Matter /Particles /Atoms/Elements

Total Questions: 17

1 - An atom is made up of particles -----
A ) 2
B ) 3 ✅
C ) 4
D ) None of these

2 - James Chadwick discovered the neutron in ------
A ) 1928
B ) 1932 ✅
C ) 1940
D ) 1950

3 - A cation with n+1 charge has 10 electrons, how many protons does it contain?
A ) 10
B ) 11 ✅
C ) 12
D ) None of these

4 - The atomic number of Hydrogen is:
A ) 1 ✅
B ) 2
C ) 3
D ) 4

5 - How many Neutrons in Hydrogen?
A ) 0 ✅
B ) 1
C ) 2
D ) 3

6 - The volume of an atom is calculated by using ----?
A ) Atomic mass and density
B ) Atomic radius and formula for volume of a sphere ✅
C ) Atomic number and electron count
D ) Atomic charge and energy levels

7 - To make an uncharged object have a negative charge we must ------:
A ) Add some Electrons ✅
B ) Add some atoms
C ) Remove some protons
D ) None of 6

8 - Protons was discovered by ----:
A ) JJ Thomson
B ) Chadwick
C ) Goldstein ✅
D ) None of these

9 - Electron was discovered by ----:
A ) J J Thomson ✅
B ) J. C Bose
C ) James Watt
D ) Christopher Columns

10 - Which part of atom has a negative charge?
A ) Electron ✅
B ) Proton
C ) Neutron
D ) Nuclear

11 - James Chadwick received the Nobel Prize for ----?
A ) Discovering the Proton
B ) Discovering the Electron
C ) Discovering the Neutron ✅
D ) None of these
Explanation:

✅ James Chadwick received the Nobel Prize for: Discovery of the Neutron

📘 Explanation:-

  • ✅James Chadwick, a British physicist, discovered the neutron in 1932.
  • ✅ He was awarded the Nobel Prize in Physics in 1935 for this discovery.

Why it was important:

  • ✅ The discovery of the neutron helped in understanding the structure of the atomic nucleus.
  • ✅ It also played a key role in the development of nuclear energy and the atomic bomb.

12 - The uncharged particles in an atom is called -----?
A ) Neutron ✅
B ) Electron
C ) Proton
D ) Positron

13 - Isotopes are atoms of the same number of protons with a different number of:
A ) Protons
B ) Electrons
C ) Neutrons ✅
D ) Positron

14 - An element which is present in more than one physical form in nature -----:
A ) Pleiotropy
B ) Heterotrophy
C ) Allotropy ✅
D ) None of these

15 - The forth state of matter is ------:
A ) Solid
B ) Liquid
C ) Gas
D ) Plasma ✅

16 - Which one is most elestic among these?
A ) Iron
B ) Steel ✅
C ) Rubber
D ) Sponge

17 - A matter can exist in which of the following forms?
A ) Liquid
B ) Solid
C ) Gas
D ) All of these ✅
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