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IIT JAM CY
List of top Questions asked in IIT JAM CY
The number of significant figures in
5.0820
x
1
0
2
5.0820 x 10^2
5.0820
x
1
0
2
is _________.
IIT JAM CY - 2022
IIT JAM CY
Inorganic Chemistry
Analytical Chemistry
The pH of an aqueous buffer prepared using CH3COOH and CH3COO Na
+
is 4.80.
The quantity
[
C
H
3
C
O
O
−
]
−
[
C
H
3
C
O
O
H
]
[
C
H
3
C
O
O
H
]
\frac{[CH_3COO^-]-[CH_3COOH]}{[CH_3COOH]}
[
C
H
3
COO
H
]
[
C
H
3
CO
O
−
]
−
[
C
H
3
COO
H
]
is _____. (round off to three decimal places)
[Given: pK
a
of CH
3
COOH in water is 4.75]
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Chemical equilibria
The d spacing for the first-order X-ray (
λ
\lambda
λ
= 1.54 Å) diffraction event of metallic iron (fcc) at
2
θ
=
20.2
°
2\theta= 20.2°
2
θ
=
20.2°
is _______.Å. (round off to three decimal places)
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Solid State
Among the following, the correct statement(s) is/are:
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Organic Chemistry- Some Basic Principles and Techniques
The phase diagram of water is best represented by
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Phase equilibria
The conversion of
I
C
l
ICl
I
Cl
to
I
C
l
+
ICl^+
I
C
l
+
involve(s)
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Thermodynamics
The potential for a particle in a one-dimensional box is given as:
V
(
x
)
=
0
V(x)=0
V
(
x
)
=
0
for
0
≤
x
≤
L
,
0≤x≤L,
0
≤
x
≤
L
,
and
V
(
x
)
=
∞
V(x) = ∞
V
(
x
)
=
∞
elsewhere.
The locations of the internal nodes of the eigenfunctions
Ψ
n
(
x
)
,
n
≥
2
\Psi _n(x), n≥2
Ψ
n
(
x
)
,
n
≥
2
, are
[Given: m is an integer such that 0<m<n]
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Atomic Structure
The reaction involve(s)
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Thermodynamics
The reaction of 122 g of benzaldehyde with 108 g of phenylhydrazine gave 157 g of the product
The yield of the product is _________%. (round off to the nearest integer)
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
The reactivity of the enol derivatives
towards benzaldehyde follows the order
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
Among the following, the reaction(s) that favor(s) the formation of the products at 25 °C is/are
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Thermodynamics
The correct statement about the geometries of
B
H
2
+
BH_2^+
B
H
2
+
and
N
H
2
+
NH_2^+
N
H
2
+
, based on valence shell electron pair repulsion (VSEPR) theory is
IIT JAM CY - 2022
IIT JAM CY
Inorganic Chemistry
Chemical bonding and molecular structure
The reason(s) for the lower stability of
S
i
2
H
6
Si_2H_6
S
i
2
H
6
compared to
C
2
H
6
C_2H_6
C
2
H
6
is/are
IIT JAM CY - 2022
IIT JAM CY
Inorganic Chemistry
Chemical bonding and molecular structure
The stability of adducts
H
3
B
.
P
F
3
,
H
3
B
.
N
M
c
3
,
H
3
B
.
C
O
,
H
3
B
.
O
M
e
2
H_3B.PF_3, H_3B.NMc_3, H_3B.CO, H_3B.OMe_2
H
3
B
.
P
F
3
,
H
3
B
.
NM
c
3
,
H
3
B
.
CO
,
H
3
B
.
OM
e
2
follows the order
IIT JAM CY - 2022
IIT JAM CY
Inorganic Chemistry
Chemical bonding and molecular structure
Among the following, the suitable route(s) for the conversion of benzaldehyde to acetophenone is/are
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
The spacing between successive rotational energy levels of a diatomic molecule XY and its heavier isotopic analogue X'Y' varies with the rotational quantum number, J, as
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Spectroscopy
For an N-atom nonlinear polyatomic gas, the constant volume molar heat capacity Cv,m has the expected value of 3(N-1)R, based on the principle of equipartition of energy. The correct statement(s) about the measured value of Cv,m is/are
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Thermodynamics
All possible lattice types are observed in the
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Solid State
The ground state and the maximum number of spin-allowed electronic transitions possible in a
C
o
2
+
Co^{2+}
C
o
2
+
tetrahedral complex, respectively, are
IIT JAM CY - 2022
IIT JAM CY
Inorganic Chemistry
d block elements
The standard Gibbs free energy change for the reaction
H
2
O
(
g
)
→
H
2
(
g
)
+
½
O
2
(
g
)
H_2O (g) → H_2 (g) + ½ O_2(g)
H
2
O
(
g
)
→
H
2
(
g
)
+
½
O
2
(
g
)
at 2500 K is
+
118
k
J
m
o
l
−
1
+118 kJ mol^{-1}
+
118
k
J
m
o
l
−
1
The equilibrium constant for the reaction is
[Given:
R
=
8.314
J
K
−
1
m
o
l
−
1
R= 8.314 J K^{-1} mol^{-1}
R
=
8.314
J
K
−
1
m
o
l
−
1
]
IIT JAM CY - 2022
IIT JAM CY
Physical Chemistry
Thermodynamics
Among of the following
the number of aromatic compounds is _______ .
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Heterocyclic Chemistry
An organic compound having molecular formula
C
9
H
10
O
2
C_9H_{10}O_2
C
9
H
10
O
2
exhibits the following spectral characteristics:
′
H
N
M
R
:
δ
9.72
(
t
,
1
H
)
,
7.1
(
d
,
2
H
)
,
6.7
(
d
,
2
H
)
,
3.8
(
s
,
3
H
)
,
3.6
(
d
,
2
H
)
'H NMR: \delta 9.72 (t, 1H), 7.1 (d, 2H), 6.7 (d, 2H), 3.8 (s, 3H), 3.6 (d, 2H)
′
H
NMR
:
δ
9.72
(
t
,
1
H
)
,
7.1
(
d
,
2
H
)
,
6.7
(
d
,
2
H
)
,
3.8
(
s
,
3
H
)
,
3.6
(
d
,
2
H
)
I
R
:
1720
c
m
−
1
IR: ~1720 cm^{-1}
I
R
:
1720
c
m
−
1
The most probable structure of the compound is
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Qualitative Organic Analysis
The major product formed in the following reaction is
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
The major product formed in the following reaction is
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
The major product formed in the reaction of (28,3R)-2-chloro-3-phenylbutane with NaOEt in EtOH is
IIT JAM CY - 2022
IIT JAM CY
Organic Chemistry
Reaction Mechanisms & Synthesis
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