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Recent questions in 2001
Questions
>>
JEEMAIN and NEET
>>
NEET PAST PAPERS
>>
2001
If a
b
a
X
species emits firstly a positron, then two
α
and two
β
and at last one
α
is also after intially it fainally convets into stable
c
d
Y
species so correct relation will be : -
neet
chemistry
past papers
2001
100
asked
Jul 20, 2018
by
pady_1
1
answer
Solubility of a
M
2
S
salt is
3.5
×
10
–
6
then find out solubility product : -
neet
chemistry
past papers
2001
99
asked
Jul 20, 2018
by
pady_1
1
answer
Ionisation constant of
C
H
3
C
O
O
H
is
1.7
×
10
–
5
and concentration of
H
+
ions is
3.4
×
10
–
4
. Then find out initial concentration of
C
H
3
C
O
O
H
molecules :-
neet
chemistry
past papers
2001
98
asked
Jul 20, 2018
by
pady_1
1
answer
Nitrogen form
N
2
, but phosphorous form
P
2
, it's at a time convert in
P
4
, reason is :
neet
chemistry
past papers
2001
97
asked
Jul 20, 2018
by
pady_1
1
answer
Zn convert it's melted state to its solid state, it has HCP structure, then find out nearest no. of nearest atom : -
neet
chemistry
past papers
2001
96
asked
Jul 20, 2018
by
pady_1
1
answer
The most convenient method to protect the bottom of ship made of iron is : -
neet
chemistry
past papers
2001
95
asked
Jul 20, 2018
by
pady_1
1
answer
The Beans are cooked earlier in pressure cooker, because : -
neet
chemistry
past papers
2001
94
asked
Jul 20, 2018
by
pady_1
1
answer
In
H
S
–
,
I
–
,
R
–
N
H
2
,
N
H
3
order of proton excepting tendency will be :-
neet
chemistry
past papers
2001
93
asked
Jul 20, 2018
by
pady_1
1
answer
The following quantum numbers are possible for how many orbital n = 3, l = 2, m = +2
neet
chemistry
past papers
2001
92
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following will exhibit maximum ionic conductivity : -
neet
chemistry
past papers
2001
91
asked
Jul 20, 2018
by
pady_1
1
answer
Main axis of a diatomic molecule is z, molecular orbtial
p
x
and
p
y
overlaps to form, which of the following orbital : -
neet
chemistry
past papers
2001
90
asked
Jul 20, 2018
by
pady_1
2
answers
In X- H ----- Y, X and Y both are electronegative elements :
neet
chemistry
past papers
2001
89
asked
Jul 20, 2018
by
pady_1
1
answer
Which statement is incorrect : -
neet
chemistry
past papers
2001
88
asked
Jul 20, 2018
by
pady_1
1
answer
Which of following organometallic compound is
σ
and
π
bonded : -
neet
chemistry
past papers
2001
87
asked
Jul 20, 2018
by
pady_1
1
answer
Coordination number of
N
i
in
[
N
i
(
C
2
O
4
)
3
]
4
−
is
neet
chemistry
past papers
2001
86
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following will give maximum number of isomers : -
neet
chemistry
past papers
2001
85
asked
Jul 20, 2018
by
pady_1
1
answer
Correct order of
I
s
t
IP among following elements Be, B, C, N, O is : -
neet
chemistry
past papers
2001
84
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following statement is not correct
neet
chemistry
past papers
2001
83
asked
Jul 20, 2018
by
pady_1
1
answer
In which of the following bond angle is maximum :
neet
chemistry
past papers
2001
82
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following two species in the pair are isostructural :-
neet
chemistry
past papers
2001
81
asked
Jul 20, 2018
by
pady_1
2
answers
P
b
O
2
→
P
b
O
Δ
G
298
<
0
<br>
S
n
O
2
→
S
n
O
Δ
G
298
>
0
Most probable oxidation state of Pb & Sn will be :
neet
chemistry
past papers
2001
80
asked
Jul 20, 2018
by
pady_1
1
answer
Which is not correct regarding the adsorption of a gas on surface of solid: -
neet
chemistry
past papers
2001
79
asked
Jul 20, 2018
by
pady_1
1
answer
Standard electrode potential are <br>
F
e
+
2
/
F
e
E
o
=
−
0.44
<br>
F
e
+
3
/
F
e
+
2
E
o
=
0.77
<br> If
F
e
+
2
,
F
e
+
3
and
F
e
block are kept together, than :-
neet
chemistry
past papers
2001
78
asked
Jul 20, 2018
by
pady_1
1
answer
Pure water can be obtain from sea water by
neet
chemistry
past papers
2001
77
asked
Jul 20, 2018
by
pady_1
1
answer
Specific volume of cylindrical virus particle is
6.02
×
10
–
2
c
c
/
g
m
. Whose radius and length are 7 Å & 10Å respectively. If
N
A
=
6.02
×
10
23
. Find mol. wt. of virus : -
neet
