Burning of coal is an example of_________
Burning of coal is an example of_________
The correct option is A A chemical change
Explanation for correct option
(A) A chemical change.
Coal burning is a chemical change as new things are formed as a result of this change. Coal combustion takes O2 and produces CO2. All combustion occurs by chemical reactions. Example - Burning of wood
Explanation for incorrect option.
(B) A reversible change.
A change that can be reversed to form the original substance is called reversible change. Example- Melting of ice
(C) A physical change.
Physical changes involve the change in physical properties, not altering the chemical composition of the substance. Example- conversion of ice into water.
(D) An undesirable change.
Changes that we would not want to occur are called undesirable changes. Example- Souring of milk.
Hence option (A) is the correct option
A chemical change
Explanation for correct option
(A) A chemical change.
Coal burning is a chemical change as new things are formed as a result of this change. Coal combustion takes O2 and produces CO2. All combustion occurs by chemical reactions. Example - Burning of wood
Explanation for incorrect option.
(B) A reversible change.
A change that can be reversed to form the original substance is called reversible change. Example- Melting of ice
(C) A physical change.
Physical changes involve the change in physical properties, not altering the chemical composition of the substance. Example- conversion of ice into water.
(D) An undesirable change.
Changes that we would not want to occur are called undesirable changes. Example- Souring of milk.
Hence option (A) is the correct option
