Nuclear Physics Additional One Mark Online Test

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

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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

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

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.\(3.7 x 10^4\)

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

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

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

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

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

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

Q10

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

Q11

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

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

Q12

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 \(10^11 K\)

Q13

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)

Q14

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

Q15

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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