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Byju's Answer
Standard XII
Chemistry
Crystalline and Amorphous Solid
BaSO4 is leas...
Question
BaSO4 is least soluble in 1. BaCl2 2. H2O 3. Al2(SO4)3 4. AgNO3
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Q.
Balance the following equations:
M
n
O
2
+
H
C
l
→
M
n
C
l
2
+
C
l
2
+
H
2
O
N
H
4
C
l
+
C
a
(
O
H
)
2
→
N
H
3
+
C
a
C
l
2
+
H
2
O
B
a
C
l
2
+
A
l
2
(
S
O
4
)
3
→
B
a
S
O
4
+
A
l
C
l
3
N
a
A
l
O
2
+
H
2
O
+
C
O
2
→
A
l
H
3
+
N
a
2
C
O
3
N
H
3
+
O
2
→
N
O
+
H
2
O
Z
n
+
H
N
O
3
→
Z
n
(
N
O
3
)
2
+
N
O
2
+
H
2
O
H
2
S
+
O
2
→
H
2
O
+
S
O
2
P
b
O
+
C
→
P
b
+
C
O
2
B
a
C
l
2
+
H
2
S
O
4
→
B
a
S
O
4
+
H
C
l
C
H
4
+
O
2
→
C
O
2
+
H
2
O
Q.
Balance the following chemical equations:
(a)
H
N
O
3
+
C
a
(
O
H
)
2
→
C
a
(
N
O
3
)
2
+
H
2
O
(b)
N
a
O
H
+
H
2
S
O
4
→
N
a
2
S
O
4
+
H
2
O
(c)
N
a
C
l
+
A
g
N
O
3
→
A
g
C
l
+
N
a
N
O
3
(d)
B
a
C
l
2
+
H
2
S
O
4
→
B
a
S
O
4
+
H
C
l
Q.
Balance the following chemical reactions:
(a)
H
N
O
3
+
C
a
(
O
H
)
2
→
C
a
(
N
O
3
)
2
+
H
2
O
(b)
N
a
C
l
+
A
g
N
O
3
→
A
g
C
l
+
N
a
N
O
3
(c)
B
a
C
l
2
+
H
2
S
O
4
→
B
a
S
O
4
+
H
C
l
Q.
Which of the following reactions is/are a double displacement reaction(s) ?
(i)
A
g
N
O
3
+
N
a
B
r
→
N
a
N
O
3
+
A
g
B
r
(ii)
B
a
C
l
2
+
H
2
S
O
4
→
B
a
S
O
4
+
2
H
C
l
(iii)
A
g
N
O
3
+
N
a
C
l
→
A
g
C
l
+
N
a
N
O
3
(iv)
N
a
O
H
+
H
C
l
→
N
a
C
l
+
H
2
O
Q.
S
O
2
−
3
and
S
O
2
−
4
both give white precipitate with
B
a
C
l
2
solution. Scheme to detect
S
O
2
−
3
in presence of
S
O
2
−
4
is given below. If true enter 1, if false enter 0.
B
a
S
O
4
is insoluble in conc. HCl while
B
a
S
O
4
remains soluble. Separate
B
a
S
O
4
and add
B
r
2
water into filtrate.
S
O
2
−
3
is oxidised to
S
O
2
−
4
and gives white precipitate of
B
a
S
O
4
.
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