JEE Main Chemistry - Chemistry of Heavier Metals
Exam Duration: 60 Mins Total Questions : 30
When a copper (II) sulphate is treated with excess ammonia, it forms
- (a)
a black precipitate
- (b)
a deep blue solution
- (c)
a red precipitate
- (d)
a white precipitate turning black
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
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
Which one of the following is not the characteristic property of the transition elements ?
- (a)
variable oxidation states
- (b)
diamagnetric behaviour
- (c)
formation of complexes
- (d)
catalytic acitivity
Maximum number of oxidation states is exhibited by the atom having the configuration
- (a)
(n-1)d2ns2
- (b)
(n-1)d2ns2
- (c)
(n-1)d10ns2
- (d)
(n-1)d2ns1
Which one of the following metal ions is paramagnetic ?
- (a)
Cu+
- (b)
Zn2+
- (c)
Ti3+
- (d)
Sc3+
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
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%
Cassiterite is an alloy contains
- (a)
tin
- (b)
mercury
- (c)
lead
- (d)
iron
White lead is
- (a)
Pb(OH)2.PbCO3
- (b)
Pb(OH)2.Pb(CH3oo)2
- (c)
Pb(OH)2
- (d)
PbCO3
When tin is heated with concentrated nitric acid, the compound formed is
- (a)
stannic nitrate
- (b)
metastannic acid
- (c)
stannous nitrate
- (d)
stannic oxide
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
The process of concentrating Ag and Au ores is based on their solubility in
- (a)
NH3
- (b)
HCL
- (c)
HNO3
- (d)
KCN
The substance that sublimes on heating:
- (a)
MgCL2
- (b)
AgCL
- (c)
HgCL2
- (d)
NaCL
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
Which of the following metals will not react with solution of CuSO4 ?
- (a)
Ag
- (b)
Zn
- (c)
Mg
- (d)
Fe
Copper displaces the metal in the salt solution of
- (a)
AgNO3
- (b)
ZnSO4
- (c)
FeSO4
- (d)
CaCl
Tin amalgam is used for making
- (a)
rollers
- (b)
mirrors
- (c)
cigarette wrapers
- (d)
cans
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
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 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 of the following oxides will give the metal on heating ?
- (a)
Zno
- (b)
HgO
- (c)
Al2O3
- (d)
TiO2