Nuclei Test - 4...

Binding energy per nucleon versus mass number curve for nuclei is shown in fig.W, X, Y, and Z are four nuclei indicated on the curve. The process that would release energy is 

A stationary $$U^{238}$$ nucleus undergoes $$\alpha$$- decay. If the kinetic energy of product nucleus is $$E$$, the total energy released  in the process is-

The binding energy per nucleon of deuteron is $$1.2MeV$$ and that of the helium atom is $$7.1MeV$$. What is the energy released, if two deuteron atoms combine to form a single helium atom?  

The number of atoms of the $$He$$ in $$104\ amu$$ is:

What would be the energy required to dissociate completely $$1$$ g of $$Ca \ (40)$$ into its constituent particles? 
Given: Mass of proton = 1.007277 amu,
Mass of neutron = 1.00866 amu,
Mass of Ca-40= 39.97545 amu
(take amu = 931 MeV)

The binding energy of deutron is $$2.2 \space MeV$$ and that of $$^4_2 He$$ is $$28 \space MeV$$. If two deutrons are fused to form one $$^4_2 He$$ then the energy released is:

If $$x \ g$$  of $$A$$ (atomic mass $$50$$) contains $$n$$ atoms, how many atoms are there in $$20 \ x \ g \ B$$ (atomic weight $$100$$)

The binding energy per nucleon of $$^7_3 Li$$ and $$^4_2 He$$ nuclei are 5.60 MeV and 7.06 Me V, respectively. In the nuclear reaction $$^7_3 Li + ^1_1 He \longrightarrow ^4_2 H + ^4_2 He + Q$$ the value of energy Q released is

Neutron decay in free space is given as follows:
$$_{e}n^{1} \rightarrow_{0}H^{1}+_{-o}e^{0}+[]$$
Then the parenthes is represents a 

A slow neutron strikes a nucleus of $$^{235}_{92} {U}$$ splitting it into lighter nuclei of $$^{141}_{56} {Ba}$$ and $$^{92}_{36} {Kr}$$ along with three neutrons. The energy released in this reaction is :
(The masses of Uranium, Barium and Krypton in this reaction are $${235.043933}$$ a.m.u, $${140.917700}$$ a.m.u and $${91.895400}$$ a.m.u respectively. The mass of a neutron is $$1.008665$$ a.m.u)