HARD
9th CBSE
IMPORTANT
Earn 100

Describe an activity to prove that particles of matter are continuously moving.

Important Questions on Practice Paper 1

MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 22
State difference between homogeneous and heterogeneous mixture. Give one example of each.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 22
How will you separate sugar and salt ?
HARD
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 22
Why crystallisation is better than evaporation ?
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 22
Define Tyndall Effect.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 22
Why is water considered a compound? Mention two points.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 23
Why is petroleum refined by fractional distillation ?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 23
How are physical changes different from chemical changes? Give one example of each.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 23
What is meant by emulsion? Give one example.