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1.
In the conversion of 
to 
the oxidation number of chromium :
to the oxidation number of chromium :
2.
In which of the following, the oxidation number of oxygen has been arranged in increasing order?
3.
Oxidation number of sodium in sodium amalgam is :
4.
The apparatus in which standard solution is prepared is known as :
5.
is used as ....... Indicator for 
titrations.
is used as ....... Indicator for titrations.
6.
The oxidation number of N in 
is :
is :
7.
Which can act as oxidant?
8.
What weight of 
is needed to convert 5 g of iodine into iodic acid according to the reaction, 
is needed to convert 5 g of iodine into iodic acid according to the reaction,
9.
In which 
acts as oxidant, while reacting with :
acts as oxidant, while reacting with :
10.
and 
reduce 
, 
can reduce 
and 
can reduce:
and reduce , can reduce and can reduce: