QUESTION PAPER WITH SOLUTIONS OF JEE MAIN - 2016 (HELD … · QUESTION PAPER WITH SOLUTIONS OF JEE...

8
H.O : JABALPUR : 1525, Wright Town, Ph. (0761) 4218116, 2400022, 8349992509, RAMPUR : Rampur Chowk, Above PNB RANJHI : Opp. Jain Mandir, Main Road, Ranjhi follow us on : momentumacademy www.momentumacademy.com momentumacademy Page 1 31. At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% 2 O 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 : (1) 3 6 CH (2) 3 8 CH (3) 4 8 CH (4) 4 10 CH 31. (Bonus or 2) If volume of hydrocarbon and volume of 2 O is considered (Excluding volume of 2 CO ) then we can determine molecular formula of hydrocarbon. 75ml () l 15 mL 20% V = 330 mL From air 300 T K = , 1 P atm = 3 8 2 2 2 5 3 4 CH O CO HO + ® + Hydrocarbon = 3 8 CH ( Question is of Physical chemistry Stoichiometry ; ) 32. Two closed bulbs of equal volume V containing as ideal gs initially at pressure i p and tempeature 1 T 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 2 T . The final pressure f p is : CHEMISTRY (SET - E) Our Top class IITian faculty team promises to give you an authentic solutions which will be fastest in the whole country. FEEL THE POWER OF OUR KNOWLEDGE & EXPERIENCE QUESTION PAPER WITH SOLUTIONS OF JEE MAIN - 2016 (HELD ON 3rd APRIL SUNDAY 2016) Þ (1) 1 2 1 2 i TT p T T æ ö ç ÷ + è ø (2) 1 1 2 2 i T p T T æ ö ç ÷ + è ø (3) 2 1 2 2 i T p T T æ ö ç ÷ + è ø (4) 1 2 1 2 2 i TT p T T æ ö ç ÷ + è ø 32.(3) Total mole = 1 2PiV RT = 1 2 1 2 f f i PV PV PV RT RT RT + = 1 2 1 2 1 2 i f P T T P TT T + æ ö = = ç ÷ è ø 2 1 2 2 i f PT P T T = + \ (3) is correct answer ( Question is of Physical chemistry; Gaseous state; ) 33. A stream of electrons from a heated filament was passed 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

Transcript of 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 :

CHEMISTRY (SET - E)

Our Top class IITian faculty team promises to give you an authentic solutions which will befastest in the whole country.

FEEL THE POWER OF OUR KNOWLEDGE & EXPERIENCE

QUESTION PAPER WITH SOLUTIONS OF JEE MAIN - 2016

(HELD ON 3rd APRIL SUNDAY 2016)

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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