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CBSE->Std 10 Questions

Total Questions 2595
diagonals AC and BD of ABCD intersect at O in such a way that ar{AOD}=ar{BOC}.prove that ABCD is a trapezium.
GIVE A BRIEF SKETCH ON PALAMPUR?
HOW CAN WE FIND THE MEDIAN OF THE DATA WHOSE MEAN AND MODE ARE GIVEN BUT THE DATA ARE NOT GIVEN?
CAN YOU GIVE A SEMINAR REPORT ON THE TOPIC OXYGEN CYCLE?
The area between two concentric circles is 346.5 sq.cm, and the circumference of the inner circle is 88 cm. Calculate the radius of outer circle.
PQ is the chord of length 8 cm of a circle of radius 5 cm. The tangents at P and Q intersect at a point T. Find the length TP.
Solve for x: 2{2x+3/x-3} - 25{x-3/2x+3} = 5
A boy of height 1.7m is standing 30m away from a flagstaff on the samelevel ground. He observes that the angle of elevation of the top of the flagstaff is 30 degree. calculate the height of the flagstaff.
A right triangle whose sides are 3 cm and 4 cm (other than hypotenuse)is made to revolve about its hypotenuse. find the volume and surface area of the double cone so formed.
Find k if points A(k,2-2k) B(-k+1, 2k) C(-4-k,6-2k) are collinear
in one fortnight of a given month there was a rainfall of 10cm in a river valley.if the area of the valley is 97280kmsquare, show that the total rainfall was approximately equivalent to the normal water of three rivers each 1072km long ,75m wide and 3m deep.
WHAT ARE THE SIX ATOMIC THEORIES OF DALTON????????????
Prove that the line segment joining the points of contact of two parallel tangents passes through the centre.
What is Presbyopia?
What is Hypermetropia?
What is Myopia?
What is meant by Bio-magnification?
What is a Saponification reaction?
What is an Esterification reaction?
How many elements are there in the modern periodic table?