EASY
9th CBSE
IMPORTANT
Earn 100

Define electron.

Important Questions on Structure of the Atom

MEDIUM
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 7
What are the actual values of charge and mass of the electron ?
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 8

Name the scientist who discovered electron.

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

What are canal rays?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 10
Name the positively charged particle present in the atoms of all the elements.
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 11

Define proton.

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?