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Class 12
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Chemistry
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The p-Block Elements
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Dioxygen
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Preparation of Dioxygen
Preparation of Dioxygen
17 Mins
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Preparation of Oxygen
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Preparation of Oxygen
2 mins
Important Questions
The most abundant element in earth's crust is:
Medium
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>
Explain why
O
2
molecule is paramagnetic in nature ?
Medium
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>
Why is
K
O
2
paramagnetic ?
Medium
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>
The following reaction is used for the preparation of oxygen gas in the laboratory.
2
K
C
l
O
3
(
s
)
H
e
a
t
C
a
t
a
l
y
s
t
2
K
C
l
(
s
)
+
3
O
2
(
g
)
Which of the following statement is correct about the reaction?
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A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are respectively:
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Answer the following questions:
1. Explain interhalogen compounds.
2. How is oxygen prepared from the following compound?
K
C
l
O
4
Hard
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>
Which of the following does not react with oxygen directly?
Z
n
,
T
i
,
P
t
,
F
e
Medium
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>
How is oxygen prepared from the following compound?
P
b
O
2
Medium
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>
Explain the formation of
(i) water gas
(ii) producer gas. Give their uses.
Hard
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>
Which of the following liberates
O
2
upon hydrolysis?
Hard
JEE Advanced
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>