Group Displacement Law

Q. Alkaline earth metal is radioactive. It and its daughter element decay by emitting 3 $\alpha$-particles in succession. In what group should the resulting element be formed?

1. 13
2. 14
3. 12
4. 10

Q.

If radioactive atom does one alpha and 2 beta decay, which ones of the following statements are true for this atom?
I. Its isotope is formed.
II. Its location in the periodic table does not change.
III. Its mass number decreases.

1. I, II are correct

2. Only II is correct
3. All are correct.
4. Only I is correct

Q.

Name two quantities which remain conserved during nuclear reaction.

Q. The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively:

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Q. Deuterons when bombarded on a nuclide produce ${}_{18}A{r}^{38}$ and neutrons. The target is

1. ${}_{17}C{l}^{35}$
2. ${}_{17}C{l}^{37}$
3. ${}_{19}{K}^{27}$
4. ${}_{19}{K}^{39}$

Q. In the reaction ${}_{3}L{i}^6+(?){\to }_{2}H{e}^4{+}_1{H}^3$. The missing particle is

1. Electron
2. Neutron
3. Proton
4. Deutron

Q. In the reaction, $Po\stackrel{-\alpha }{\to }Pb\stackrel{-\beta }{\to }Bi$, if Bi, belongs to group 15, to which Po belongs

1. 14
2. 15
3. 13
4. 16

Q. In the reaction ${}_{3}L{i}^6+(?){\to }_{2}H{e}^4{+}_1{H}^3$. The missing particle is

1. Electron
2. Neutron
3. Proton
4. Deutron

Q. The number of $\alpha$ and $\beta$-particles emitted during the transformation of ${}_{90}T{h}^{232}$ to ${}_{82}{P}^{208}$ are respectively

1. 4, 2
2. 2, 2
3. 8, 6
4. 6, 4

Q. The number of $\alpha$ and $\beta$-particles emitted during the transformation of ${}_{90}T{h}^{232}$ to ${}_{82}{P}^{208}$ are respectively

1. 4, 2
2. 2, 2
3. 8, 6
4. 6, 4

Q. The number of $\alpha$ and $\beta$-particles emitted during the transformation of ${}_{90}T{h}^{232}$ to ${}_{82}{P}^{208}$ are respectively

1. 4, 2
2. 2, 2
3. 8, 6
4. 6, 4

Q. Alkaline earth metal is radioactive. It and its daughter element decay by emitting 3 $\alpha$-particles in succession. In what group should the resulting element be formed?

1. 13
2. 14
3. 12
4. 10

Q. $\begin{array}{c}180\\ 72\end{array}X\stackrel{2\alpha }{\to }\stackrel{\beta }{\to }\stackrel{\gamma }{\to }\begin{array}{c}A\\ Z\end{array}{X}^{\prime }$.Z and A are

1. 69, 172
2. 172, 69
3. 180, 70
4. 182, 68

Q. If uranium (mass no. 238 and atomic no. 92) emits $\alpha$ -particle, the product has mass number and atomic number

1. 234, 90
2. 236, 92
3. 238, 90
4. 236, 90

Q. On bombarding ${}_7{N}^{14}$ with $\alpha$ -particles, the nuclei of the product formed after the release of a proton will be or In nuclear reaction ${}_7{N}^{14}{+}_{2}H{e}^4{\to }_z{X}^A{+}_1{H}^1$, the term ${}_z{X}^A$ represents

1. ${}_8{O}^{17}$
2. ${}_9{F}^{18}$
3. ${}_9{F}^{17}$
4. ${}_8{O}^{18}$

Q. The position of element $RaC$ in the periodic table is:
${}_{88}^{226}Ra{\stackrel{-\alpha }{\to }}_{86}Rn\stackrel{-\alpha }{\to }RaA\stackrel{-\beta }{\to }RaB\stackrel{-\alpha }{\to }RaC$

1. ${13}^{th}$ group and $6^{th}$ period
2. ${16}^{th}$ group and $3^{rd}$ period
3. ${15}^{th}$ group and $7^{th}$ period
4. ${15}^{th}$ group and $6^{th}$ period

Q. In the nuclear reaction ${}_{12}M{g}^{24}{+}_{2}H{e}^4{=}_0{n}^1+?$ The product nucleus is

1. ${}_{13}A{l}^{27}$
2. ${}_{14}S{i}^{27}$
3. ${}_{13}A{l}^{28}$
4. ${}_{12}M{g}^{25}$

Q. $\begin{array}{c}180\\ 72\end{array}X\stackrel{2\alpha }{\to }\stackrel{\beta }{\to }\stackrel{\gamma }{\to }\begin{array}{c}A\\ Z\end{array}{X}^{\prime }$.Z and A are

1. 69, 172
2. 172, 69
3. 180, 70
4. 182, 68

Q. The number of alpha and $\beta$ particles emitted when ${}_{92}^{238}U$ is finally converted into ${}_{82}^{206}Pb$ is:

1. 2, 1
2. 4, 2
3. 8, 6
4. 6, 4

Q. The number of alpha and $\beta$ particles emitted when ${}_{92}^{238}U$ is finally converted into ${}_{82}^{206}Pb$ is:

1. 2, 1
2. 4, 2
3. 8, 6
4. 6, 4

Q. Deuterons when bombarded on a nuclide produce ${}_{18}A{r}^{38}$ and neutrons. The target is

1. ${}_{17}C{l}^{35}$
2. ${}_{19}{K}^{27}$
3. ${}_{17}C{l}^{37}$
4. ${}_{19}{K}^{39}$

Q. Which of the following particle is emitted in the reaction ${}_{13}A{l}^{27}{+}_{2}H{e}^4{\to }_{14}{P}^{30}+$....

1. ${}_0{n}^1$
2. ${}_{-1}{e}^0$
3. ${}_1{H}^1$
4. ${}_1{H}^2$

Q. Which one of the following nuclear reaction is correct

1. ${}_6{C}^{13}{+}_1{H}^1{\to }_7{N}^{13}+{\beta }^{-}+v^{-}$
2. ${}_{11}N{a}^{23}{+}_1{H}^1{\to }_{10}N{e}^{20}{+}_{2}H{e}^4$
3. ${}_{13}A{l}^{23}{+}_0{n}^1{\to }_{11}N{a}^{23}+e^0$
4. None of these

Q. How many neutrons are present in the nucleus of Ra

1. 88
2. 226
3. 140
4. 138

Q. Which of the following particle is emitted in the reaction ${}_{13}A{l}^{27}{+}_{2}H{e}^4{\to }_{14}{P}^{30}+$....

1. ${}_0{n}^1$
2. ${}_{-1}{e}^0$
3. ${}_1{H}^1$
4. ${}_1{H}^2$

Q. Which of the following particle is emitted in the reaction ${}_{13}A{l}^{27}{+}_{2}H{e}^4{\to }_{14}{P}^{30}+$....

1. ${}_0{n}^1$
2. ${}_{-1}{e}^0$
3. ${}_1{H}^1$
4. ${}_1{H}^2$