Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one. (i) Process – A is a chemical change. (ii) Process – B is a chemical change (iii) Both processes A and B are chemical changes. (iv) None of these processes is a chemical change

Answer: (iii) Both processes A and B are chemical changes

Physical change – A substance is said to undergo a physical change when only the physical properties such as the shape, size, colour, state or appearance of the substance change. Its chemical composition remains intact.

Chemical change – A substance is said to undergo a chemical change when the chemical properties of a substance alter. As a result, there is either formation or breaking of atomic bonds at the molecular level.

  • The decomposition of animal waste produces biogas.
  • A chemical change is illustrated by the decomposition process, which involves changes in the composition of the components involved. As a result, Process A is an instance of chemical transformation.
  • When biogas is burnt, it undergoes chemical transformation, resulting in the formation of new products.
  • In response to the question, it’s important to note that both processes A and B involve chemical changes.

Was this answer helpful?

 
   

4.5 (1)

(1)
(0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question