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Standard XII
Mathematics
Number of Elements in a Cartesian Product
Which of the ...
Question
Which of the following options has the correct combination considering List-I and List-II?
A
I
I
→
P
;
I
V
→
U
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B
I
I
→
S
;
I
V
→
R
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C
I
I
→
U
;
I
V
→
T
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D
I
I
→
P
;
I
V
→
R
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Solution
The correct option is
A
I
I
→
P
;
I
V
→
U
Suggest Corrections
0
Similar questions
Q.
List-I
List-II
(I)
Teflon
(P)
Electrically
insulated buttons
(II)
Vinyl Rubber
(Q)
Pipe Insulation
(III)
Lexan
(R)
Rubber Erasers
(IV)
PVC
(S)
Bullet proof
glass
(T)
Foam thermocole
(U)
Non-stick kitchenware
Which of the following options has the correct combination considering List - I and List - II?
Q.
List - I
List - II
(I) Dissociation of
N
2
O
4
(
g
)
:
(P) Increases with
N
2
O
4
(
g
)
⇌
2
N
O
2
(
g
)
;
temperature
Δ
H
=
+
57.0
k
J
(II) Oxidation of
N
H
3
(
g
)
:
(Q) Decreases with
4
N
H
3
(
g
)
+
5
O
2
⇌
4
N
O
(
g
)
+
6
H
2
O
(
g
)
;
pressure
Δ
H
=
−
900.0
k
J
(III) Oxidation of nitrogen:
(R) Increases with
N
2
(
g
)
+
O
2
(
g
)
⇌
2
N
O
(
g
)
;
addition of inert
Δ
H
=
+
180.0
k
J
gas at constant
pressure
(IV) Formation of
N
O
2
(
g
)
:
(S) Decreases with
N
O
(
g
)
+
O
3
(
g
)
⇌
N
O
2
(
g
)
+
O
2
(
g
)
;
temperature
Δ
H
=
−
200.0
k
J
(T)
K
p
=
K
c
(U)
K
p
=
K
c
(
R
T
)
1
Which of the following options has the correct combination considering List-I and List-II?
Q.
List - I
List - II
(Compound)
(Hybridisation)
(I)
[
F
e
(
E
D
T
A
)
]
−
(P)
s
p
3
d
2
(II)
[
N
i
(
C
N
)
4
]
2
−
(Q)
s
p
3
(III)
[
C
u
C
l
4
]
2
−
(R)
d
3
s
(IV)
[
F
e
(
H
2
O
)
6
]
2
−
(S)
d
2
s
p
3
(T)
d
s
p
2
(U)
s
p
3
d
Which of the following option has correct combination considering List-I and List-II?
Q.
Nitric acid
(
H
N
O
3
)
,
also known as aqua fortis (Latin for "strong water") or spirit of niter, is a highly corrosive mineral acid. Nitric acid reacts with most metals, but the details depend on the concentration of the acid and the nature of the metal.
List-I contains chemical reactions of metals with
H
N
O
3
and List-II contains the compound(s) formed.
L
i
s
t
−
I
L
i
s
t
−
I
I
(
I
)
Ca with dilute and cold
H
N
O
3
(
P
)
Metal nitrate
(
I
I
)
As with concentrated
H
N
O
3
(
Q
)
N
O
(
I
I
I
)
Zn with dilute
H
N
O
3
(
R
)
N
O
2
(
I
V
)
Cu with dilute
H
N
O
3
(
S
)
N
2
O
(
T
)
Tribasic acid
(
U
)
Hydrogen gas
Which of the following options has the correct combination considering List-I and List-II?
Q.
50 gm of a compound (molar mass 200 gm/mol and density 0.6 gm/ml) is mixed in 200 gm of a solvent (density 1.2 kg/L)
List-I contains concentration terms for the solutions formed and List-II contains the concentration.
List-I
List-II
(
I
)
Molarity (mol/L)
(
P
)
20
(
I
I
)
Molality (mol/kg)
(
Q
)
0.67
(
I
I
I
)
%
mass by mass
(
R
)
1.2
(
I
V
)
%
mass by volume (g/ml)
(
S
)
1
(
T
)
25
(
U
)
1.25
Which of the following options has the correct combination considering List-I and List-II
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