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CBSE Class 10 - Maths

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CBSE X - All India
MATHS PAPER 2014

Time allowed: 180 minutes; Maximum Marks: 90

 General Instructions: 1) All questions are compulsory. 2) The question paper consists of thirty questions divided into 4 sections A, B, C and D. Section A comprises of ten questions of 01 mark each, Section B comprises of five questions of 02 marks each, Section C comprises ten questions of 03 marks each and Section D comprises of five questions of 06 marks each. 3) All questions in Section A are to be answered in one word, one sentence or as per the exact requirement of the question. 4) There is no overall choice. However, internal choice has been provided in one question of 02 marks each, three questions of 03 marks each and two questions of 06 marks each. You have to attempt only one of the alternatives in all such questions. 5) In question on construction, drawing should be near and exactly as per the given measurements. 6) Use of calculators is not permitted.

SECTION A

Question 1

1. If the height of a vertical pole is $\sqrt{3}$times the length of its shadow on the ground, then the angle of elevation of the Sun at that time is ______.

Question 2

2. A bag contains cards numbered from 1 to 25. A card is drawn at random from the bag. The probability that the number on this card is divisible by both 2 and 3 is

Question 3

3. Two different coins are tossed simultaneously. The probability of getting at least one head is ____.

Question 4

4. Two concentric circles are of radii 5 cm and 3 cm. Length of the chord of the larger circle (in cm), which touches the smaller circle is _______.

Question 5

5. In figure, a quadrilateral ABCD is drawn to circumscribe a circle such that its sides AB, BC, CD and AD touch the circle at P, Q, R and S respectively. If AB = x cm, BC = 7 cm, CR = 3 cm and AS = 5 cm, find x.

Question 6

6. The perimeter of a triangle with vertices (0, 4), (0, 0) and (3, 0) is _______.

Question 7

7. A rectangular sheet of paper 40 cm × 22 cm, is rolled to form a hollow cylinder of height 40 cm. The radius of the cylinder (in cm) is _______.

Question 8

8. The next term of the A.P. $\sqrt{7},\sqrt{28},\sqrt{63},$√... is

SECTION B

Question 9

9. In figure , XP and XQ are two tangents to the circle with centre O, drawn from an external point X. ARB is another tangent, touching the circle at R. Prove that XA + AR = XB + BR.

Question 10

10. Prove that the tangents drawn at the ends of any diameter of a circle are parallel.

Question 11

11. Two different dice are rolled simultaneously. Find the probability that the sum of numbers appearing on the two dice is 10.

Question 12

12. In Figure , OABC is a quadrant of a circle of radius 7 cm. If OD = 4 cm, find the area of the shaded region. [Use π = $\frac{22}{7}$]

Question 13

13. Solve for x: $\sqrt{3}{x}^{2}$−2$\sqrt{2}$x−2$\sqrt{3}$ = 0.

Question 14

14. The sum of the first n terms of an AP is 5n − ${n}^{2}$. Find the ${n}^{\mathrm{th}}$term of this A.P.

SECTION C

Question 15

15. Points P, Q, R and S divide the line segment joining the points A (1, 2) and B (6, 7) in 5 equal parts. Find the coordinates of the points P, Q and R.

Question 16

16. In the figure, from a rectangular region ABCD with AB = 20 cm, a right triangle AED with AE = 9 cm and DE = 12 cm, is cut off. On the other end, taking BC as diameter, a semicircle is added on outside the region. Find the area of the shaded region.

[Use π = 3.14]

Question 17

17. In the figure, ABCD is a quadrant of a circle of radius 28 cm and a semi circle BEC is drawn with BC as diameter. Find the area of the shaded region. [Use π = $\frac{22}{7}$]

Question 18

18. A 5 m wide cloth is used to make a conical tent of base diameter 14 m and height 24 m. Find the cost of cloth used at the rate of Rs 25 per metre.

[Use π = $\frac{22}{7}$]

Question 19

19. A girl empties a cylindrical bucket, full of sand, of base radius 18 cm and height 32 cm, on the floor to form a conical heap of sand. If the height of this conical heap is 24 cm, then find its slant height correct up to one place of decimal.

Question 20

20. The sum of the first 7 terms of an A.P. is 63 and the sum of its next 7 terms is 161. Find the ${28}^{\mathrm{th}}$ term of this A.P.

Question 21

21. Two ships are approaching a light-house from opposite directions. The angles of depression of the two ships from the top of the light-house are 30° and 45°. If the distance between the two ships is 100 m, find the height of the light-house. [Use $\sqrt{3}$= 1.732]

Question 22

22. If 2 is a root of the quadratic equation 3${x}^{2}$+ px − 8 = 0 and the quadratic equation 4${x}^{2}$−2px + k = 0 has equal roots, find the value of k.

Question 23

23. Construct a triangle PQR, in which PQ = 6 cm, QR = 7 cm and PR = 8 cm. Then construct another triangle whose sides are $\frac{4}{5}$ times the corresponding sides of ∆PQR.

Question 24

24. Find the value(s) of p for which the points (p + 1, 2p − 2), (p −1, p) and (p − 3, 2p − 6) are collinear.

SECTION D

Question 25

25. The mid-point P of the line segment joining the points A (−10, 4) and B (−2, 0) lies on the line segment joining the points C (−9, −4) and D (−4, y). Find the ratio in which P divides CD. Also find the value of y.

Question 26

26. A quadrilateral is drawn to circumscribe a circle. Prove that the sums of opposite sides are equal.

Question 27

27. The angle of elevation of the top of a chimney from the foot of a tower is 60° and the angle of depression of the foot of the chimney from the top of the tower is 30°. If the height of the tower is 40 m, find the height of the chimney. According to pollution control norms, the minimum height of a smoke emitting chimney should be 100 m. State if the height of the above mentioned chimney meets the pollution norms. What value is discussed in this question?

Question 28

28. A hemispherical depression is cut out from one face of a cubical block of side 7 cm, such that the diameter of the hemisphere is equal to the edge of the cube. Find the surface area of the remaining solid. [Use π = $\frac{22}{7}$] .

Question 29

29. If ${S}_{n}$denotes the sum of the first n terms of an A.P., prove that${S}_{30}$ = 3 (${S}_{20}$${S}_{10}$).

Question 30

30. A metallic bucket, open at the top, of height 24 cm is in the form of the frustum of a cone, the radii of whose lower and upper circular ends are 7 cm and 14 cm respectively. Find

(i) the volume of water which can completely fill the bucket.

(ii) the area of the metal sheet used to make the bucket.

[Use π = $\frac{22}{7}$]

Question 31

31. The sum of the squares of two consecutive even numbers is 340. Find the numbers.

Question 32

32. Prove that the tangent at any point of a circle is perpendicular to the radius through the point of contact.

Question 33

33. A dice is rolled twice. Find the probability that

(i) 5 will not come up either time.

(ii) 5 will come up exactly one time.

Question 34

34. Solve for x:

3$\left(\frac{3x-1}{2x+3}\right)$−2 $\left(\frac{2x+3}{3x-1}\right)$ = 5; x≠$\frac{1}{3}$, −$\frac{3}{2}$.

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