JAM 2026 Question Paper Chemistry (CY)

JAM 2026 Confidential Chemistry (CY)

Section A: Q.1 – Q.10 Carry ONE mark each.

Q.1 The molecule that gets inter-converted into its enantiomer, upon ring flipping in
its chair conformation, is ____________.

(A) cis-1,2-dimethylcyclohexane

(B) cis-1,3-dimethy
ethylc
lcyc
yclo
yc lohe
hexane
cis-1,3-dimethylcyclohexanene

(C) cis-1,4-dimethy
ethy
hylc
hylcyclohexa
lc xane
xane
cis-1,4-dimethylcyclohexane

(D) trans-1,2-dim
imet
ethy
ethylcyclohe
hy hexa
hexane
xa
trans-1,2-dimethylcyclohexane

Q.2 In DNA, thee nu
numb
number
mber
mber ooff hydr
hydrogen
drog
drogen
ogen bonds
ds that hold
hold each adenine-thymine
aden
adenin
enine-
in e-th
e- base pair
and each guanine-cytosine
uani
nine
nine-c
ne -cyt
-c ytos
ytosine base
os base p
pai
pair,
air,
ai r, respectively,
rres
espe
pect
pe ctiv
ctivel
ively,
ely, are
are ________.
_______
___.
__

(A) 3 and 3

(B) 2 and 2

(C) 2 and 3

(D) 3 and 2

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JAM 2026 Confidential Chemistry (CY)

Q.3 The correct relationship between the molecules X and Y is that, they are _____.

(A) regioisomers
regioissome
mers
me rs

(B) diastere
diastereomers
reom
omer
omerss
er

(C) enantiom
enantiomers
omer
omerss
er

(D) identical
identiccal mo
mole
molecules
lecu
le cule
culess
le

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JAM 2026 Confidential Chemistry (CY)

Q.4 The major product W formed in the following reaction is

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.5 Ellingham diagram is a plot of ______________.

(A) DfHo versus temperature

(B) DfGo versus time

(C) DfGo versus temperature
teem
tem
empe
perature
pe

(D) DfHo versus time
tiim
tim
imee

Q.6 The major prod
pro
product
oduc
od uct fo
uc formed
ed from
ffro
rom
ro m the
th reaction
re between
bet
betwe
ween B2H6 aand
we nd two equivalents
of NH3 at 300 ℃ is

(A) BH3٠NH3

(B) [NH4]+ [BH4] ‒

(C) [(H3N)2BH]2+ 2[BH4]‒

(D) (HBNH)3

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JAM 2026 Confidential Chemistry (CY)

Q.7 The metal that is used as a catalyst in the synthesis of (CH3)2SiCl2 in Rochow-
Müller process is

(A) Cu

(B) Zn

(C) Sn

(D) Fe

Q.8 The molecule
cule ttha
that
hatt ha
ha hass ONLY
ONLY o
one
ne lone
llon
onee pair
on pair o
off el
elec
electrons
ectr
tron
tronss on xen
on xenon
enon is
en

(A) XeF2

(B) XeF4

(C) XeO2F2

(D) XeO3F2

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JAM 2026 Confidential Chemistry (CY)

Q.9 For first-order diffraction, the smallest value of dhkl that can be detected with
X-ray having a wavelength of 1.54 Å is _____ Å.

(A) 0.38

(B) 0.77

(C) 1.02

(D) 2.05

$ ,*
) '%
Q.10 For an ideal
al ggas,
gas
as,, th
as thee is
isothe
herm
he rmal
rmal ccom
isothermal ompr
ompres
pr essi
sibi
bility &'
lity
compressibility # +& .) %* is
!$" = (
% ,- $
* '(
"

(A) 1

(B) 1
!

(C) "#

(D) "#!

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JAM 2026 Confidential Chemistry (CY)

Section A: Q.11 – Q.30 Carry TWO marks each.

