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CBSE->Std 9 Questions

Total Questions 1962
what is power? explain.
What are the differences between amphibians and reptiles ?
What are differences between the animals belonging to the Aves group and those in the Mammalia group?
What is vegetative bud?
What is the speed of electricity ?
what is mole?
What is global warming? How does it occur?
what is the function of nucleus?
WHY FROGS HAVE EXTERNAL FERTILIZATION? AND HOW DOES IT OCCUR?
What are the causes of ozone layer depletion?
what is commercial farming and scientific forestry?
Can the angles 110 degree 80 degree 70degree and 95 degree be the angles of a quadrilateral? why?
the suface area of a sphere of radius 5cm is 5 times curved surface area of a cone of radius 4cm find the height and volume of the cone
The diameter of a sphere is decreased by 25percentage by what percent does its curved surface area decreased?
A wooden bookshelf has external dimensions as follows: Height = 110 cm, Depth = 25 cm, Breadth = 85 cm (see the given figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per cm2 and the rate of painting is 10 paise per cm2, find the total expenses required for polishing and painting the surface of the bookshelf.
the volume of 2 spheres are in the ratio 64:27 find the ratio of the surface area
a semi circle sheet of metal of diameter 28cm is bend to form an open conical cup find the capacity of the cup
A solid cylinder has total surface area of 462 cmsquare. Its curved surface area is one third of its total surface area. Find the volume of the cylinder.
a cylinder,a cone and a sphere are of the same radius and same height find the ratio of there curved surface
A body of volume 50cm3 is completely immersed in water. What is the buoyant force on the body?