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WorksheetsChemical reaction and equations
Total questions: 25
Worksheet time: 13mins
A reaction in which one reactants break down into two or more products
Displacement reaction
Redox reaction
Decomposition reaction
Combination reaction
Which one of the following is an unbalanced equation
Zn + H2SO2 -----> ZnSO4 + H2
C + O2 -----> CO2
NaCl + AgNO3 -----> AgCl + NaNO3
BaCl2 + H2SO2 -----> BaSO4 + HCl
What will happen when iron nail is putted into copper sulphate solution
Iron nail becomes brownish
Iron nail remains as same
Iron nail will get dissolve in the solution
Blue colour of copper sulphate solution fades
Which type of reaction is this ?
Double displacement reaction
Decomposition reaction
Redox reaction
None of the Above
What are the types of decomposition reaction
Thermal, oxidation,Photolytic
Thermal,Photolytic,
Electrolytic
Endothermic,
Exothermic,Reduction
None of the above
Pb + CuCl2 → PbCl2 + Cu
The above reaction is an example of:
combination reaction
Double displacement
Decomposition
Displacement reaction
The process by which addition of oxygen takes place is called
Oxidation reaction
Reduction reaction
Exothermic reaction
Endothermic reaction
Reaction in which heat is given out is known as
Thermal decomposition reaction
Endothermic reaction
Exothermic reaction
Displacement reaction
Before burning in air, the magnesium ribbon is cleaned to:
Make the ribbon surface shinier
Remove the layer of magnesium oxide from the ribbon surface
Remove the layer of magnesium carbonate from the ribbon surface
Remove the moisture from the ribbon surface
The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:
Exothermic process
Endothermic process
Physical process
Reversible process
It is necessary to balance a chemical equation in order to satisfy the law of:
Conservation of motion
Conservation of momentum
Conservation of energy
Conservation of mass
You are given the following chemical reaction:
Combination reaction as well as double displacement reaction
Redox reaction as well as displacement reaction
Double displacement reaction as well as redox reaction
Decomposition reaction as well as displacement reaction
…………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on
(a)
Following is given a diagram showing an experimental set-up:
Distillation of water
Purification of water
Electrolysis of water
Hydrolysis
The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given above:
identify the reducing and oxidizing agent in this reaction
(a)
The chemical formula of lead sulphate is
Pb2SO4
Pb(SO4)2
PbSO4
The following reaction is an example of a
4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)
(i) displacement reaction
(ii) combination reaction
(iii) redox reaction
(iv) neutralisation reaction
(i) and (iv)
(ii) and (iii)
(i) and (iii)
(iii) and (iv)
Which option denotes a double displacement reaction?
A + B + C
A + B → C
AC + BD → AD + BC
AC + B → AB + C
Which of the following statement about the reaction is correct?
It is a decomposition reaction and endothermic in nature.
It is a combination reaction
It is a decomposition reaction and accompanied by release of heat.
It is a photolytic decomposition reaction and exothermic in nature.
Oxidation is the gain of ………….. or loss of …………..
(a)
In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of :
N2
Cl2
H2
O2
Consider the reaction :
KBr (aq) + AgNO3 (aq) → KNO3 (aq) + AgBr (s)
This is an example of :
Decomposition reaction
Double displacement reaction.
Combination reaction
Displacement reaction.
The equation
Cu + xHNO3 -> Cu(NO3)2 + yNO2 + 2H2O
The values of x and y are
3 and 5
5 and 6
4 and 2
1 and 6
Zn + H2SO4 ->ZnSO4 + H2
Above reaction is
Decomposition reaction
displacement reaction
Combination reaction
Synthesis reaction
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
