WorksheetsScience CHAPTER - Chemical reactions and Equations
Total questions: 10
Worksheet time: 2mins
One of the following is an exothermic reaction. This is:
electrolysis of water
conversion of limestone into quicklime
process of respiration
process of photosynthesis
Which of the following is a type of chemical reaction
Combination reactions
Magnesium hydroxide
Displacement reaction
Above (a) and (c)
This is the example of:
CaCO3 ------ CaO + CO2
Decomposition reaction
Displacement reaction
Double displacement reaction
Oxidation
the removal of oxygen from a substance is called
Oxidation
Corrosion
Reduction
Rancidity
The Process of Respiration
Oxidation reaction which is endothermic.
Reduction reaction wich is exothermic.
Combination reaction wich is endothermic.
An oxidation reaction which is exothermic
The term used to indicate the development of and present smell and taste in fat and oil containing foods to aerial oxidation
Acidity
Radioactivity
Rabidity
Rancidity
The chemical reaction involved in the corrosion of iron metal is that of:
Oxidation as well as displacement
Reduction as well as combination
Oxidation as well as combination
Reduction as well as displacement
A white precipitate can be obtained by adding dilute sulphuric acid to:
CuSO4 solution
NaCl solution
BaCl2 solution
Na2SO4 solution
A white precipitate will be formed if we add common salt solution to:
Ba(NO3)2 solution
KNO3 solution
AgNO3 solution
Mg(NO3)2 solution
In order to prevent the spoilage of potato chips, they are packed in plastic in an atmosphere of :
Cl2
H2
N2
O2
