1 |
The conversion of potassium magnate to potassium permanganate by passing Cl2 Through aqueous solution of K2MnO4 is called. |
Contact process
Open hearth process
Stadeler's process
Thermite process
|
2 |
The aqueous solution of which substances is green in colour |
K2CrO4
K2CrO7
KMnO4
K2MnO4
|
3 |
The chemical composition of pyrolusite is. |
KMnO4
K2MnO4
MnO2
MnO
|
4 |
Colour of K2Cr2O7 is |
Red
Orange
Green
Yellow
|
5 |
Chlomyl chloride test is used for the confirmation of |
Cl-
CO3<sup>-2</sup>
NO3-
Cu2+
|
6 |
Which element shows highest oxidation state among these |
Zn
Fe
Mn
Sc
|
7 |
Galvanized iron is protected by a thin layer of |
Cr
Zn
Sn
Pb
|
8 |
To prevent corrosion, Iron pipes carrying drinking water are covered with zinc by |
alley formation
Electroplating
Galvanizing
Soldering
|
9 |
The substance which is added to remove impurities is known as |
Slag
Flux
Ore
Gangue
|
10 |
Which furnace is used to prepared steel |
Blast furnace
Pudding furnace
Bessemer converter
Pyrite furnace
|
11 |
Which is not coloured ion |
SO4<sup>-2</sup>
MnO4-3
CrO4<sup>-2</sup>
Cr2O7<sup>-2</sup>
|
12 |
Stainless steel is |
Compound
An element
Mixture
100% pure iron
|
13 |
Geometrical shape of [CO(NH3)6Cl3 |
linear
square planar
Octahedral
Trigonal hypyramid
|
14 |
Which complex shows zero oxidation state of the transition metal. |
[Fe(CO)5]
K3[Fe(CN)6]
K2[Fe(CN)6]
[Cu(NH3)4]SO4
|
15 |
Which one of the following complexes is chelate. |
Potassium hexacyanoferrate (II)
Diammine silver (I) Chloride
Tetracarbonylnikel (0)
Sodium dioxalatoplatinate (II)
|
16 |
The type of hybridization in PCl3 is. |
dsp2
sp3
dsp3
d2sp3
|
17 |
In IUPAC system, the name of K4[Fe(CN)6] is |
Potassium ferricynaide
Potassium ferrocynide
Potassium Hexacyanoferrate (II)
Poatssium hexacaynoferrate (III)
|