| 1 |
Misch mental is
|
A. An alloy of Aluminium
B. A mixture of chromium and lead chromate
C. An alloy of lanthanoid metals
D. An alloy of copper
|
| 2 |
An oxidixing agent
|
A. K2Cr2O7
B. H2SO4
C. FeSO4
D. K2SO4
|
| 3 |
Addition of iron fillings to CuSO4solution caused precipitation of Cu owing to the
|
A. Reduction of Cu2+
B. Oxidation of Cu2+
C. Reduction of Fe
D. Reduction of Fe3+
|
| 4 |
Non-formation of menisus by Hg in presence of O3is due to the formation of
|
A. Mercuric oxide
B. Mercurous oxide
C. Mercuric chloride
D. Mercurous chloride
|
| 5 |
f-block elements are called :
|
A. Alkali metal
B. Alkakline earth metals
C. Transition elements
D. Electron deficient elements
|
| 6 |
Mercury is the only metal which is liquid at 0°C. this is due to its
|
A. Very high ionization energy and weak metallic bond
B. Low ionization potential
C. High atomic weight
D. High vapour pressure
|
| 7 |
Which is the formula of tetra-ammine chloro-nitro platinum (IV) sulphate
|
A. [Pt(NH3)4(NO2)] SO4
B. [Pt NO2CI(NH3)4] SO4
C. [Pt CI(NO2) (NH3)4] SO4
D. [Pt (NH3)4(NO2) CI] SO4
|
| 8 |
Fe+3and Mn2+are strong paramagnetic because the number of unpaired electrons in each is
|
A. 4
B. 5
C. 6
D. 7
|
| 9 |
How many mole of acidfied FeSO4solution can be completely oxidized by one mole of KMNO4?
|
A. 10
B. 5
C. 6
D. 2
|
| 10 |
IIB elements (Zn, Cd, Hg) and III B elements (Sc, Y and La) are
|
A. Non typical transition element
B. Typical transition element
C. Normal elements
D. Inner transition element
|
| 11 |
The equivalent weight of KMnO4(formula weight = M) when it is used as an oxidant in neutral medium is
|
A. M
B. M/2
C. M/3
D. M/5
|
| 12 |
The number of unpaired electrons in Fe3+(Z = 26) are
|
A. 5
B. 6
C. 3
D. 4
|
| 13 |
Oxalic acid oxidizes to:
|
A. CO
B. CO2
C. Oxalates
D. None of these
|
| 14 |
The oxidation number of Ni in [Ni(CO)4] is
|
A. +1
B. 0
C. +4
D. -4
|
| 15 |
Bronze is an alloy of Cu and
|
A. Zn
B. As
C. Sb
D. Sn
|
| 16 |
Interstitial compounds have
|
A. Half formula
B. Fixed formula
C. Indefinite formula
D. None
|
| 17 |
The total number of rare earth elements is
|
A. 8
B. 32
C. 14
D. 10
|
| 18 |
Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements
|
A. Transition elements show variable oxidation states
B. Their salts are coloured
C. They can be used as catalyst
D. All of them are metals
|
| 19 |
Corrosion may be prevented by
|
A. Allcying
B. Paints
C. Metallic coatings
D. All
|
| 20 |
In physical and chemical properties, transition elements show
|
A. Similarities
B. Dissimilarities
C. Both of these
D. Somestimes similarities, sometimes dissimilarities
|
| 21 |
The coordination number of iron in [Fe(H2O)6]3+is
|
A. 2
B. 3
C. 4
D. 6
|
| 22 |
Which of the following element is responsible for oxidation of water to O2in biological process?
|
A. Fe
B. Mn
C. Cu
D. Mo
|
| 23 |
Series starting from57La,42Hf -80Hg is in the period:
|
A. 4th
B. 5th
C. 6th
D. 7th
|
| 24 |
In the electronic configuration of Cr one electron from 4s sub-shell is transfered to 3d sub-shell because
|
A. The 3rd orbital is of lower energy than 4s
B. The 4s orbital is of equal energy to 3d orbital
C. The half filled d-subshell is more stable than incomplete d-sub shell
D. 6 unpaired electrons make Cr more paramagnetic
|
| 25 |
The percentage of carbon in different types of iron products is in the order of
|
A. Cast iron > wrought iron > steel
B. Wrought iron > steel > cast iron
C. Cast iron > steel > wrought iron
D. Cast iron = steel > wrought iron
|
| 26 |
Which element does not belong to 4d series
|
A. Y
B. Zr
C. Mo
D. Zn
|
| 27 |
In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is
|
A. 3
B. 2
C. 5
D. Zero
|
| 28 |
Which of the following transition metal ions will have definite value of magnetic moment?
|
A. Se3+
B. Ti3+
C. Cu+
D. Zn2+
|
| 29 |
Which of the following d-block elements can show the highest oxidation number in its compounds
|
A. Chromium
B. Copper
C. Nickel
D. Manganese
|
| 30 |
The less reactivity of transition metal is due to
|
A. High heats of sublimation
B. High ionization energies
C. Low heats of salvation
D. All these
|