Nuclear Fusion

Q.

The strong nuclear force between nucleons is attractive but short range; the Coulomb force between protons is long range, but repulsive.

1. He gas is rare, so collisions between nuclei are also rare;
2. It happens and the we see in nature was formed by this method only in Earth's atmosphere;

Q. Identify X in the given nuclear reaction.

1. Neutron
2. Proton
3. Electron
4. H atom

Q.

Calculate the Q-value of the fusion reaction ${}^{4}He{+}^{4}He{=}^{8}Be$ Is such a fusion energetically favorable? Atomic mass of ${}^{8}Be$ is 8.0053 u and that of ${}^{4}He$ is 4.0026 u.

1. The Q value is positive and the reaction is energetically favorable
2. The Q value is negative and the reaction is not energetically favorable
3. The Q value is negative and the reaction is energetically favorable
4. The Q value is positive but the reaction is not energetically favorable

Q.

The loss of mass in a nuclear reaction is 0.45%. How much energy is released in the fusion of 2 Kg mass?

1. $9.03\times {10}^{14}\text{J}$
2. $4.05\times {10}^{14}\text{J}$
3. $4.05\times {10}^7\text{J}$
4. $9.03\times {10}^7\text{J}$

Q.

Two lithium nuclei in a lithium vapor at room temperature do not combine to form a carbon nucleus because

1. A lithium nucleus is more tightly bound than a carbon nucleus
2. Carbon nucleus is an unstable particle.
3. It is not energetically favorable
4. Coulomb repulsion does not allow the nuclei to come very close

Q.

If 1 g of Hydrogen is converted into 0.993 g of Helium in a thermonuclear reaction, then the energy released is

1. $83\times {10}^{7}J$
   

2. $63\times {10}^{10}J$
   

3. $73\times {10}^{14}J$
   

4. $23\times {10}^{20}J$

Q. Sun gives heat and light energy because of which of the following reaction?

1. Combustion
2. Nuclear reaction
3. Reduction
4. Explosion

Q.

Calculate the Q-value of the fusion reaction ${}^{4}He{+}^{4}He{=}^{8}Be$ Is such a fusion energetically favorable? Atomic mass of ${}^{8}Be$ is 8.0053 u and that of ${}^{4}He$ is 4.0026 u.

1. The Q value is negative and the reaction is energetically favorable
2. The Q value is positive and the reaction is energetically favorable
3. The Q value is negative and the reaction is not energetically favorable
4. The Q value is positive but the reaction is not energetically favorable

Q.

The strong nuclear force between nucleons is attractive but short range; the Coulomb force between protons is long range, but repulsive.

1. It happens and the we see in nature was formed by this method only in Earth's atmosphere;
2. He gas is rare, so collisions between nuclei are also rare;

Q.

Two lithium nuclei in a lithium vapor at room temperature do not combine to form a carbon nucleus because

1. A lithium nucleus is more tightly bound than a carbon nucleus
2. Carbon nucleus is an unstable particle.
3. It is not energetically favorable
4. Coulomb repulsion does not allow the nuclei to come very close