The Lennard-Jones (LJ) potential of interaction between two molecules as a
Q.11
9 ); 9 >
function of distance /02, is given by 345 /02 = 67 8+ . ( < + . ?, where 7 and
: :

@ are constants. The expression of 0 at which 345 /02 reaches minimum is

E
11 ) D
(A) A C @ F E;
B

(B) G)E> @

(C) @

(D) 6)EH 7 )E>

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JAM 2026 Confidential Chemistry (CY)

Q.12 The 1H-NMR spectral data of a compound X is as follows: δ (ppm): 11.6 (s, 1H,
exchangeable with D2O), 7.60 (d, 1H, J = 7.2 Hz), 7.20 (t, 1H, J = 7.2 Hz), 6.90
(d, 1H, J = 7.2 Hz), 3.70 (s, 3H), 3.58 (s, 3H). Based on the spectral data, choose
the appropriate structure for compound X.

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.13 The major products M and N formed in the following reaction sequence are

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.14 The major products X and Y formed in following reaction sequence are

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.15 A mono-substituted aromatic compound P decolourizes bromine water, gives a
purple red colour with aqueous FeCl3 and is also soluble in aqueous NaOH.
Compound P undergoes acetylation with reagent Q in the presence of a base to
give R as the major product. Reagent Q displays two characteristic bands at
1830 cm‒1 and 1750 cm‒1 in its IR spectrum. P, Q and R are

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.16 The major product P formed in the following transformation is

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.17 The molecules that possess σ (plane of symmetry) as the ONLY element of
symmetry are

(A) II and IV

(B) I and IV

(C) III and IV

(D) I and III

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JAM 2026 Confidential Chemistry (CY)

Q.18 Reaction that yields P as the major product is

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.19 D-Glucose (structure given below) and its stereoisomers undergo oxidation with
conc. HNO3 to give the corresponding dicarboxylic acids. The number of
stereoisomers of glucose that would give meso-dicarboxylic acid is

(A) 2

(B) 4

(C) 6

(D) 8

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JAM 2026 Confidential Chemistry (CY)

Q.20 Among the following, the one that has the lowest melting point is

(A) LiBr

(B) AlBr3

(C) NaBr

(D) MgBr2

The correct orde
order
derr of F—M—F
de F—M
F—M—
—M—F bond
—F bon
b ond
on d angle
angl
angle of compounds
com
ompo
poun
po unds
unds given
giv
given
iv en in the options is
Q.21
(where M re
epre
rese
re sent
ntss the ce
nt
represents cent
ntra
ntrall el
ra
central elem
emen
ement)
en
element)

(A) XeF2 > BF3 > OF2 > [NF4]+

(B) XeF2 > BF3 > [NF4]+ > OF2

(C) BF3 > XeF2 > [NF4]+ > OF2

(D) XeF2 > OF2 > BF3 > [NF4]+

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JAM 2026 Confidential Chemistry (CY)

Q.22 The correct order of bond length between carbon and oxygen atoms in the metal
carbonyls given in the options is

(A) Na2[Fe(CO)4] > Na[Co(CO)4] > [Ni(CO)4]

(B) [Ni(CO)4] > Na[Co(CO)4] > Na2[Fe(CO)4]

(C) Na2[Fe(CO))4] > [Ni(
[Ni(CO))4] > Na[Co(CO)
[Co( )4]

(D) [Ni(CO)4] > N
Na2[Fe(CO)
[F 4] > Na[Co(CO)
Na[C
Na[Co(
[C o(CO
o(CO))4]
CO

Q.23 The solid having
ng the
he least
llea
east
ea st packing
p ng efficiency
eeff
fficie
ff ienc
ncy is _________.
___
_____
____
______
__..
__

(A) caesium chloride
chlori
lori
ride
ride

(B) cadmium iodide

(C) zinc sulfide (wurtzite form)

(D) zinc sulfide (zinc blende form)

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JAM 2026 Confidential Chemistry (CY)

The ligand to metal charge transfer (LMCT) transition energy of the given ions
Q.24
follows the order

(A) [WO4]2‒ > [MoO4]2‒ > [CrO4]2‒

(B) [CrO4]2‒ > [MoO4]2‒ > [WO4]2‒

(C) [MoO4]2‒ > [CrO
[ rO4]2‒ > [WO4]2‒
[C

(D) [MoO4]2‒ > [WO
WO4]2‒ > [CrO4]2‒
[W

Q.25 The species tha
that
that has
has ‘T’ shape
sha
hape
ha pe is
is

(A) PCl3

(B) SOCl2

(C) BrF3

(D) [IO3] ‒

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JAM 2026 Confidential Chemistry (CY)

