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1
AP EAPCET 2021 - 20th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following nuclear reactions is possible?

A
$${ }_5 \mathrm{~B}^{10}+{ }_2 \mathrm{He}^4 \longrightarrow{ }_7 \mathrm{~N}^{13}+{ }_1 \mathrm{H}^1$$
B
$${ }_{11} \mathrm{Na}^{24}+{ }_1 \mathrm{H}^1 \longrightarrow{ }_{10} \mathrm{Ne}^{20}+{ }_2 \mathrm{He}^4$$
C
$${ }_{93} \mathrm{~Np}^{239} \longrightarrow{ }_{94} \mathrm{Pu}^{239}+\beta^{-}+\gamma^{-}$$
D
$${ }_7 \mathrm{~N}^{11}+{ }_1 \mathrm{H}^1 \longrightarrow{ }_6 \mathrm{C}^{12}+\beta^{-}+\gamma^{-}$$
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

The angular momentum of the orbital electron is integral multiple of

A
$$h$$
B
$$2\pi h$$
C
$$\frac{h}{2\pi}$$
D
$$3\pi h$$
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following values is the correct order of nuclear density?

A
$$5 \times 10^5 \mathrm{~kgm}^{-3}$$
B
$$9 \times 10^{10} \mathrm{~kgm}^{-3}$$
C
$$3 \times 10^{21} \mathrm{~kgm}^{-3}$$
D
$$2 \times 10^{17} \mathrm{~kgm}^{-3}$$
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ionisation potential of hydrogen atom is 13.6 V. How much energy need to be supplied to ionise the hydrogen atom in the first excited state?

A
13.6 eV
B
27.2 eV
C
3.4 eV
D
6.8 eV
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