chemistry
past papers
2001
76
asked
Jul 20, 2018
by
pady_1
1
answer
Percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt = 78.4) then minimum molecular weight of peroxidase anhydrous enzymes is : -
neet
chemistry
past papers
2001
75
asked
Jul 20, 2018
by
pady_1
1
answer
Molarity of liquid HCl if density of liq. HCl is 1.17 gm/cc : -
neet
chemistry
past papers
2001
74
asked
Jul 20, 2018
by
pady_1
1
answer
When a bio chemical reaction is carried out in laboratory out side the human body in the absence of enzyme, then the rate of reaction obtained is
10
–
6
times, than activation energy of reaction in the presence of enzyme is : -
neet
chemistry
past papers
2001
73
asked
Jul 20, 2018
by
pady_1
1
answer
A human body required the 0.01 Curie activity of radioactive substance after 24 hours. Half life of radioactive is 6 hours. Then max. activity of radioactive substance that can be injected will be : -
neet
chemistry
past papers
2001
72
asked
Jul 20, 2018
by
pady_1
1
answer
For the reaction
2
N
2
O
5
→
4
N
O
2
+
O
2
rate and rate constant are
1.02
×
10
–
4
and
3.4
×
10
–
5
s
e
c
–
1
respectively.Then concentration of
N
2
O
5
at that time will be : -
neet
chemistry
past papers
2001
71
asked
Jul 20, 2018
by
pady_1
1
answer
Enthalpy of
C
H
4
+
1
2
O
2
→
C
H
3
O
H
is negative. If enthalpy of combustion of
C
H
4
and
C
H
3
O
H
and x and y respectively. Then which relation is correct : -
neet
chemistry
past papers
2001
70
asked
Jul 20, 2018
by
pady_1
1
answer
When 1 mol gas is heated at constant volume temperature is raised from 298 to 308 K. Heat supplied to the gas is 500 J. Then which statement is correct : -
neet
chemistry
past papers
2001
69
asked
Jul 20, 2018
by
pady_1
1
answer
Change in enthalpy for reaction <br>
2
H
2
O
2
(
ℓ
)
→
2
H
2
O
(
ℓ
)
+
O
2
(
g
)
<br> If heat of formation of
H
2
O
2
(
ℓ
)
and
H
2
O
(
ℓ
)
are -188 & -286 KJ/mol respectively :-
neet
chemistry
past papers
2001
68
asked
Jul 20, 2018
by
pady_1
1
answer
A compound of molecular formula is
C
7
H
16
shows optical isomerism, compound will be
neet
chemistry
past papers
2001
67
asked
Jul 20, 2018
by
pady_1
1
answer
In steam distillation of toluene, the pressure of toluene in vapour is :-
neet
chemistry
past papers
2001
66
asked
Jul 20, 2018
by
pady_1
1
answer
<img src= ""/> <br> which statement is incorrect about peptide bond :-
neet
chemistry
past papers
2001
65
asked
Jul 20, 2018
by
pady_1
1
answer
Which is correct statement :-
neet
chemistry
past papers
2001
64
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following is correct about H- bonding in nucleotide :-
neet
chemistry
past papers
2001
63
asked
Jul 20, 2018
by
pady_1
1
answer
Which of following is correct :-
neet
chemistry
past papers
2001
62
asked
Jul 20, 2018
by
pady_1
1
answer
In preparation of alkene from alcohol using
A
l
2
O
3
which is effective factor :-
neet
chemistry
past papers
2001
61
asked
Jul 20, 2018
by
pady_1
1
answer
The incorrect IUPAC name is : -
neet
chemistry
past papers
2001
60
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following is correct : -
neet
chemistry
past papers
2001
59
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following is not correctly matched
neet
chemistry
past papers
2001
58
asked
Jul 20, 2018
by
pady_1
1
answer
Which of following give positive Fehling solution test
neet
chemistry
past papers
2001
57
asked
Jul 20, 2018
by
pady_1
1
answer
Which of the following is incorrect :-
neet
chemistry
past papers
2001
56
asked
Jul 20, 2018
by
pady_1
1
answer
An organic compound
A
(
C
4
H
9
C
l
)
on reaction with
N
a
/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is :-
neet
chemistry
past papers
2001
55
asked
Jul 20, 2018
by
pady_1
1
answer
<img src = ""/>
neet
chemistry
past papers
2001
54
asked
Jul 20, 2018
by
pady_1
1
answer
Which alkene on ozonolysis gives <br>
neet
chemistry
past papers
2001
53
asked
Jul 20, 2018
by
pady_1
1
answer
neet
chemistry
past papers
2001
52
asked
Jul 20, 2018
by
pady_1
1
answer
The correct acidic order of following is : - <br>
neet
chemistry
past papers
2001
51
asked
Jul 20, 2018
by
pady_1
1
answer
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