In the reaction \(Zn+{ H }_{ 2 }{ SO }_{ 4 }\longrightarrow Zn{ SO }_{ 4 }+{ H }_{ 2 }\)
AZn is oxidised
BZn is reduced
C\({ H }_{ 2 }{ SO }_{ 4 }\) is oxidised
D\(Zn{ SO }_{ 4 }\) is reduced
Question - 4
In the given reaction \(2Fe{ Cl }_{ 3 }+Sn{ Cl }_{ 2 }\longrightarrow 2Fe{ Cl }_{ 2 }+Sn{ Cl }_{ 4 }\)the substance which is reduced is
ASn2+
BFe3+
CFe2+
DSn4+
Question - 5
In the reaction \(Cu+{ SO }_{ 4 }^{ 2- }+4{ H }^{ + }\longrightarrow { Cu }^{ 2+ }+2{ H }_{ 2 }O+A\)the product A is
ASO2
BSO3
CS2-
DS4
Question - 6
In the reaction \(2Mn{ O }_{ 4 }^{ - }+5{ C }_{ 2 }{ O }_{ 4 }^{ 2- }+16{ H }^{ + }\longrightarrow 2M{ n }^{ 2+ }+8{ H }_{ 2 }O+A\)the product A is
ACO2
BC
CCO
D\(C{ O }_{ 3 }^{ 2- }\)
Question - 7
In oxygen difluoride the oxidation number of oxygen is
A-2
B-1
C+2
D+1
Question - 8
The oxidation number of hydrogen in calcium hydride is
A+1
B-1
C+2
D+2
Question - 9
The oxidation number of Mn is +6 in
AKMnO4
BMn2O3
CMnO2
DK2MnO4
Question - 10
The oxidation number of iron in the reaction \([Fe\left( { CN } \right) _{ 6 }]^{ 4- }\longrightarrow [Fe\left( { CN } \right) _{ 6 }]^{ 3- }\)changes from