The correct pair in which both the complex ions show the ground state electronic
Q.26
degeneracy is

(A) [TiF6]2‒ and [Ti(H2O)6]2+

(B) [Fe(CN)6]4‒ and [Mn(CN)6]3‒

(C) [Ti(H2O)6]2+ and
nd [Mn(CN)
[[Mn
Mn(C
Mn N)6]3‒
(CN)
(C

(D) [Fe(CN)6]4‒ and
and [[TiF6]2‒

Q.27 The complex
x having
havi
ha ving
ving tthe
he low
lowest
owes
ow estt mo
es mola
molar
lar ex
la extinction
on ccoe
coefficient
oeff
oeffic
fficie
ic ient iiss
ie

(A) Na2[Ni(Br)4]

(B) [Cr(NH3)6]SO4

(C) Na2[Co(Cl)4]

(D) [Mn(H2O)6]SO4

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JAM 2026 Confidential Chemistry (CY)

"
For the reaction NO Cl ! NO + Cl , the proposed mechanism involves the
Q.28
following two elementary steps:

$%
NO Cl# ! #NO # + ##Cl

$&
NO Cl# + Cl# ! ##NO # + ## Cl

Assuming steady state approximation for Cl, the correct expression for the rate of
formation of NO is

'[NO ]
2 " [N
= 2) [NO
NO Cl]
(A)
'(

'[NO ] )"
= * , [[NO
NO Cl
Cl]
(B)
'( )

'[NO ]
= -)" + ) ..[[N
NO Cl]]
O Cl
(C)
'(

'[NO ]
= -)" ) ..[[N
NO Cl]]
O Cl
(D)
'(

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JAM 2026 Confidential Chemistry (CY)

In the van der Waals equation of state, the volume correction factor (b) arises
Q.29
from the repulsive interactions between the gas molecules. Considering the
molecules to behave as hard spheres of radius r, #b = /# × # V01345634 # × #N7 .
The value of / is _____.

[Given: N7 is the Avogadro’s Number,
V01345634 is the volume of a gas molecule]

(A) 8

(B) 2

(C) 16

(D) 4

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JAM 2026 Confidential Chemistry (CY)

For the transformation of 1 mole of an ideal gas from an initial temperature of
Q.30
27 ℃ and an initial pressure of 1 atm to a final temperature of 327 ℃ and a final
pressure of 17 atm, the change in enthalpy, 89: is ______ kJ.
[Given: Molar heat capacity of the gas is C; -J#K <" mol<" . = a# + #b#T, where
a = 20.9 JK-1mol-1, b = 0.042 JK-2mol-1 , and T is Temperature].

(A) 6.30

(B) 8.50

(C) 11.94

(D) 17.61

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JAM 2026 Confidential Chemistry (CY)

Section B: Q.31 – Q.40 Carry TWO marks each.

The possible value(s) of energy (>) obtained from setting the following
Q.31
determinant equal to zero is/are

@A> B D
? B @A> B ?
D B @A>

(A) @ + E2 B

(B) @ + B

(C) @ A E2 B

(D) @

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JAM 2026 Confidential Chemistry (CY)

Q.32 The reaction(s) that give(s) tert-butylbenzene as the major product is/are

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.33 Choose the correct statement(s) with regard to the terpenes given below.

(A) Upon ozonolysis,
noly
lysi
lysis,
sis, all the terpenes
tter
erpe
erpene
pe ness would
ne woul
wo uld
uld produce
prod
produc
oducee at least one
uc ne identical
iide carbonyl
compound

and O are geometrical
(B) Terpenes N and geome
me
metrical
me isomers

(C) Terpene O can
cannot
anno
annott undergo
no unde
un derg
de rgoo Diels-Alder
rg Diel
Diels-
el s-Al
s- Alde
Al derr reaction
de reac
acti
tion
on with
wit
w ith
ith maleic
maleic
ic anhydride
aanh
nhyd
nh

(D) Amongst all,
l, λmax for π
max for π-π* absorption
abso
ab sorp
sorption is
rp i the lo
lowe
west for
we
lowest or terpene
tter
erpe
er ne P
pene
pe

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JAM 2026 Confidential Chemistry (CY)

Q.34 The reaction(s) that yield(s) P as the major product is/are

(A)

(B)

(C)

(D)

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JAM 2026 Confidential Chemistry (CY)

Q.35 Set(s) of reagents that convert(s) benzoyl chloride to aniline is/are

(A) (i) NH3; (ii) Br2, NaOH; (iii) H2O

(B) (i) CH2N2; (ii) H2O

(C) (i) NaN3; (ii)
i) H2O

(D) (i) NH2OH; (ii)
(ii) TsCl,
T Pyridine; (iii) NaOH, Δ; (iv) H2O

Q.36 The reactions
ons of Li,
i, N
Naa an
andd K wi
with an
with n excess
ss o
off ox
oxyg
oxygen
ygen resul
yg results
ults
ul ts in
i the formation
of X, Y and Z respectively,
rres
espe
espect
pectiv
ctively, as major
iv majo
major products.
jo produc
pr ucts
ts. The
ts Th correct
corr
correc
rr ectt option(s)
ec opti
op
ption(s)
tion is/are
ti

(A) X is an oxide, Y is a peroxide and Z is a superoxide

(B) X and Y are diamagnetic but Z is paramagnetic

(C) X is an oxide, Y is a superoxide and Z is a peroxide

(D) aqueous solutions of X, Y and Z are basic in nature

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JAM 2026 Confidential Chemistry (CY)

Q.37 Choose the correct option(s) with regard to haemoglobin (Hb)

(A) Hb binds oxygen in a co-operative process

(B) The metal ion in oxy-Hb has a larger size than that in deoxy-Hb

(C) Hb takes up more oxygen at pH 7.4 than at pH 6.8

(D) The metal ion is paramagnetic
pparamagne
neti
neticc in deoxy-Hb
ti deo
deoxy
eo xy-H
xy-Hb
-Hb

Q.38 Choose the correct
cor
orre
or rect
rect statement(s)
ssta
tate
tateme
tement(s) with
me wi regard
reg
egar
ardd to the
he complexometric
ccom
ompl
omplex
plexom
exom titration of
[Ni(H2O)6]2+ ion with
ion w ithh a complexing
wit
it comp
comple
mp lexi
le ng agent
xing
xi gent Na2H2ED
aage
ge EDTA,
TA, using
EDTA
TA usin
ing
in
ngg a suitable
su indicator
conditions.
under basic co
cond
nditio
nd ions
io ns.
ns

(A) The correct choice of indicator is phenolphthalein

(B) The stoichiometry of nickel and EDTA ions in the metal complex formed between
metal and complexing agent is 1:1

(C) The binding constant for the complex formed between metal ion and complexing
agent is higher than that for the complex formed between metal ion and indicator

(D) The stoichiometry of nickel and EDTA ions in the metal complex formed between
metal and complexing agent is 1:3

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JAM 2026 Confidential Chemistry (CY)

Q.39 The correct statement(s) for graphite is/are

(A) It shows lubricating property

(B) Each carbon atom of graphite is sp-hybridized

(C) It conducts electricity

(D) The thermall co
cond
conductivity
nductivity
nd ty ooff gr
grap
graphite
aphi
ap hite
hite is
is higher
high
hi gher
gh er ttha
than
han
ha n th
that of diamond
diam
diamon
am

The Langmuir
muir
ir isotherm
iiso
soth
so ther
th erm
erm for
fo the ad
adsorption
on of a ga olid surface can be
gass on a ssol
solid
ol
Q.40
!"
expressed as = .T
The
he ccorre
correct
rect ssta
re statement(s)
tate
teme
ment
ment(s
nt (s)) about
(s abou
out
ou
utt th
this isotherm is/are
#$!"
[Given: iss th
the
t e frac
fractional
acti
ac tional
ti overage; % is the pr
al ccov
coverage;
ov pres
pressure
essu
sure of th
su the ga
gas;
s; K is a constant]

At very low pressures, plot
lo of in % iis a straight
against ight line
lin passing through the
(A)
origin with slope equal to K

(B) At very high pressures, plot of against % is a straight line parallel to the x-axis
with the value of the y-intercept equal to 1

(C) The Langmuir isotherm can also be expressed as # = 1 + #
& !"

(D) The Langmuir isotherm is applicable for multilayer adsorption

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JAM 2026 Confidential Chemistry (CY)

Section C: Q.41 – Q.50 Carry ONE mark each.

