Mashaal Masha
Mashaal Masha
 Oct 16, 2022
0

Loading ad...

Choose the correct options for the following questions.
Neutron was suggested to be in the nucleus by:
Difficulty: Easy
Bookmark
A:
Rutherford in 1920
B:
Bohr in 1913
C:
Dirac in 1928
D:
Anderson in 1932
Neutron was discovered by:
Difficulty: Easy
Bookmark
A:
Rutherford in 1920
B:
Chadwick in 1932
C:
Bohr in 1913
D:
Compton in 1927

Loading ad...

The ratio of the radii of an atom and its nucleus is roughly equal to:
Difficulty: Easy
Bookmark
A:
$10^{5} cm$
B:
$10^{5}$
C:
$10^{5} m$
D:
$10^{-5} m$
Nucleus means:
Difficulty: Easy
Bookmark
A:
Only electrons
B:
Only neutrons
C:
Only protons
D:
Both b and c
Charge and mass of a proton are respectively:
Difficulty: Easy
Bookmark
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:
$9.1 \times 10^{-31} kg, 1.67 \times 10^{-27} coul$

Loading ad...

Mass of neutron is exactly:
Difficulty: Easy
Bookmark
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
Bookmark
A:
1.007276u
B:
1.008665u
C:
0.00055u
D:
0.000055u
Unified mass scale means that atomic mass is expressed in:
Difficulty: Easy
Bookmark
A:
Kg
B:
Gram
C:
Atomic mass unit
D:
None

Loading ad...

The figure 1.007276u shows the mass of an:
Difficulty: Easy
Bookmark
A:
Atom
B:
Positron
C:
Electron
D:
Proton
In a neutral atom, the number of protons are always:
Difficulty: Easy
Bookmark
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

Go Premium with just USD 11.989,999,999,999,998/month!