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Question
Chemistry
Which of the following statements is incorrect?
Q. Which of the following statements is incorrect?
91
148
NTA Abhyas
NTA Abhyas 2022
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A
Calamine and siderite are carbonates
B
Argentite and cuprite are oxides
C
Zinc blende and pyrites are sulphides.
D
Malachite and azurite are ores of copper
Solution:
(
A
)
Calamine
=
Z
n
C
O
3
, Siderite
=
F
e
C
O
3
(
B
)
Argentite
=
A
g
2
S
and Cuprite
=
C
u
2
O
(
C
)
Zinc blende
=
Z
n
S
, Pyrites
=
F
e
S
2
(
D
)
Malachite
=
C
u
C
O
3
C
u
(
O
H
)
2
, Azurite
=
2
C
u
C
O
3
C
u
(
O
H
)
2