Define amplitude and give its SI unit.

Important Questions on Practice Paper 1

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 34

How is frequency of wave related to its time period ?

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 35

State two factors responsible for weathering of rocks.

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 35

Why is the biosphere called the largest ecological system ?

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 35

Name a pollution free source of energy.

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 36

Why is mitochondria called 'power-house' of cell? Give the similarities and one difference between mitochondria and plastid.

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 16 - Practice Paper 1>1; PRACTICE PAPER>Q 36

What are the main functional regions of a cell? Explain with the help of a diagram.