Nuclei Test

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Nuclei Test - 37

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Weekly Quiz Competition

Question 1
1 / -0

The difference between the sum of the masses of the constituent particles and the mass of an atom is called ___________.

A
Mass number

B
Mass defect

C
Binding energy

D
None of these

Solution

The difference between the sum of the masses of the constituent particles and the mass of an atom is called mass defect.
The energy released due to mass defect was given by Einstein
$$E=\triangle mc^2$$
Question 2
1 / -0

The radiant energy of the sun results from

A
Nuclear fusion

B
Nuclear fission

C
Cosmic radiation

D
Combustion

E
Explosion

Solution

$$ \begin{array}{l} \text { The radient energgy of is result of } \\ \text { nuclear fusion. The energy from both }\\ \text{heat and light originates from a nuclear fusion}\\ \therefore \text { (A) option is correct. } \end{array} $$
Question 3
1 / -0

$${ _{ 7 }{ { N }^{ 14 } }_{ } }$$ is bombarded with an $$\left(\alpha\right)$$ alfa particle to produce a proto and an unknown nucleus $$'X', $$
$${ _{ 7 }{ { N }^{ 14 } }_{ } } + \alpha$$ (particle) $$\longrightarrow X + p$$
Then $$'X'$$ stands for

A
$${ _{ 7 }{ { N }^{ 15 } }_{ } }$$

B
$${ _{ 8 }{ { N }^{ 14 } }_{ } }$$

C
$${ _{ 8 }{ { O }^{ 17 } }_{ } }$$

D
$${ _{ 8 }{ { O }^{ 16 } }_{ } }$$

Solution

The required reaction is
$${ _{ 7 }{ { N }^{ 14 } }_{ } }+{ _{ 2 }{ { He }^{ 4 } }_{ } }\longrightarrow { _{ 8 }{ { O }^{ 17 } }_{ } }+{ _{ 1 }{ { H }^{ 1 } }_{ } }$$
Question 4
1 / -0

What are the different isotopes formed when protons combine to form a $$_{2}{He}^{4}$$ nucleus ?

A
$$_{1}{H}^{1}$$, $$_{2}{He}^{3}$$

B
$$_{2}{He}^{3}$$, $$_{2}{He}^{3}$$

C
$$_{1}{H}^{1}$$, $$_{1}{He}^{1}$$

D
$$_{2}{H}^{3}$$, $$_{1}{H}^{2}$$

Solution

$$_1^1H$$ and $$_2^3He$$ combine to form $$_2He^4$$ nucleus.
$$_{ 2 }^{ 3 }{ He }+_{ 1 }^{ 1 }{ H }\rightarrow _{ 2 }{ He }^{ 4 }+E$$
Question 5
1 / -0

What is the mass defect and the binding energy of $$_{27}{Co}^{59}$$ which has a nucleus of mass of $$58.933 u$$ ? $$\left({m}_{p} = 1.0078 u, {m}_{n} = 1.0087 u \right)$$

A
517.914 MeV

B
617.914 MeV

C
17.914 MeV

D
717.914 MeV

Solution

In $$_{27}{Co}^{59}$$ number of protons $$= 27$$.
Number of neutrons $$= 59 - 27 = 32$$.
$$\therefore$$ The total mass of the nucleus $$= 27 \times 1.0078 u + 32 \times 1.0087 u = 27.2106 u + 32.2784 u = 59.489 u$$.
Given, the actual mass of the nucleus $$= 58.933 u$$.
$$\therefore$$ The mass defect $$= 59.489 u - 58.933 u = 0.556 u$$.
$$\therefore$$ The binding energy $$= \Delta m \times 931.5 MeV = 0.556 u \times 931.5 MeV = 517.914 MeV$$.
Question 6
1 / -0

Complete the following reaction.
$$_{13}{Al}^{27} + $$ __________ $$\rightarrow _{15}{P}^{30} + _{0}{n}^{1}$$

A
$$\alpha$$

B
$$\beta$$

C
$$\gamma$$

D
$$_{ 1 }^{ 1 }{ H }$$

Solution

$${ _{ 13 }{ Al }^{ 27 } }+{ _{ 2 }{ \alpha }^{ 4 } }\rightarrow { _{ 15 }{ P }^{ 30 } }+{ _{ 0 }{ n }^{ 1 } }$$
Atomic No. : 13+2=15+0
Mass No. : 27+4=30+1
So, $$\alpha$$ particle will be emitted.
Question 7
1 / -0

Which scientist proposed the concept of atomic mass?

A
Avogadro

B
Gay Lussac

C
Proust

D
Dalton

Solution

The concept of atomic mass was proposed by William Prout. Early atomic mass theory was proposed by the English chemist William Prout in a series of published papers in 1815 and 1816. Known as Prout's Law, Prout suggested that the known elements had atomic weights that were whole number multiples of the atomic mass of hydrogen.

Option C is correct.
Question 8
1 / -0

Chlorine has ______isotopes.

A
1 (one)

B
2 (two)

C
3 (three)

D
4 (four)

Solution

Chlorine has two isotopes $$_{17}^{35} Cl$$ and $$_{17}^{37} Cl$$ each isotope in its Nucleus has 17 protons.
Question 9
1 / -0

What is the atomic mass (u) of chlorine?

A
34

B
35.5

C
33

D
35

Solution

Chlorine is a chemical element with the symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them.

The atomic mass (u) of Chlorine is 35.5u.
Question 10
1 / -0

Carbon has __________ isotopes.

A
1 (one)

B
2 (two)

C
3 (three)

D
4 (four)

Solution

Carbon has three isotopes $$_6^{12} C, \ \ _6^{13} C \ \ and \ \ _6^{14} C$$

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Nuclei Test - 37

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Nuclei Test - 37

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SHARING IS CARING

Question 1

Mass number

Mass defect

Binding energy

None of these

Solution

Question 2

Nuclear fusion

Nuclear fission

Cosmic radiation

Combustion

Explosion

Solution

Question 3

$${ _{ 7 }{ { N }^{ 15 } }_{ } }$$

$${ _{ 8 }{ { N }^{ 14 } }_{ } }$$

$${ _{ 8 }{ { O }^{ 17 } }_{ } }$$

$${ _{ 8 }{ { O }^{ 16 } }_{ } }$$

Solution

Question 4

$$_{1}{H}^{1}$$, $$_{2}{He}^{3}$$

$$_{2}{He}^{3}$$, $$_{2}{He}^{3}$$

$$_{1}{H}^{1}$$, $$_{1}{He}^{1}$$

$$_{2}{H}^{3}$$, $$_{1}{H}^{2}$$

Solution

Question 5

517.914 MeV

617.914 MeV

17.914 MeV

717.914 MeV

Solution

Question 6

$$\alpha$$

$$\beta$$

$$\gamma$$

$$_{ 1 }^{ 1 }{ H }$$

Solution

Question 7

Avogadro

Gay Lussac

Proust

Dalton

Solution

Question 8

1 (one)

2 (two)

3 (three)

4 (four)

Solution

Question 9

34

35.5

33

35

Solution

Question 10

1 (one)

2 (two)

3 (three)

4 (four)

Solution

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