Engineering :: Nuclear Engineering

@ : Home > Chemical Engineering > Nuclear Engineering

41.

The ratio of the specific charge e/m of a proton to that of an alpha particle is

A.	1:20	B.	1:40
C.	4:10	D.	2:10

42.

The ratio of the diameter of atom to that of nucleus is about 104 Considering the density of ordinary matter to be of the order of 1 gm/cm3 the density of the nuclear matter will be of the order of

A.	104 gm/cm3	B.	107 gm/cm3
C.	1012 gm/cm3	D.	1064 gm/cm3

43.

The ratio of the mass of an electron to the mass of a proton is

A.	1837	B.	1/1837
C.	183.7	D.	1/183.7

44.

The nucleus of any atom

A.	is positively charged	B.	is negatively charged
C.	has no charge

45.

The specific charge of a charged body in motion

A.	increases	B.	decreases
C.	remains constant	D.	increases for positively charged bodies and decreases for negatively charged bodies

46.

The atomic number of an element is

A.	the number of neutrons present in an atomic nucleus	B.	the number of protons present in an atomic nucleus
C.	the sum of the number of protons and neutrons present in an atomic nucleus	D.	the difference in the number of protons and neutrons present in an atomic nucleus

47.

The mass number of an element is equal to

A.	the number of protons in the nucleus	B.	the number of neutrons in the nucleus
C.	the number of protons and neutrons in the nucleus	D.	the difference in the number of protons and neutrons in the nucleus

48.

Which of the following properties of elements is a whole number?

A.	Atomic weight	B.	Atomic radius
C.	Atomic volume	D.	Atomic number

49.

The atomic number of an element corresponds to

A.	its atomic volume	B.	the number of electrons in its atom
C.	the number of neutrons in the nucleus of its atom	D.	its atomic weight

50.

The emission of an ?-particle causes the resultant nucleus to have

A.	less atomic weight and less atomic number	B.	less atomic weight and more atomic number
C.	more atomic weight and more atomic number	D.	more atomic weight and less atomic number