Chapter 5, Problem 1SQ

Which of the following statements is not correct?

1. a. Energy cannot be created or destroyed.
2. b. Energy cannot change from one form to another.
3. c. Energy rends to disperse spontaneously.

Summary Introduction

Introduction: “Energy cannot be created and destroyed, but it can be converted from one form to another”. It is the capacity to do work. It can tend to spread or disperse until no part of the system has more than one part.

Answer to Problem 1SQ

Correct answer:

Option b. is given as “Energy cannot change from one form to another”. The statement is incorrect.

Therefore, option b. is correct.

Explanation of Solution

Reasons for the correct answer:

Energy can be converted from one form to another. During photosynthesis, solar energy is converted to chemical energy. So, the statement “Energy cannot change from one form to another” is wrong.

Hence, option b. is correct.

Reasons for the incorrect answer:

Option a. is given as “Energy cannot be created or destroyed”. This is the first law of thermodynamics. The given statement is true.

So, option a. is incorrect answer.

Option c. is given as “Energy tends to disperse spontaneously”. This is the second law of thermodynamics. The given statement is true.

So, option c. is incorrect answer.

Hence, options a., and c. are incorrect answers.

Conclusion

Energy cannot change from one form to another is not the correct statement.