HARD
9th CBSE
IMPORTANT
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Write the difference between aqueous and Non-aqueous solution.

Important Questions on Periodic Tests

MEDIUM
9th CBSE
IMPORTANT

Why does solution of common salt in water not show Tyndall's effect whereas the mixture of water and milk shows?

MEDIUM
9th CBSE
IMPORTANT

Write the formula to find the magnitude of gravitational force between the earth and an object on the earth’s surface.

EASY
9th CBSE
IMPORTANT
Derive how does the value of gravitational force F Between two objects change when
(a) Distance between them is reduced to half and 
(b) Mass of an object is increased four times.
MEDIUM
9th CBSE
IMPORTANT
List two difference between thrust and pressure.
EASY
9th CBSE
IMPORTANT
What is meant by 1 Pascal and 1 Newton?
How will the pressure change, if area of contact is doubled?
EASY
9th CBSE
IMPORTANT
Which mathematical relation of the energy of a stone of mass m falling freely from height h remains conserved at every point in its downward motion?
EASY
9th CBSE
IMPORTANT
Which of the following statements is always correct?