Which aspect is similar in both chemical and nuclear reactions? a. both involve nuclear fusion. b. both involve nuclear fission. c. both may release heat and light. d. both involve the exchange of electrons.

Hi!

The correct answer would be C

The key difference between the two types of reactions is that nuclear reaction involves a change in the nucleus of the atom(s) involved in the reaction, where as atoms in chemical reactions do not undergo any change in their nucleus.

Option A and B both deal with characteristics that pertain to only nuclear reactions, as both nuclear fusion and fission involve a change in the nuclear state of the initial elements.

Option D deals with the characteristic that pertains only to chemical reactions, which involve the transfer -gain or loss of electrons.

However, both of these types of reactions may be exothermic, with the capacity to release this energy as light, or heat.

Hence, Option C is correct

Hope this helps!

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.