Atomic and Nuclear Physics:

The most interesting and important Subject Physics of 10th Class Chapter-18. Student want to know the important Questions and  physics notes for 10th class , to prepare it according to BISE Punjab. We are providing the Solution of Student Problems.

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Physics Ch#18, 10th Class

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1 / 56

The rate of radioactive decay is proportional to the number of __________

Unstable Nuclei Present

Proton Present

Stale Nuclei Present

Electrons Present

2 / 56

Release of energy by the sun is due to ________

Nuclear Fission

Burnings of Gases

Nuclear Fusion

Chemical Reaction

3 / 56

Nuclear fission was first observed in 1939 by__________

Otto Han and Curie

First and Curie

Otto Hahn and Frits Strassman

Otto Hahn and Rutherford

4 / 56

When Uranium (98 protons) ejects a beta particle, how many protons are let in the remaining nucleus?

91 Protons

92 Protons

93 Protons

89 Protons

5 / 56

Elements are naturally unstable having atomic number greater than_________

88

84

82

89

6 / 56

Atoms of the element which have same number of protons but different number of neutrons are__________

Isotopes

None of these

Nuclide

Both Isotopes & Nuclide

7 / 56

The half-life of C-14 is ______

5720 Years

5730 Years

5700 Years

5202 Years

8 / 56

Which among the following radiations has more penetrating power?

A Gamma Ray

A Beta Particle

An Alpha Particle

All Have the Same Penetrating Capability

9 / 56

Which have the greatest power of ionization s compared to others?

α-Particle

γ particles

β-Particles

X-Rays

10 / 56

Half-life of   (60-27)Co is _________

40 years

50 years

20 years

30 years

11 / 56

Which compound is used for diagnosis of brain tumor?

iodine-131

hydrogen-3

Neon-152

Phosphorus-32

12 / 56

A nucleon is _________ times heavier than electron.

1827

1841

1836

1832

13 / 56

The phenomenon by which radiations split matter into positive and negative ion is called ____

Deflection

Penetration

Ionization

Sublimation

14 / 56

When heavy nucleus splits into two lighter nuclei, the process would _____________

Release Chemical Energy

Absorb Nuclear Energy

Release Nuclear Energy

Absorb Chemical Energy

15 / 56

The mass of the proton and neutron is nearly equal to___________

• 1.67 x 10^-27 kg
• 1.67 x 10^-31 kg
• 1.67 x 10^-19kg
• 1.67 x 10^-21 kg

which Option is Correct ?

Option-3

Option-4

Option-1

Option-2

16 / 56

Radium-226 has a half-life of _____________

1620 years

1600 years

1820 years

1920 years

17 / 56

Tritium contains one proton, while protium and deuterium contains_________

No Proton

Two Protons

Three Protons

One Protons

18 / 56

Who accidentally discovered that uranium salt crystals emit an invisible radiation that can darken a photographic plate?

Marie Curie

Rutherford

Pierre

Becquerel

19 / 56

Which option is Correct

Option-1

Option-3

Option-2

Option-4

20 / 56

What happens to the atomic number of an element which emits 1 alpha particle?

Decreases By 1

Decreases By 2

Increases By 1

Stays the Same

21 / 56

Stream of high energy electrons_____________

α particles

β-Particles

∑-particles

γ-particles

22 / 56

In order to find the intensity of radiations, which device can be used?

Dosimeter

Both "Film Badge" & "Dosimeter"

Radiometer

Film Badge

23 / 56

Which are chemical compounds containing some quantity of radioisotope?

Radioactive Tracer

High Energy Compounds

Hard Compounds

Soft Compounds

24 / 56

The number of neutrons in a nucleus is represented by_______

N

None of these

A

Z

25 / 56

The temperature of the center of sun is _________

29 Million Kelvin

02 Million Kelvin

20 Million Kalvin

24 Million Kelvin

26 / 56

The total number of protons in a nucleus or total number of electrons in the orbits is __________

none of these

Atomic Number

Isotope number

Atomic mass number

27 / 56

When a tree dies, which radioactive isotope present in plant starts decaying?

