General Knowledge Quiz - General Science - Chemistry - Chemical Reactions & Equations:
1.
Fe2O3 + 2 Al --> Al2O3 + 2Fe
The
above reaction is an example of ____
1.Combination 2.Decomposition
3.Displacement 4.Double-displacement
2.
What happens when dil. Hydrochloric acid is added to iron fillings?
1.Hydrogen gas and iron chloride are
produced
2.Chlorine gas and Iron Hydroxide are
produced
3.No reaction takes place
4.Iron salt and water are produced
3.
CaO + H2O --> Ca(OH)2. This is ____ Reaction
1.Combination 2.Decomposition
3.Displacement 4.Double-displacement
4.
Cu + O2 --> 2CuO. This is _______ Reaction
1.Oxidation 2.Reduction
3.Redox Reaction 4.none of the above
5.
Zn + 2AgNO3 --> ____ + 2Ag
1.ZnNO3 2.2ZnNO3
3.Zn(NO3)2 4.Zn(NO3)4
6.
Corrosion can be prevented by ___
1.Painting 2.Galvanizing
3.Greazing 4.all
the above
7.
Rancidity can be prevented by adding ___
1.Vitamins 2.Oxides
3.Carbids 4.Anti
Oxidants
8.
An oxidation reaction involves addition of ____ or Removal of ____
1.Oxygen only
2.Hydrogen only
3.Oxygen or Removal of Hydrogen
4.Hydrogen or removal of Oxygen
9.
2AgCl --> 2Ag + Cl2 (at Sunlight).
This
is a ____ Reaction
1.Photo Chemical 2.Thermal decomposition
3.Exothermic 4.Endothermic
10.
A neutralization reaction is a ___ reaction
1.Combination 2.Decomposition
3.Displacement 4.Double-displacement
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