/ !
Q.41 For the equation ' = 3( ) + 4( * , 3( - + ( . , 2( + 1, the value of is
"#
______. (answer in integer)

Q.42 The number of stereogenic centre(s) present in the given alkaloid is_______.

integer)
(answer in intege
int gerr)
ge

Q.43 The type(s)) of chemically
cche
hemi
hemica
micall
ca llyy no
ll non-
non-equivalent
n-eq
n- equi
equiva
uivale
valent
le nt p
pro
protons
roto
ro tons
to ns p
pre
present
rese
re sent
se nt in the following
molecule is_______. (answer in integer)

The number of unpaired electron(s) of chromium in [(η6-C6H6)Cr(CO)3] is
Q.44
________. (answer in integer)

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JAM 2026 Confidential Chemistry (CY)

Consider the following radioactive decay process
Q.45

The value of m is_______. (answer in integer)

The Debye temperatures ($% ) of diamond and copper are 2230 K and 343 K,
Q.46 respectively. The maximum value of the frequency of the atomic oscillations of
diamond is Y times the maximum value of the frequency of the atomic oscillations
of copper. The value of Y is ____. (rounded off to two decimal places)

A system consists
onsisist
sists of 110 ((on
st (one
onee hu
on hund
hundred
ndred
nd d an
andd te
ten)
n) p
par
particles.
arti
ar ticles. Ea
ti Each
ch pparticle can have
Q.47 non
on-d
on -deg
-d egenerat
eg
only two non-degenerate atee en
at ener
ergy
er
energygy sstatetess &' aand
te
states nd &* (with &* > &' ). The energy
difference betwe
between
ween
we en these two
wo ssta
states
tate
ta tess is 0.10
te 0.1
0 .10
.10 eV.
eV. The
Th temperat
temperature
atur
at uree at which only 10
ur
ystem will be present in the energy state &* is
thhe system
particles of the ssys
ys is ____
__ K.
(rounded off tot twotwo decimal al places)

[Given: Thee va
valu
v lu
luee of B
value Bol
oltz
oltzmann’s
tz ’s constant
Boltzmann’s cconstan 38 × 10
antt = 1.38 10‒23 J K‒1

.6 × 1100‒19 J]
1 eV = 11.6 J]

When 3.00 g of a ssub
substance
ubst
ub stan
st ance
ance of
of molar
mola
mo larr mass
la mass 250 mol ‒1 is
250 g mol is dissolved
diss
dissol
ss in 100 g of
Q.48
CCl4, the boiling point of the solvent (CCl4) will be elevated by __________ K.
(rounded off to two decimal places)

[Given: Boiling point constant, Kb, for CCl4 = 5.00 K kg mol‒1]

The number of normal modes of vibration in benzene is _____________.
Q.49
(answer in integer)

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JAM 2026 Confidential Chemistry (CY)

At 30 ℃, the half-life for the decomposition of a compound is 100 seconds and
Q.50
the value of the half-life is independent of the initial concentration of the reactant.
The time required for 30% of the reactant to be consumed is _______ seconds.

(rounded off to one decimal place)

Section C: Q.51 – Q.60
60 Car
Carry
C arry
arry TWO
TWO marks
mar
m arks
ar ks each.
eeac
ach.
ach.

Q.51 The specific rrotation [+]*-
ic rotation
otat
otat , of (S)-2-pentanol
S degrees.
is +13.0 de
degr
grees.
gree
gr ee A one molar
solution of (S)-
(S)-2-pentanol
(S)-
)-2-
2-pent
2- mixed
ntanol is mi
m xed with an eq
equal
equa volume
ual volu
lum
lume of
of one
on molar solution
of racemic 2-pentanol.
2-pe
pent
pentan
ntanol
anol.. Th
ol observed
The obse
served rotation,
ed rot
otat
ation, α
α,, of tthe resulting
he rres
esul
es ulti
ulting
ting solution, when
measured inn a polarimeter
pola
po lari
la rime
ri ter tube
mete
mete tube of
of path
path length
llength 10 cm
gth cm is_____degrees.
is_____d
is _deg
_degre (rounded off
eg
to three decimal
decim
imal
im places)
al pla
lace
lacess)
ce

