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CBSE->Std 9 Questions

Total Questions 1962
ARRANGE THE FOLLOWING SUBSTANCES IN THE INCRASING ORDER OF FORCE OF ATTRACTION BETWEEN THIER PARTICLES ; OXYGEN ,SALT ,MILK
gave me a labelled diagram of NEURON
EXPLAIN THE FOLLOWING BRIEFLY 1.gases expert pressure pressure on the walls of the container 2.water is liquid at room temperature 3.evaporation causes cooling
There were a mixture of mustard oil and water . name the process that can be used to obtain mustard oil the mustard oil from the above mixture . draw a well labelled diagram of the prcess.
SEEMA BUYS FEW GRAINS OF GOLD AT THE POLES AS PER THE INSTRUCTIONS OF ONE OF HER FRIENDS . SHE HANDS OVER THE SAME WHEN SHE MEETS HER AT THE EQUATOR . WILL THE FRIEND AGREE WITH WEIGHT OF GOLD BOUGHT .IF not WHY?
If the moon attracts the earth,why does the earth not move towards the moon
A car is moving with uniform velocity u and uniform acceleration a covers a distance s in time t draw its velocity time graph and derive an expression relating all given physical quantities.
How does the velocity of an object change during a free fall,derive the expression for 'g'when the object is near the surface of earth
Name any 2 fresh initiatives taken for increasing the water available for agriculture.
How bee keeping for making honey has become an agricultural enterprise?How is commercial honey produced?
Name and define the mechanism responsible for release of water on adding salt to the vegetables.
State method by which we can prepare colloid of starch.
If a bus is moving too the left[has a negative velocity],slows down,then comes to a stop.[a]what is the direction of its acceleration?[b]what is the sign of an acceleration that reduces the magnitude of a positive velocity?
Calculate the force required to impart to a car of velocity 30m/s in 10s stating from from rest mass is 1500kg.
Mallika's mother was suffering from cold and cough.Mallika prepared tea for her mother.She boiled water in a pan,then she added tea leaves,sugar and milk to it.She filtered the tea in a cup and served to her mother. Identify solute,solvent,residue and filtrate in this activity.
Differences and similarities between boiling and evaporation.
Differences between broilers and layers.
Three features of cardiac muscles.
What does a neuron look like?
Why would cells need oxygen?