HARD
9th CBSE
IMPORTANT
Earn 100

State and explain Kepler's laws of planetary motion. Draw diagrams to illustrate these laws.

Important Questions on Model Test Paper (As per The Latest Marking Scheme)

MEDIUM
9th CBSE
IMPORTANT
Explain general characteristics of phylum Platyhelminthes and Nematoda. Give two examples of each.
HARD
9th CBSE
IMPORTANT
If 16g of oxygen contains 1mole of oxygen atoms, calculate the mass of one atom of oxygen.
MEDIUM
9th CBSE
IMPORTANT

All the gases form cathode rays and anode rays when electricity is passed through them: What does the formation of cathode rays tell us about the atoms?

MEDIUM
9th CBSE
IMPORTANT

All the gases form cathode rays and anode rays when electricity is passed through them: What does the formation of anode rays tell us about the atoms?

MEDIUM
9th CBSE
IMPORTANT
In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m. How much work is done by him in lifting one box?(g = 10 ms2)