Let there be an object having some chemicals in it. It starts moving with a uniform velocity v and a chemical reaction starts happening. In this case, which of the following statement/s is/are correct ?
- 1. Chemical reactions happening in the system cannot change the velocity v of the center of mass of the object.
- 2. Chemical reactions happening in the system cannot change the kinetic energy of the particles inside with respect to the center of mass of object.
Select the correct answer using the code given below :
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2019
Statement 2: Chemical reactions often involve changes in the internal energy of the system, which can include changes in the kinetic energy of the particles relative to the center of mass (manifesting as temperature changes). For example, an exothermic reaction releases energy, which increases the kinetic energy of the constituent particles. Therefore, chemical reactions *can* change the kinetic energy of the particles inside with respect to the center of mass of the object.