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Byju's Answer
Standard XII
Chemistry
Synthesis by Reduction of Nitriles
Which of the ...
Question
Which of the following combination will give black
ppt.?
A
P
b
(
C
H
3
C
O
O
)
2
+
H
2
S
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B
C
d
(
C
H
3
C
O
O
)
2
+
H
2
S
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C
A
g
2
S
2
O
3
+
H
e
a
t
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D
A
g
N
O
3
+
N
a
2
S
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Solution
The correct options are
A
P
b
(
C
H
3
C
O
O
)
2
+
H
2
S
B
A
g
2
S
2
O
3
+
H
e
a
t
D
A
g
N
O
3
+
N
a
2
S
Option (A),(C),(D) are correct.
(B) :
C
d
(
C
H
3
C
O
O
)
2
+
H
2
S
will give yellow ppt.
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0
Similar questions
Q.
H
g
2
+
2
when reacts with
H
2
S
, black ppt. (A) formed which when reacts with
N
a
2
S
followed by filtration leaving behind black ppt. (B). The filtrate with
H
+
gives black ppt. (C). A, B and C are
:
Q.
P
b
(
C
H
3
C
O
O
)
2
gives _____ color with
H
2
S
:
Q.
Which of the following gives black precipitate with
H
2
S
?
Q.
Colourless salt (A) give white ppt (B) with NaOH; ppt (B) dissolves in excess of NaOH to form (C). On passing
H
2
S
gas into (C) white ppt (D) appears. (A) also gives white ppt (E) with
A
g
N
O
3
solution. What is (A)?
Q.
(A) (colourless solution) gives white ppt (B) with NaOH solution but ppt dissolves in excess of NaOH forming (C). (C) does not give ppt with
H
2
S
but on boiling with
N
H
4
C
l
, white ppt (B) appears. (A) also gives yellow ppt with
A
g
N
O
3
.
State True or False.
(A) is
A
l
B
r
3
:
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