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Byju's Answer
Standard VII
Chemistry
Cleansing Action
Pearl ash is:
Question
Pearl ash is:
A
N
a
C
l
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B
K
2
C
O
3
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C
N
a
H
C
O
3
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D
K
H
C
O
3
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Solution
The correct option is
B
K
2
C
O
3
Pearl ash is potassium carbonate. its formula is
K
2
C
O
3
. It is also known as potash.
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0
Similar questions
Q.
N
a
2
C
O
3
can be manufactured by Solvay process but
K
2
C
O
3
cannot be prepared because:
Q.
Which is not correctly matched?
(1) Basic strength of oxides:
C
s
2
O
<
R
b
2
O
<
K
2
O
<
N
a
2
O
<
L
i
2
O
(2) Stability of carbonates:
N
a
2
C
O
3
<
K
2
C
O
3
<
R
b
2
C
O
3
<
C
s
2
C
O
3
(3) Stability of bicarbonates:
L
i
H
C
O
3
<
N
a
H
C
O
3
<
K
H
C
O
3
<
R
b
H
C
O
3
<
C
s
H
C
O
3
(4) Melting point:
N
a
F
<
N
a
C
l
<
N
a
B
r
<
N
a
I
Q.
A mixture of soda ash and pearl ash is known as:
Q.
K
2
C
O
3
cannot be prepared by Solvay's process because:
Q.
K
2
C
O
3
cannot be prepared by solvay ammonia process because
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