EASY
9th CBSE
IMPORTANT
Earn 100

Define proton.

Important Questions on Structure of the Atom

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 12
State the mass and charge of proton.
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 13

Name the scientist who discovered the existence of protons in atoms.

HARD
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 14

In Rutherford's scattering experiment, some but very few alpha particles are deflected back. What does it signify?

MEDIUM
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 15

In Rutherford's scattering experiment, most of the alpha particles pass through the gold foil without undergoing any deflection. What does it signify?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 16

Which observation of the scattering experiment proves that most of the space in the atom is empty?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 17
Which sub-atomic particle was not present in Thomson's model of the atom?
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 18
Name the particles used by Rutherford in his experiment on the discovery of the nucleus.
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 19

Who discovered the nucleus of atom ?