Question # 1

Mass of neutron is

Choose an answer

1.67 x 10^-31kg

1.67 x 10^-27kg

9.1 x 10^-31kg

1.67 x 10^-19kg

The total charge of any nucleus is given as

Choose an answer

Ze²

Z²e

Z/e

Ze

Which are not the elementary particles?

Choose an answer

Photons

Leptons

Hadrons

Quarks

None of these

Structure of the nucleus was explained by

Choose an answer

J.J Thomson

Bohr

Millikan

Rutherford

Different radioactive material have

Choose an answer

same half lives

different half lives

same mean lives

same total lives

Alfa , beta and gamma rays are emitted from a radio-active substance

Choose an answer

spontaneously

when it is heated

when it is exposed to light

When it interacts with the other particle

Nucleus of a hydrogen atom may contain:

Choose an answer

One neutron only

Two protons and one neutron

Two protons and two neutrons

Aany of above

One proton only

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Choose an answer

A - Z

A + Z

Z

A

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Choose an answer

A - Z

A

Z

A + Z

The emission of radiations take place in elements, having charge number greater than

Choose an answer

109

82

69

52

Proton was discovered by Rutherford in

Choose an answer

1915

1906

1910

1920

In radio-active decay, the original element which disintegrate to another element is called

Choose an answer

element

daughter element

parent element

none of these

A particle having the mass of electron and charge of a proton is called a

Choose an answer

photon

position

antiproton

antineutrino

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Choose an answer

-4

4

2

1

Phenomenon of radioactivity is due to disintegration of

Choose an answer

nucleus

neutron

proton

molecule

Radiation detector are used to

Choose an answer

measure intensity of radiation

measure energy of radiation

difference between different types of radiation

all the above

A pair of quark and antiquark makes a:

Choose an answer

Meson

Baryon

Proton

Neutron

None of these

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 21 Nuclear Physics Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer