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
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
By fusing dry silver chloride with sodium carbonate,we get pure
- (a)
Chlorine
- (b)
carbon dioxide
- (c)
silver
- (d)
sodium
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
CuSO4 is commerically made from Cu scarp by
- (a)
dissolving it in hot conc.H2SO4
- (b)
spraying warm dil. H2SO4
- (c)
heating with sodium sulphate
- (d)
heating with sulphar
Which one of the following changes involves a bond forming process ?
- (a)
stretching of rubber
- (b)
rusting of iron
- (c)
dissolving of sugar in water
- (d)
emission of rays by radioactive process
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%
Cassiterite is an alloy contains
- (a)
tin
- (b)
mercury
- (c)
lead
- (d)
iron
In the production of iron from Fe2O3 the reducing agent used is
- (a)
CO
- (b)
C
- (c)
AI
- (d)
Cr
A pale green crystalline salt of metal M dissolves farely in water. It gives a brown precipitate on addition of aqueous NaOH.The metal salt solution also gives a black precipitate on bubbling H2S in acid medium.An aqueous soluton of metal salt decolourises the pink colour of the permanganate solution.The metal in the metal salt solution is
- (a)
copper
- (b)
aluminium
- (c)
lead
- (d)
iron
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 process of concentrating Ag and Au ores is based on their solubility in
- (a)
NH3
- (b)
HCL
- (c)
HNO3
- (d)
KCN
A metal is left exposed to atmosphere for sometimes. It becomes coated with green basic carbonate.The metal must be
- (a)
Ag
- (b)
Cu
- (c)
Al
- (d)
Zn
A white solid X on heating gives off a gas which turns lime water milky and a residue that is yellow when hot and white in cold.The compound X is
- (a)
PbCO3
- (b)
ZnCO3
- (c)
CaCO3
- (d)
Na2CO3
The substance that sublimes on heating:
- (a)
MgCL2
- (b)
AgCL
- (c)
HgCL2
- (d)
NaCL
Mercury can be transported in a metal containers made of
- (a)
Ag
- (b)
Pb
- (c)
Fe
- (d)
Al
Which of the following statement is false?
- (a)
Tin (IV) chloride is made by dissolving excess of KI solution
- (b)
Mercury (II) iodide dissolve in excess of KI solution
- (c)
Zinc dissolves in hot NaOH solution
- (d)
CO reduce iron (III) oxide to iron
KI and K2SO4 solution when mixed give
- (a)
CuI2 + K2SO4
- (b)
Cu2I2+ K2SO4
- (c)
K2SO4 + Cu2I2 +I2
- (d)
K2SO4 + Cu2I +I2
Red lead Pb3O4 reacts with conc. HNO3 to give
- (a)
Pb2+ and Pb4+
- (b)
Pb2+ and PbO2
- (c)
Pb4+ and PbO
- (d)
PbO and PbO2
The element which forms ions in dimeric state is:
- (a)
Hg
- (b)
Fe
- (c)
Ni
- (d)
Be
plumbosolvency means dissolving of lead in
- (a)
water
- (b)
acids
- (c)
alkalies
- (d)
organic solvents
cyanide process is used for the extraction of
- (a)
Barium
- (b)
aluminimum
- (c)
boron
- (d)
silver
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 one of the following is not a use of mercury ?
- (a)
the preparation of colomel
- (b)
mercury lamps
- (c)
extraction of silver
- (d)
making amalgans
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
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