Mashaal Masha
Mashaal Masha
 Oct 16, 2022
0
Choose the correct options for the following questions.
Neutron was suggested to be in the nucleus by:
Difficulty: Easy
A:
Rutherford in 1920
B:
Bohr in 1913
C:
Dirac in 1928
D:
Anderson in 1932
Neutron was discovered by:
Difficulty: Easy
A:
Rutherford in 1920
B:
Chadwick in 1932
C:
Bohr in 1913
D:
Compton in 1927
Sponsored AdsHide Ads
The ratio of the radii of an atom and its nucleus is roughly equal to:
Difficulty: Easy
A:
$10^{5} cm$
B:
$10^{5}$
C:
$10^{5} m$
D:
$10^{-5} m$
Nucleus means:
Difficulty: Easy
A:
Only electrons
B:
Only neutrons
C:
Only protons
D:
Both b and c
Charge and mass of a proton are respectively:
Difficulty: Easy
A:
zero, $1.673 \times 10^{-27}kg$
B:
$1.673 \times 10^{-27} coul, 1.6 \times 10^{-19} kg$
C:
$1.6 \times 10^{-19} coul, 1.673 \times 10^{-27} kg$
D:
$9.1 \times 10^{-31} kg, 1.67 \times 10^{-27} coul$
Sponsored AdsHide Ads
Mass of neutron is exactly:
Difficulty: Easy
A:
$1.675\times 10^{-27} kg$
B:
$9.1\times 10^{-31} kg$
C:
$1.675\times 10^{-19} kg$
D:
$1.6\times 10^{-19} kg$
In the unit of unified mass scales, the mass of an electron is:
Difficulty: Easy
A:
1.007276u
B:
1.008665u
C:
0.00055u
D:
0.000055u
Unified mass scale means that atomic mass is expressed in:
Difficulty: Easy
A:
Kg
B:
Gram
C:
Atomic mass unit
D:
None
Sponsored AdsHide Ads
The figure 1.007276u shows the mass of an:
Difficulty: Easy
A:
Atom
B:
Positron
C:
Electron
D:
Proton
In a neutral atom, the number of protons are always:
Difficulty: Easy
A:
Greater than number of neutrons
B:
Smaller than the number of electrons
C:
Equal to the number of neutrons
D:
Equal to the number of electrons

Top Your Class

Subscribe to the premium package and ace your exams using premium features

Go Premium Now
Go Premium
NUST Entry TestPhysicsNuclear Physics

Go Premium with just USD 24.99/month!