Chemistry - Chemistry of Heavier Metals
Exam Duration: 45 Mins Total Questions : 30
By the interaction between FeSO4 solution and acidified KMnO4 solution
- (a)
iron (III) is reduced
- (b)
iron (II) is reduced
- (c)
KMnO4 is oxidised
- (d)
iron (II) is reduced
when CuSO4 reacts with aq KI, the products are
- (a)
CuI2 + K2SO4
- (b)
Cu2I2 + K2SO4
- (c)
Cu2I2 + K2SO4 + I2
- (d)
Cu + k2SO4 + I2
Stainless steel contains
- (a)
2.6 to 5.0% Ni
- (b)
1.5 to 2.0% Cr
- (c)
17 to 18% Cr and 8% Ni
- (d)
3.6% Mn
Ferrous sulphate has many uses.one of its important uses is
- (a)
as a red pigment
- (b)
in the manufacture of blue black ink
- (c)
in the manufacture of chalks
- (d)
in the preparation of H2S
German silver is an alloy of
- (a)
Cu and Zn
- (b)
Au,Cu, and Zn
- (c)
Ag and Ni
- (d)
Cu,Zn and Ni
When pyrolusite is fused with KOH in presence of Cu,the mass becomes
- (a)
green
- (b)
black
- (c)
red
- (d)
pink
The color of the solution obtained by adding excess KI solution to HgCI2,, solution is
- (a)
orange
- (b)
reddish brown
- (c)
colourless
- (d)
red
Transition elements
- (a)
have low melting point
- (b)
exhibit variable oxidation states
- (c)
do not form coloured ions
- (d)
show inert pair effect
Which one of the following metal ions is paramagnetic ?
- (a)
Cu+
- (b)
Zn2+
- (c)
Ti3+
- (d)
Sc3+
Blue vitriol is the name of
- (a)
ZnSO4 . 7HO
- (b)
FeSO4 . 7H2O
- (c)
CuSO4 . 5H2O
- (d)
CuSO4 . H2O
The oxidation state of iron in [Fe(H2O)5NO]2+ is
- (a)
1
- (b)
2
- (c)
3
- (d)
4
The type of iron obtained from blast furance is
- (a)
wrought iron
- (b)
cast iron
- (c)
pig iron
- (d)
mild steel
Soldering alloy contains
- (a)
Pb 50%; Sn 50%
- (b)
Pb 70%; Sn 30%
- (c)
Pb 50%; Sn 30%; Cu 20%
- (d)
Pb 30%; Sn 70%
Which one of the following is the purest form of iron ?
- (a)
pig iron
- (b)
wrought iron
- (c)
steel
- (d)
cast iron
In the production of iron from Fe2O3 the reducing agent used is
- (a)
CO
- (b)
C
- (c)
AI
- (d)
Cr
Bronze is an alloy of
- (a)
Sn and Pb
- (b)
Sn and Cu
- (c)
Sn,Cu,Ag
- (d)
Sn,Zn ,Ni
Metallic silver may be obtainedform AgCl by
- (a)
heating it in current of H2
- (b)
fusing it with sand
- (c)
treatment with Cd and H2SO4
- (d)
fusing it with NA2CO3
The metal which does not give H2 on treatement with dil HCL is:
- (a)
silver
- (b)
iron
- (c)
zinc
- (d)
cadmium
Which one of the following is not a mineral of silver ?
- (a)
Horn silver
- (b)
Silver glance
- (c)
German silver
- (d)
Ruby silver
The substance that sublimes on heating:
- (a)
MgCL2
- (b)
AgCL
- (c)
HgCL2
- (d)
NaCL
Zinc and silver can be separated from each other by
- (a)
heating with conc.NaOH solution
- (b)
treatment with dil.HNO3
- (c)
fractional crystallisation
- (d)
None of the above
PbCl4 exists but PbBr4 and PBI4 do not because
- (a)
Br and I ions are bigger in size
- (b)
of inability of bromine and iodine to oxidise Pb2+ to Pb4+
- (c)
of more electroposotive nature of bromine and iodine
- (d)
Cl2 is a gas
Lead is used in
- (a)
making storage batteries
- (b)
covering telephone wires
- (c)
making alloys like type metal
- (d)
All the above
cyanide process is used for the extraction of
- (a)
Barium
- (b)
aluminimum
- (c)
boron
- (d)
silver
The metal extracted by leaching of a cyancide is
- (a)
Mg
- (b)
Ag
- (c)
Cu
- (d)
Na
From which one of the following forms of iron,other forms of iron can be produced
- (a)
Cast iron
- (b)
Pig iron
- (c)
Wrought iron
- (d)
Steel
Which is the correct formula for diammine silver chloride ?
- (a)
AgCI.NH3
- (b)
[Ag(NH3)2]CI
- (c)
[Ag(NH4)2]CI
- (d)
[Ag(NH2)3]CI
Which is the metal M in the following equation :
\(4M+8C\overline { N } +{ 2H }_{ 2 }0+{ O }_{ 2 }\rightarrow 4[M(C\overline { N } { ) }_{ 2 }{ ] }^{ 2 }+4OH\)
- (a)
Cu
- (b)
Au
- (c)
Fe
- (d)
Zn
Which is the metal 'M' in the following equation ?
\(2[Ag(C\overline { N } { ) }_{ 2 }]+M\rightarrow 2Ag+[M(CN{ ) }_{ 4 }{ ] }^{ 2 }\)
- (a)
Au
- (b)
Cu
- (c)
Fe
- (d)
Zn
Which of the following oxides will give the metal on heating ?
- (a)
Zno
- (b)
HgO
- (c)
Al2O3
- (d)
TiO2
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