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questions
List of practice Questions
Air pollution is not caused by
Chemistry
Environmental Chemistry
A
l
C
l
3
AlCl_3
A
lC
l
3
is a
Chemistry
p -Block Elements
A
l
C
l
3
AlCl_3
A
lC
l
3
is covalent while
A
l
F
3
AlF_3
A
l
F
3
is ionic. This fact can be justified on the basis of
Chemistry
Chemical bonding and molecular structure
A
l
C
l
3
{AlCl3}
A
lCl
3
on hydrolysis gives
Chemistry
p -Block Elements
Air bladder is present in
Biology
Kingdom Animalia
Air has refractive index 1.0003. The thickness of air column which will have one more wavelength of yellow light (600 nm) than in the same thickness of vacuum is:
Physics
Ray optics and optical instruments
Air inside a closed container is saturated with water vapour. The air pressure is p and the saturated vapour pressure of water is
p
‾
\overline{p}
p
. If the mixture is compressed to one-half of its volume by maintaining temperature constant, the pressure becomes
Physics
kinetic theory
Air layering is performed in case of
Biology
Reproduction in Organisms
Agrochemical based agriculture includes
Biology
Applications of Biotechnology
A
I
D
S
AIDS
A
I
D
S
is widely diagnosed by
Biology
human health and disease
AgCl precipitate dissolves in
N
H
4
O
H
NH_4OH
N
H
4
O
H
due to the formation of
Chemistry
d -and f -Block Elements
A
g
N
O
3
{AgNO_3}
A
g
N
O
3
does not give precipitate with
C
H
C
l
3
{CHCl_3}
C
H
C
l
3
because
Chemistry
Haloalkanes and Haloarenes
After simplification, what is the number of terms in the expansion of
[
(
3
x
+
y
)
5
]
4
−
[
(
3
x
−
y
)
4
]
5
[(3x + y)^5]^4 - [(3x-y)^4]^5
[(
3
x
+
y
)
5
]
4
−
[(
3
x
−
y
)
4
]
5
?
Mathematics
Binomial theorem
A
g
+
+
N
H
3
<
=
>
[
A
g
(
N
H
3
)
]
+
;
{Ag+ + NH3 <=> [Ag(NH3)]+;}
A
g
+
+
N
H
3
<=>
[
A
g
(
N
H
3
)]
+
;
k
1
=
6.8
×
1
0
−
3
k_1 = 6.8 \times 10^{-3}
k
1
=
6.8
×
1
0
−
3
[
A
g
(
N
H
3
)
]
+
+
N
H
3
<
=
>
[
A
g
(
N
H
3
)
2
]
+
;
{[Ag(NH3)]+ + NH3 <=> [Ag(NH3)2]+ ;}
[
A
g
(
N
H
3
)]
+
+
N
H
3
<=>
[
A
g
(
N
H
3
)
2
]
+
;
k
2
=
1.6
×
1
0
−
3
k_2 = 1.6 \times 10^{-3}
k
2
=
1.6
×
1
0
−
3
then the formation constant of the complex
[
A
g
(
N
H
3
)
2
]
+
[Ag(NH_3)_2]^+
[
A
g
(
N
H
3
)
2
]
+
is
Chemistry
coordination compounds
Silver is removed electrolytically from
200
m
L
200 \,mL
200
m
L
of a
0.1
N
0.1\, N
0.1
N
solution of
A
g
N
O
3
AgNO _{3}
A
g
N
O
3
by a current of
0.1
A
0.1\, A
0.1
A
. How long will it take to remove half of the silver from the solution?
Chemistry
Electrochemistry
Adsorption is an exothermic process. The amount of substance adsorbed
Chemistry
Surface Chemistry
Adsorption is multilayer in the case of
Chemistry
Surface Chemistry
Adsorption of water by hydrophilic colloids is
Biology
Transport in Plants
Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?
Chemistry
p -Block Elements
Adsorbed acetic acid on activated charcoal is
Chemistry
Surface Chemistry
Adhesive pads plantulae are present in Cockroach over
Biology
Structural Organisation of Animals and plants
ADA is an enzyme which is deficient in the genetic disorder SCID. What is the full form of ADA ?
Biology
Applications of Biotechnology
Adding
C
l
2
Cl_2
C
l
2
to benzene in the presence of anhydrous
A
l
C
l
3
AlCl_3
A
lC
l
3
is an example of
Chemistry
Hydrocarbons
Addition of a solute to pure water causes
Biology
Transport in Plants
Addition of HBr to 2-methyl-prop-1-ene in the presence of hydrogen peroxide mainly forms
Chemistry
Hydrocarbons
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