2009 8th class mathematics Annual examination 20092010 CBSE Question paper
Course: 

University/board: CBSE 
Choose the correct answer from the brackets: Question 1 (1 mark) Square root of 121 is [11,19,10] Question 2 (1 mark) 2/3 x2 by x is [2/3x,3x,2x] Question 3 (1 mark) The number of times a particular observation occurs is called its [Class interval ,frequency ,Mean] Question 4 (1 mark) Volume of a sphere is ....... [4/3^r3 ,2/3^r3,1/3^r2h] Question 5 (1 mark) Area of a circle [^r2,2^r,2^rh] Question 6 (1 mark) Value of ^ is [#.14,31.4,.314] Question 7 (1 mark) Square root 25/36 is [6/5,5/6,56] Question 8 (1 mark) A parallelogram with a pair of adjacent sides equal is called ........ [Rectangle ,Square ,Rhombus] Question 9 (1 mark) Exponential form of root 5 [(5)1/2, 95)1/3 ,(5)1/4] Question 10 (1 mark) the length around a circle or the perimeter of a circle is known as its [Circumference,Area,Surface area] Fill in the blanks Question 11 (1 mark) If n=m3,m=......... Question 12 (1 mark) (a+b)3=........ Question 13 (1 mark) Opposite angels of a cyclic quadrilateral are .............. Question 14 (1 mark) Area of a parallelogram .......... Question 15 (1 mark) the plane end of a right circular cone is ........... Question 16 (1 mark) Lateral surface Area of a hemisphere is .......... Question 17 (1 mark) Mean m= ......... Question 18 (1 mark) Slant height ,l= .......... Question 19 (1 mark) Volume of a circle =....... Match the following (5*2=10 marks) Question 20 x2+10x+9  28d Question 21 Vertically opposites angles  (x+1) (x+9) Question 22 Radius, r is  equal Question 23 The frequency corresponding to a class interval is  bisect each other Question 24 In a parallelogram , diagonals are  class frequency Answer the following Question 25 (5 marks) The thickness of a metallic tube is 1cm and its outer radius is 11cm .Find the mass of such a 1m long tube ,if the density of the metal is 7.5g per cm3. Question 26 (5 marks) Curved surface are of an icecream cone of slant height 12cm is 113.04 cm2.Find the base radius of the cone. Question 27 (4 marks) Find the value of (625/81)1/4 Question 28 (4 marks) List price of a scooter is Rs 35000. It is available at a discount of 8%. Find the selling price of scooter ? Question 29 (5 marks) Find the cube root of 9261/42875 Question 30 (4 marks) Find the difference between the compound interest and simple interest on Rs 32000 at 12% per annum for 3 years ? Question 31 (4 marks) One number is 3 times another number if 15 is added to both the number then one of the new number becomes twice that of the other new number .F ind the number . Question 32 (4 marks) The ratio of two sides of a parallelogram is 3:5 and its perimeter is 48cm . f ind the sides of the parallelogram. Question 33 (4 marks) Construct a quadrilateral ABCD in which Ab=4.5cm,BC=4cm,CD=6.5cm,DA= 3cm and BD=6.5cm. Question 34 (3 marks) Factorise m2+4n2+25z24mn20nz+10mz Question 35 (5 marks) Two circles having the same centre have radii 350m and 490m . What is the difference in their circumference ? Question 36 (5 marks ) The radius of a hemispherical balloon increases from 7cm to 14cm as air is being pumped in to it . Find the ratio of surface areas of the balloon in the two cases Question 37 (7 1/2 marks) Weekly savings of 30 students of class 8 are 38,42,40,35,72,27,57,62,59,80,84,73,65,40,76,40,38,60,58,38,54,39,50,44,71,83,45,38,80 and 77. Construct a grouped frequency table with class intervals of equal width. Question 38 (7 1/2 marks) Construct a histogram the frequency distribution of weights of 40 persons of a locality is given below . Weights 4045 4550 5055 5560 6065 Frequency 4 12 13 6 5
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