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Board Paper of Class 10 2016 Maths (SET 1) - Solutions

General Instructions :
(i) All questions are compulsory.
(ii) The question paper consists of 31 questions divided into four sections – A, B, C and D.
(iii) Section A contains 4 questions of 1 mark each, Section B contains 6 questions of 2 marks each, Section C contains 10 questions of 3 marks each and Section D contains 11 questions of 4 marks each.
(iv) Use of calculated is not permitted.

  • Question 1
    In Fig. 1, AOB is a diameter of a circle with centre O and AC is a tangent to the circle at A. If ∠BOC = 130°, the find ∠ACO.


  • Question 2
    An observer, 1.7 m tall, is 203 m away from a tower. The angle of elevation from the of observer to the top of tower is 30°. Find the height of tower. VIEW SOLUTION

  • Question 3
    For what value of k will the consecutive terms 2k + 1, 3k + 3 and 5k − 1 form an AP? VIEW SOLUTION

  • Question 4
    20 tickets, on which numbers 1 to 20 are written, are mixed thoroughly and then a ticket is drawn at random out of them. Find the probability that the number on the drawn ticket is a multiple of 3 or 7. VIEW SOLUTION

  • Question 5
    A two digit number is four times the sum of the digits. It is also equal to 3 times the product of digits. Find the number. VIEW SOLUTION

  • Question 6
    Find the ratio in which the point (−3, k) divides the line-segment joining the points (−5, −4) and (−2, 3). Also find the value of k. VIEW SOLUTION

  • Question 7
    In Fig. 2, from a point P, two tangents PT and PS are drawn to a circle with centre O such that ∠SPT = 120°, Prove that OP = 2PS.


  • Question 8
    Prove that the points (2, −2), (−2, 1) and (5, 2) are the vertices of a right angled triangle. Also find the area of this triangle. VIEW SOLUTION

  • Question 9
    If the ratio of sum of the first m and n terms of an AP is m2 : n2, show that the ratio of its  mth and nth terms is (2m − 1) : (2n − 1). VIEW SOLUTION

  • Question 10
    In fig. 3 are two concentric circles of radii 6 cm and 4 cm with centre O. If AP is a tangent to the larger circle and BP to the smaller circle and length of AP is 8 cm, find the length of BP.


  • Question 11
    Find the area of shaded region in Fig. 4, where a circle of radius 6 cm has been drawn with vertex O of an equilateral triangle OAB of side 12 cm. (Use π = 3.14 and 3 =1.73)


  • Question 12
    A hemispherical tank, of diameter 3 m, is full of water. It is being emptied by a pipe at the rate of 347 litre per second. How much time will it take to make the tank half empty? Use π=227 VIEW SOLUTION

  • Question 13
    If the point C (–1, 2) divides internally the line-segment joining the points A (2, 5) and B (x, y) in the ratio 3 : 4, find the value of x2 + y2. VIEW SOLUTION

  • Question 14
    In fig. 5 is a chord AB of a circle, with centre O and radius 10 cm, that subtends a right angle at the centre of the circle. Find the area of the minor segment AQBP. Hence find the area of major segment ALBQA. (use π = 3.14)


  • Question 15
    Divide 56 in four parts in AP such that the ratio of the product of their extremes (1st and 4th) to the product of means (2nd and 3rd) is 5 : 6. VIEW SOLUTION

  • Question 16
    Solve the given quadratic equation for x : 9x2 – 9(a + b)x + (2a2 + 5ab + 2b2) = 0. VIEW SOLUTION

  • Question 17
    A cylindrical tub, whose diameter  is 12 cm and height 15 cm is full of ice-cream. The whole ice-cream is to be divided into 10 children in equal ice-cream cones, with conical base surmounted by hemispherical top. If the height of conical portion is twice the diameter of base, find the diameter of conical part of ice-cream cone. VIEW SOLUTION

  • Question 18
    A metal container, open from the top, is in the shape of a frustum of a cone of height 21 cm with radii of its lower and upper circular ends as 8 cm and 20 cm respectively. Find the cost of milk which can completely fill the container at the rate of Rs 35 per litre. Use π=227 VIEW SOLUTION

  • Question 19
    Two men on either side of a 75 m high building and in line with base of building observe the angles of elevation of the top of the building as 30° and 60°. Find the distance between the two men. (Use 3=1.73) VIEW SOLUTION

  • Question 20
    A game consist of tossing a one-rupee coin 3 times and noting the outcome each time. Ramesh will win the game if all the tosses show the same result, (i.e. either all thee heads or all three tails) and loses the game otherwise. Find the probability that Ramesh will lose the game. VIEW SOLUTION

  • Question 21
    A pole has to be erected at a point on the boundary of a circular park of diameter 17 m in such a way that the differences of its distances from two diametrically opposite fixed gates A and B on the boundary is 7 metres. Find the distances from the two gates where the pole is to be erected. VIEW SOLUTION

  • Question 22
    Prove that the lengths of tangents drawn from an external point to a circle are equal. VIEW SOLUTION

  • Question 23
    Draw a ∆ABC in which AB = 4 cm, BC = 5 cm and AC = 6 cm. Then construct another triangle whose sides are 35 of the corresponding sides of ∆ABC. VIEW SOLUTION

  • Question 24
    In fig. 6, AB is a chord of a circle, with centre O, such that AB = 16 cm and radius of circle is 10 cm. Tangents at A and B intersect each other at P. Find the length of PA.


  • Question 25
    Find the positive value(s) of k for which quadratic equations x2 + kx + 64 = 0 and x2 – 8x + k = 0 both will have real roots. VIEW SOLUTION

  • Question 26
    A vertical tower stands on a horizontal plane and is surmounted by a flagstaff of height 5 m. From a point on the ground the angles of elevation of the top and bottom of the flagstaff are 60° and 30° respectively. Find the height of the tower and the distance of the point from the tower. (take 3 = 1.732) VIEW SOLUTION

  • Question 27
    Reshma wanted to save at least Rs 6,500 for sending her daughter to school next year (after 12 month.) She saved Rs 450 in the first month and raised her savings by Rs 20 every next month. How much will she be able to save in next 12 months? Will she be able to send her daughter to the school next year?
    What value is reflected in this question. VIEW SOLUTION

  • Question 28
    The co-ordinates of the points A, B and C are (6, 3), (−3, 5) and (4, −2) respectively. P(x, y) is any point in the plane. Show that arPBCarABC=x+y-27 VIEW SOLUTION

  • Question 29
    In the given figure a disc is shown on which a player spins an arrow twice. The fraction ab is formed, where 'a' is the number of sector on which arrow stops on the first spin and 'b' is the number of the sector in which the arrow stops on second spin. On each spin, each sector has equal chance of selection by the arrow. Find the probability that the fraction ab>1.


  • Question 30
    Find the area of the shaded region in Fig. 8, where APD, AQB, BRC and CSD are semi-circles of diameter 14 cm, 3.5 cm, 7 cm and 3.5 cm respectively. Use π=227

  • Question 31
    In fig. 9 is shown a right circular cone of height 30 cm. A small cone is cut off from the top by a plane parallel to the base. If the volume of the small cone is 127 of the volume of cone, find at what height above the base is the section made.

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