions in Chemistry (JEE-Main 2016)
Physical chemistry = 09 Questions Easy = 14
Organic chemistry = 09 Questions Medium = 14
Inorganic chemistry = 12 Questions Tough = 02
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