As compared ${}_{12}\mathrm{C}$ atom, ${}_{14}\mathrm{C}$ atom has

(a) Two extra protons and two extra electrons
(b) Two extra protons but no extra electrons
(c) Two extra neutrons and no extra electrons
(d) Two extra neutrons and two extra electrons

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If m, ${\mathrm{m}}_{\mathrm{n}}$ and ${\mathrm{m}}_{\mathrm{p}}$ are the masses of ${}_{\mathrm{Z}}\mathrm{X}_{\mathrm{A}}$ nucleus, neutron and proton respectively
(a) $\mathrm{m}<\left(\mathrm{A}-\mathrm{Z}\right){\mathrm{m}}_{\mathrm{n}}+{\mathrm{Zm}}_{\mathrm{p}}$        (b) $\mathrm{m}=\left(\mathrm{A}-\mathrm{Z}\right){\mathrm{m}}_{\mathrm{n}}+{\mathrm{Zm}}_{\mathrm{p}}$
(c) $\mathrm{m}=\left(\mathrm{A}-\mathrm{Z}\right){\mathrm{m}}_{p}+{\mathrm{Zm}}_{\mathrm{n}}$        (d) $\mathrm{m}>\left(\mathrm{A}-\mathrm{Z}\right){\mathrm{m}}_{\mathrm{n}}+{\mathrm{Zm}}_{\mathrm{p}}$

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

On the bombardment of neutron with Boron. $\mathrm{\alpha }$-particle is emitted and product nuclei formed is
(a) ${}_{6}\mathrm{C}_{{}_{12}}$          (b) ${}_{3}\mathrm{Li}_{6}$
(c) ${}_{3}\mathrm{Li}_{7}$           (d) ${}_{4}\mathrm{Be}_{9}$

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The average kinetic energy of the thermal neutrons is of the order of
(a) 0.03 eV         (b) 3 eV
(c) 3 KeV            (d) 3 MeV

Concept Questions :-

Mass-energy equivalent

Difficulty Level:

Which of the following isotopes is normally fissionable ?

(a) ${}_{92}\mathrm{U}_{238}$              (b) ${}_{93}\mathrm{Np}_{239}$
(c) ${}_{92}\mathrm{U}_{235}$              (d) ${}_{2}\mathrm{He}_{4}$

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The process by which a heavy nucleus splits into light nuclei is known as
(a) Fission            (b) $\mathrm{\alpha }$-decay
(c) Fusion             (d) Chain reaction

Concept Questions :-

Mass-energy equivalent

Difficulty Level:

The explosion of the atomic bomb takes place due to

(a) Nuclear fission           (b) Nuclear fusion
(c) Scattering                 (d) Thermionic emission

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

In nuclear reaction ${}_{2}\mathrm{He}_{4}+{}_{\mathrm{Z}}\mathrm{X}_{{}_{\mathrm{A}}}\to {}_{\mathrm{z}+2}\mathrm{Y}_{\mathrm{A}+3}+\mathrm{A}$, A denotes
(a) Electron            (b) Positron
(c) Proton               (d) Neutron

Concept Questions :-

Types of decay
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Energy generation in stars is mainly due to

(a) Chemical reactions               (b) Fission of heavy nuclei
(c) Fusion of light nuclei             (d) Fusion of heavy nuclei

Concept Questions :-

Mass-energy equivalent
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Fusion reaction is initiated with the help of
(a) Low temperature         (b) High temperature
(c) Neutrons                     (d) Any particle

Concept Questions :-

Mass-energy equivalent