(Given: Molar
larr mass
Mola ma ofof 2-pentanol
ol is mol‒1)
is 88 g mol

Q.52 The number of iron atom(s) in Fe3O4 with an oxidation state of III along with a
coordination number of six is ________. (answer in integer)

The total number of P‒O‒P bridge(s) in the solid state structure of P4O8
Q.53
is________. (answer in integer)

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JAM 2026 Confidential Chemistry (CY)

At pH 7, the reaction for the oxidation of NADH at 298 K and a pressure of
Q.54
1 atm is given below:

1
NADH . H / . O* 3 NAD/ . H* O4
2

At 298 K, 5 6 (NAD/ 7NADH) = 4 809:204; and 5 6 (O* 7H* O) = 409<1?4;

The standard Gibbs free energy change (@B 6 ) for this reaction is _____ kJ.
(rounded off to two decimal places)

Farada y’s constant = 96500 C mol‒1]
[Given: Faraday’s
raday’
y’

ty ooff Na/ ions in water at 298 K is C
The mobility 91E × 10F
C91E FGG
m* sF' V F' 9 If the
Q.55
effective radius
dius of a Na/ ion
us of on is Y × 10‒12 m,
m the va
valu
value
luee of Y is __
lu _______.
(rounded off to
t ttwo
wo ddec
ecim
ec imal
im
decimalal p
pla
lace
la cess)
ce
places)

Elementary
[Given: Elem
emen
enta
entary
ta rgee = 19
charge
ry ccha
harg
ha rg ? × 10F'I 4J
19?
Viscosity
Viscos
cosi
sity
si ty ooff wa
water at 298 K is 1 mPaa ss]]
298

For the dissociation reaction,
Q.56
N* OK (g) L NO* (g) . NO (g)
when 1 mole of N* OK (g) is allowed to reach equilibrium at 27 ℃ and at a total
pressure of 1 bar, its degree of dissociation is found to be 0.20. The value of
equilibrium constant, KP, is _________. (rounded off to three decimal places)

CY Page 35 of 41

JAM 2026 Confidential Chemistry (CY)

A free particle of mass M confined within the walls of a one-dimensional box of
Q.57
length Q (with the potential outside the box being infinity), is in the eigenstate
having quantum number R = S. The magnitude of uncertainty in the measurement
T
of momentum of the particle is Y4 × 4 . The value of Y is_________. (answer
(answer in
U
integer)

[Given: The potential ; inside the box is equal to zero and W is the Planck’s
constant]

The rotational
onal
al spectrum
sspe
pectrum of HF
pe F has
ha equally
equall
eq lly spaced
ll sp ed lines
l ar 40.9 cm‒1 apart.
thatt are
Q.58
The moment
nt ooff inertia of HF is Y × 10FXZ kg m* 9 The val
HF value
alue
al
lue o Y is ______.
ue of
(rounded off to
t tthr
hree decim
hr
three imal places)
im
decimal
eedd oof llig
[Given: Speed light,
ig 1 G 4m4s F'
:4 × 4 10
ight, \ = :4
Planck’s
Planc
nck’
k’ss co
k’ constant,
cons
nsta
ns nt, W = ?
tant
ta nt 9?: × 10FKX ^ s ]
?9?:

At a constant pressure,
ant pr
pres
essu
essure
sure,, the entrop
re entropy
opy
op mixing
y of m
mix
ixin
ix mole
ing of 1 m
in mol
olee of oxygen
ol oxy
oxyge with 3 moles
xy
Q.59
of nitrogen at 2255 ℃ is ______ ^ _ F' . ((ro
(rounded
roun
ro unde
unded
de d off
off to ttwo
wo decimal
dec
decim
ec imal places)
im
[Given: Universal
iv l gas constant, <9:1S4^ olF' 4_ F'
tant ` = <9:1S4^4mol
Assume that the gases behave ideally]

CY Page 36 of 41

JAM 2026 Confidential Chemistry (CY)

If the radial wavefunction of the 3p orbital of a hydrogen-like atom is
Q.60
' f Kn*
b K' (r) = 4 e j (S 8 p)q Ftn*
XGd h
c i

h
then, the radial node of the orbital is located at Y × i , where Y is equal to ____.
f
(answer in integer)

[Given: u is the atomic number of the hydrogen-like atom
av is the Bohr radius

*f
p= e j r, n is the principal quantum number]
whi

CY Page 37 of 41