Question

For a given mass of reactants, the energy released is greatest for a reaction involving

A) slow oxidation
B) rapid oxidation
C) fission
D) fusion

Answer 1

Answer: Option (D) is the correct answer.

Explanation:

In fusion reaction, two small nuclei combine together to result in the formation of a large nuclei.

Whereas in fission reaction, large nuclei dissociates into two or more small nuclei.

Nuclear fusion releases more energy as compared to nuclear fission.

For example, two hydrogen nuceli fuse together and result in the formation of helium atom along with release of energy.

    $^{2}_{1}H + ^{2}_{1}H \rightarrow ^{4}_{2}He + Energy$

Answer 2

Answer:D

Explanation:

Fusion is the coming together of two nuclei to form a heavier nucleus with release of tremendous amount of energy. The greatest energy on earth can be released only by a fusion reaction. Fusion is a high temperature process. It has been impossible to achieve fusion in such a way that its energy can be harnessed as an alternative source of energy.