Are my answers to these Chemistry questions correct?

Question

The metric system unit of energy is the _______.

A. Pascal

B. Joule

C. Kelvin

D. Erg

E. None of the Above

 2. The _______ states that energy cannot be created or destroyed; it can only change form.

A. First Law of Thermodynamics

B. Second Law of Thermodynamics

C. Third Law of Thermodynamics

D. Fourth Law of Thermodynamics

E. None of the Above

 

3. _______ is the energy stored in an apple hanging on a tree.

A. A Joule

B. Kinetic energy

C. Potential energy

D. Specific heat

E. None of the Above

 

4. _______ is the energy required to lift an object of 102 grams, 100 cm straight up, at a constant speed.

A. A Joule

B. Kinetic energy

C. Potential energy

D. Specific heat

E. None of the Above

 

5. _______ is the most important source of energy for humans.

A. Wind power

B. Coal

C. Water power

D. Food

E. None of the Above

Answer 1

They look fine to me except Question 4. Although once moved, the energy the object has is potential energy, the energy required to move it is called work. Since the object is lifted at constant speed, the force required to lift it equals the object's weight. And that force multiplied by the distance it is expended is called work. So I would answer that question as "None of the above".