MEDIUM
9th CBSE
IMPORTANT
Earn 100
Draw a graph for a wave representing wave disturbance and time for a sound changing from low pitch to high pitch, keeping the amplitude of the sound same.
Important Questions on Sample Question Paper
EASY
9th CBSE
IMPORTANT
Lichens are called pioneer colonisers of bare rock. How can they help in formation of soil?
EASY
9th CBSE
IMPORTANT
What is a GM crop? Name any one such crop which is grown in India.
MEDIUM
9th CBSE
IMPORTANT
If there is low rainfall in a village throughout the year what measures will you suggest to the farmers for better cropping?
MEDIUM
9th CBSE
IMPORTANT
In agricultural practices, higher input gives higher yield. Discuss how?
HARD
9th CBSE
IMPORTANT
The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth ().Which one of the two is heavier and by how many times?
MEDIUM
9th CBSE
IMPORTANT
In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula . How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be .
MEDIUM
9th CBSE
IMPORTANT
Explain giving reasons
A balanced diet is necessary for maintaining a healthy body.
MEDIUM
9th CBSE
IMPORTANT
Explain giving reasons
Health of an organism depends upon the surrounding environmental conditions.
