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1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
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-1
Out of Syllabus
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In which of the following reactions, hydrogen peroxide acts as an oxidizing agent ?
A
HOCl + H2O2 $$ \to $$ H3O+ + Cl$$-$$ + O2
B
I2 + H2O2 + 2OH$$-$$ $$ \to $$ 2I$$-$$ + 2H2O + O2
C
2Mn$$O_4^ - $$ + 3H2O2 $$ \to $$ 2 MnO2 + 3O2 + 2H2O + 2OH$$-$$
D
PbS + 4H2O2 $$ \to $$ PbSO4 + 4H2O
2
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Identify the reaction which does not liberate hydrogen :
A
Reaction of zinc with aqueous alkali.
B
Electrolysis of acidified water using Pt electrodes.
C
Allowing a solution of sodium in liquid ammonia to stand.
D
Reaction of lithium hydride with B2H6.
3
JEE Main 2016 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Identify the incorrect statement regarding heavy water :
A
It reacts with Al4C3 to produce CD4 and Al(OD)3 .
B
It is used as a coolant in nuclear reactors.
C
It reacts with CaC2 to produce C2D2 and Ca(OD)2 .
D
It reacts with SO3 to form deuterated sulphuric acid (D2SO4).
4
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Which one of the following statements about water is FALSE?
A
Water is oxidized to oxygen during photosynthesis
B
Water can act both as an acid and as a base.
C
There is extensive intramolecular hydrogen bonding in the condensed phase.
D
Ice formed by heavy water sinks in normal water
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