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NEET • CHEMISTRY • REDOX REACTIONS
Redox reactions practice · Mixed difficulty
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181
Medium
181 of 184
Remembering
+4 | -1
Oxidation state of carbon in graphite is:
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Correct option: A
Zero
Option A (Zero) is correct because graphite is an allotrope of carbon in its elemental form, and elements in their standard state have an oxidation state of zero.
182
Medium
182 of 184
Remembering
+4 | -1
in acid medium is always reduced to :
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Correct option: B
Option B () is correct because in acidic medium, KMnO4 is a strong oxidizing agent and is reduced to Mn2+.
183
Easy
183 of 184
Analyzing
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Which is not a redox reaction?
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Correct option: B
Option B () is correct because there is no change in the oxidation state of any element in this reaction.
184
Easy
184 of 184
Remembering
+4 | -1
Oxidation number of Sulphur in is
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Correct option: A
zero
Option A (zero) is correct because in elemental form, the oxidation number of any element is zero.
Revision notes and key takeaways
Review REDOX REACTIONS in your textbook or class notes, then use this set to check your understanding.
Showing 181-184 of 184 questions