C-14

I-131

P-32

Co-60

28 / 56

When two lights nuclei combine to form a heavier nucleus, this process is called_______

Disintegration

Bombardment

Nuclear Fission

Nuclear Fusion

29 / 56

One of the isotopes of uranium is U(238-92)  the number of neutrons in this isotope is ___________

330

92

146

238

30 / 56

____________ are collectively called nucleons.

Protons and Neutrons in Nucleus

Protons in nucleus

neutrons in nucleus

electrons in shell

31 / 56

8

10

3

6

32 / 56

The number of protons and neutrons in a nucleus or atomic mass is represented by______

None of these

N

A

Z

33 / 56

Transmutation is _____________

Both "Unstable nuclei changes into stale nuclei" & "Spontaneous process"

Unstable nuclei changes into stale nuclei

Spontaneous process

No spontaneous process

34 / 56

The total number of nucleons in a nucleus is__________

Atomic number

none of these

Isotope number

Atomic Mass Number

35 / 56

Half-life of plutonium (236 96 Pu) is 2.85 years and 242 94 Pu is _____________

• 3.79 x 10⁵ years
• 7.1 x 10⁸ years
• 2.85 years
• 7.1 x 10¹⁰ years

Which Option is Correct ?

Option-2

Option-4

Option-3

Option-1

36 / 56

Which compound readily accumulated in the thyroid gland and can be used for monitoring of thyroid functioning?

1-131

1-132

1-129

1-130

37 / 56

Stable nuclei have atomic number between__________

2-88

2-89

1-82

2-85

38 / 56

The atomic number is represented by_______

Z

None of these

N

A

39 / 56

Mass energy equation and theory of relativity was given by___________

Volta

Newton

Quantum

Einstein

40 / 56

Which Option is Correct ?

Option-2

Option-4

Option-1

Option-3

41 / 56

Rutherford discovered that the positive charge in an atom was concentrated in a small region called__________

Molecule

Shell

Nucleus

Atom

42 / 56

Isotopes are atoms of same element with different _______

Number of Electrons

Atomic Number

Atomic Mass

Number of Protons

43 / 56

The half life of a certain isotope is 1 day. What is the quantity of the isotope after 2 days?

None of these

One Eight

One Quarter

One half

44 / 56

Charge on alpha particles is ________

5e

3e

2e

4e

45 / 56

The stable argon nuclide Ar-40 half life___________

• 2.4 x 10⁸ years
• 2.69 x 10⁴ years
• 2.5 x 10⁹ years
• 2.4 x 10¹¹ years

Which Option is Correct ?

Option-4

Option-2

Option-1

Option-3

46 / 56

In which simplest atom, nucleus has only one proton?

Nitrogen

Hydrogen

Helium

Carbon

47 / 56

Which statement is correct about isotopes?

All of these

Atoms of an element have different number of neutrons in their nuclei

Atoms of an element have same number of protons.

Protium, deuterium and tritium are isotopes of hydrogen

48 / 56

During fission of 1kg of Uranium -235 energy released is ___________

• 67 x 10¹⁰J
• 65 x 10⁸J
• 60 x 10⁸J
• 66 x 10⁹J

Which Option is Correct ?

Option-1

Option-3

Option-2

Option-4

49 / 56

The earth and all living things receive radiation from outer space which name is __________

None of these

Cosmic Rays

X-Rays

Radon Gas

50 / 56

Isotopes of an element have the same____________

Chemical Properties

Atomic Number

Colors

Atomic Mass Number

51 / 56

Gamma rays are also called __________

Electrons

Photons

Positrons

Protons

52 / 56

The reason carbon dating works is that __________

When a plant or an animal die

There is so much non-radioactive carbon dioxide in the air

After plant of animal dies, it stops taking in fresh carbon-14

Plants and animals are such strong emitters of carbon-14

53 / 56

Hazards of radiation for humans are_____________

All Given

Blindness

Leukemia

Sterility

54 / 56

In each fission reaction energy released__________

299mV

200MeV

255meV

210meV

55 / 56

Which Radioactive isotope is used for curing cancerous tumors and cells?

C-14

Co-60

I-131

P-32

56 / 56

Penetrating power of γ rays as compared to α rays and β rays is __________

Smaller

Greater

Equal

Anyone of these

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The average score is 57%

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Chapter-18 – Atomic and Nuclear Physics

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