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WorksheetsChemical Reactions and Equations - 02
Total questions: 10
Worksheet time: 5mins
Chemical formula of quick lime is :
CaO
Ca(OH)2
CaCO3
CO2
Silver article turns black when kept in open for a few days due to formation of
H2S
AgS
AgSO4
Ag2S
Heating of ferrous sulphate gives which of the following product?
Ferric oxide
Sulphur dioxide
Sulphur trioxide
All the above
Which of the following product is formed when calcium oxide reacts with water?
Slaked lime
Carbon dioxide
Calcium oxide
Oxygen gas
A redox reaction is one in which :
Both the substance are reduced
Both the substance are oxidized
An acid is neutralized by the base
One substance is oxidized while the other is reduced
Rusting of an iron is an example of :
Reduction
Ionization
Oxidation
Dissociation
Which of the following does not corrode when exposed to the atmosphere-
Fe
Cu
Au
Mg
In the following equation:
Na2CO3 + xHCI -> 2NaCI +CO2 + H2O, the value of x is
1
2
3
4
7.The equation
Cu + xHNO3 -> Cu(NO3)2 + yNO2 + 2H2O
The values of x and y are
3 and 5
8 and 6
4 and 2
7 and 1
3.What happens when copper rod is dipped in iron sulphate solution :-
Copper displaces iron
Blue color of copper sulphate solution is obtained
No reaction takes place
Reaction is exothermic
