Nuclear Physics One Mark Online Test

Nuclear Physics One Mark Online Test (10th Standard Science)

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 27 questions available.

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Man-made radioactivity is also known as _____________

A.Induced radioactivity B.Spontaneous radioactivity C.Artificial radioactivity D.a & c

Unit of radioactivity is _____________

A.roentgen B.curie C.becquerel D.all the above

Artificial radioactivity was discovered by ____________

A.Bequerel B.Irene Curie C.Roentgen D.Neils Bohr

In which of the following, no change in mass number of the daughter nuclei takes place? i) α decay ii) β decay iii) γ decay iv) neutron decay

A.(i) is correct B.(ii) and (iii) are correct C.(i) & (iv) are correct D.(ii) & (iv) are correct

____________ isotope is used for the treatment of cancer.

A.Radio Iodine B.Radio Cobalt C.Radio Carbon D.Radio Nickel

Gamma radiations are dangerous because

A.it affects eyes & bones B.it affects tissues C.it produces genetic disorder D.it produces enormous amount of heat

_____________ aprons are used to protect us from gamma radiations

A.Lead oxide B.Iron C.Lead D.Aluminium

Which of the following statements is/are correct? i. α particles are photons ii. Penetrating power of γ radiation is very low iii. Ionization power is maximum for α rays iv. Penetrating power of γ radiation is very high

A.(i) & (ii) are correct B.(ii) & (iii) are correct C.(iv) only correct D.(iii) & (iv) are correct

Proton - Proton chain reaction is an example of __________________

A.Nuclear fission B.α - decay C.Nuclear fusion D.β - decay

Q10

In the nuclear reaction 6 X12 α decay Z YA, the value of A & Z.

A.8, 6 B.8, 4 C.4, 8 D.cannot be determined with the given data

Q11

Kamini reactor is located at __________

A.Kalpakkam B.Koodankulam C.Mumbai D.Rajasthan

Q12

Which of the following is/are correct? i. Chain reaction takes place in a nuclear reactor and an atomic bomb. ii. The chain reaction in a nuclear reactor is controlled iii. The chain reaction in a nuclear reactor is not controlled iv. No chain reaction takes place in an atom bomb

A.(i) only correct B.(i) & (ii) are correct C.(iv) only correct D.(iii) & (iv) are correct

Q13

Who discovered artificial or man-made radioactivity in the year 1934?

A.Henri Becquerel B.Irene Curie and F. Joliot C.Marie Curie and Pierre Curie D.Ernest Rutherford

Q14

Which of the following elements has an atomic number less than 82 but undergoes spontaneous natural radioactivity?

A.Uranium B.Radium C.Promethium D.Polonium

Q15

One Rutherford (Rd) is defined as the quantity of a radioactive substance which produces how many disintegrations per second?

A.\(3.7 x 10^10\) B.\(10^6\) C.1 D.\(3.7 x 10^4\)

Q16

What is the charge of a beta particle as defined in nuclear physics?

A.Positive charge of +2e B.Negative charge of -e C.Neutral (zero charge) D.Positive charge of +e

Q17

According to Soddy and Fajan's displacement laws, what happens to the atomic number and mass number of a daughter nucleus formed during alpha decay?

A.Mass number decreases by 4, atomic number decreases by 2 B.Mass number decreases by 2, atomic number decreases by 4 C.Mass number remains same, atomic number increases by 1 D.Mass number increases by 4, atomic number increases by 2

Q18

In which type of radioactive decay does only the energy level of the nucleus change, while both the atomic number and mass number remain the same?

A.Alpha decay B.Beta decay C.Gamma decay D.Neutron decay

Q19

In 1939, which scientists discovered that a heavy uranium nucleus splits into smaller nuclei of comparable mass when bombarded with neutrons?

A.Henri Becquerel and Marie Curie B.Otto Hahn and F. Strassman C.Soddy and Fajan D.Irene Curie and F. Joliot

Q20

What is the average energy released in a single nuclear fission process of a uranium-235 nucleus?

A.About 200 MeV B.About 20 MeV C.About 2 MeV D.About 2000 MeV

Q21

What is the term used to describe radioactive elements that are not fissionable on their own but can be converted into fissionable materials?

A.Fissile materials B.Fertile materials C.Moderators D.Coolants

Q22

Which principle is utilized in the design of an atom bomb to create a massive explosion?

A.Controlled chain reaction B.Uncontrolled chain reaction C.Controlled nuclear fusion D.Spontaneous alpha decay

Q23

Which atomic bomb dropped during World War II utilized a plutonium core?

A.Little Boy B.Fat Man C.Kamini D.Apsara

Q24

What is the temperature range required to execute a nuclear fusion process, giving it the name thermonuclear reaction?

A.\(10^3\) to \(10^5 K\) B.\(10^5\) to \(10^7 K\) C.\(10^7\) to \(10^9 K\) D.\(10^9\) to \(10^11 K\)

Q25

Which of the following radioisotopes is used in medicine to diagnose and treat anemia?

A.Radio-phosphorous (P32) B.Radio-iron (Fe59) C.Radio-iodine (I131) D.Radio-cobalt (Co60)

Q26

Which materials are commonly used as moderators in a nuclear reactor to slow down fast neutrons?

A.Boron and Cadmium rods B.Uranium and Plutonium C.Graphite and Heavy water D.Liquid sodium and Helium

Q27

Who was the first chairman of the Indian Atomic Energy Commission, which was established in August 1948?

A.Dr. A.P.J. Abdul Kalam B.Dr. Homi Jahangir Bhabha C.Dr. Vikram Sarabhai D.Dr. Raja Ramanna

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About this Nuclear Physics test

This free online practice test covers Nuclear Physics from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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