Deck 24: Radiation and Nuclear Science Basics

Question 1

In β + decay, the nucleon number is

A)conserved
B)not conserved
C)unstable
D)stable

Answer 1

conserved

Question 2

Particles that are un affected by strong nuclear force are

A)protons
B)leptons
C)neutrons
D)bosons

Answer 2

leptons

Question 3

Number of isotopes neon has is

A)2
B)4
C)3
D)5

Answer 3

3

Question 4

Phenomena of radioactivity was discovered by Henri Becquerel in

A)1896
B)1895
C)1894
D)1893

Question 5

Radiations emitted by radioactive substances is

A)alpha
B)beta
C)gamma
D)all of above

Question 6

Elements undergo radioactive decay when proton number becomes greater than

A)50
B)40
C)83
D)73

Question 7

Process in which α and β rays pass close to atoms and knock electrons out is called

A)atomization
B)ionization
C)decay
D)hydroxylation

Question 8

Alpha particles have relatively

A)low kinetic energies
B)high potential energy
C)high mechanical energy
D)high kinetic energy

Question 9

Strongest ionizing radiation is

A)Alpha
B)beta
C)gamma
D)x-rays

Question 10

The nucleon number consists of

A)Number of electrons
B)Number of protons
C)Number of electrons and protons
D)Number of protons and neutrons

Question 11

Gamma radiation is emitted in order to

A)excite the atom
B)release excess energy from atom
C)destabilize the atom
D)stabilize the atom

Question 12

Electrons move around nucleus in form of

A)clouds
B)dust particles
C)steam
D)charge

Question 13

Particles like kaons and muons etc, were found out by

A)looking at cosmic rays
B)looking at particles in accelerators
C)looking closely at atom
D)both A and B

Question 14

Type of rays that affect the nucleus are

A)alpha
B)beta
C)gamma
D)EM

Question 15

Force that acts on both quarks and leptons is

A)strong nuclear force
B)weak interaction
C)intermediate interaction
D)nuclear force

Question 16

Particles that experience strong force are

A)leptons
B)hadrons
C)both A and B
D)softons

Question 17

Heavy nuclei have

A)more protons than neutrons
B)more electrons than neutrons
C)more neutrons than electrons
D)more neutrons than protons

Question 18

A decay in which a proton decays in to neutron and an electron neutrino is

A)β+ decay
B)β-
C)γ decay
D)α decay

Question 19

Photon of electromagnetic radiation is

A)α ray
B)β ray
C)γ ray
D)x-ray

Question 20

Mass of alpha particle is

A)50 times the mass of electron
B)100 times the mass of electron
C)500 times the mass of electron
D)1000 times the mass of electron

Question 21

Particle which explains about mass of matter is called

A)Higgs boson
B)protons
C)leptons
D)neutrons

Question 22

Plum pudding model describes atom as

A)negative pudding with positive plums
B)negative pudding
C)positive pudding with negative plums
D)positive pudding only

Question 23

Lepton among them are

A)electrons
B)neutrinos
C)protons
D)both A and B

Question 24

Density of proton is equal to density of

A)electron
B)atom
C)neutron
D)neutrino