English Medium
Academic Year: 2023-2024
Date & Time: 11th March 2024, 10:30 am
Duration: 3h
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General Instructions:
Read the following instructions carefully and follow them :
- This question paper contains 38 questions. All questions are compulsory.
- This question paper is divided into five Sections - A, B, C, D and E.
- In Section A, Question numbers 1 to 18 are multiple choice questions (MCQs) and question numbers 19 and 20 are Assertion - Reason based questions of 1 mark each.
- In Section B, Question numbers 21 to 25 are very short answer (VSA) type questions, carrying 2 marks each.
- In Section C, Question numbers 26 to 31 are short answer (SA) type questions, carrying 3 marks each.
- In Section D, Question numbers 32 to 35 are long answer (LA) type questions carrying 5 marks each.
- In Section E, Question numbers 36 to 38 are case-study based integrated questions carrying 4 marks each. Internal choice is provided in 2 marks question in each case-study.
- There is no overall choice. However, an internal choice has been provided in 2 questions in Section B, 2 questions in Section C, 2 questions in Section D and 3 questions of 2 marks in Section E.
- Draw neat diagrams wherever required. Take `pi = 22/7` wherever required, if not stated.
- Use of calculators is NOT allowed.
If the sum of zeroes of the polynomial `p(x) = 2x^2 - ksqrt2x + 1 "is" sqrt2` then value of k is ______.
`sqrt2`
2
`2sqrt2`
`1/2`
Chapter:
If the probability of a player winning a game is 0.79, then the probability of his losing the same game is ______.
1.79
0.31
0.21%
0.21
Chapter:
If the roots of equation ax2 + bx + c = 0, a ≠ 0 are real and equal, then which of the following relation is true?
`a = b^2/c`
b2 = ac
`ac = b^2/4`
`c = b^2/a`
Chapter:
In an A.P., if the first term a = 7, nth term an = 84 and the sum of first n terms `s_n = 2093/2`, then n is equal to ______.
22
24
23
26
Chapter:
If two positive integers p and q can be expressed as p = 18 a2b4 and q = 20 a3b2, where a and b are prime numbers, then LCM (p, q) is ______.
2 a2b2
180 a2b2
12 a2b2
180 a3b4
Chapter:
AD is a median of ΔABC with vertices A (5, -6), B (6, 4) and C (0, 0). Length AD is equal to ______.
`sqrt68` units
`2sqrt15` units
`sqrt101` units
10 units
Chapter:
If sec θ - tan θ = m, then the value of sec θ + tan θ is ______.
`1 - 1/m`
`m^2 - 1`
`1/m`
-m
Chapter:
From the data 1, 4, 7, 9, 16, 21, 25, if all the even numbers are removed, then the probability of getting at random a prime number from the remaining is ______.
`2/5`
`1/5`
`1/7`
`2/7`
Chapter:
For some data x1, x2, ..... xn with respective frequencies f1, f2, .... fn, the value of `sum_1^nf_i(x_i - barx)` is equal to ______.
`nbarx`
1
`sumf_i`
0
Chapter:
The zeroes of a polynomial x2 + px + q are twice the zeroes of the polynomial 4x2 - 5x - 6. The value of p is ______.
`-5/2`
`5/2`
-5
10
Chapter:
If the distance between the points (3, −5) and (x, −5) is 15 units, then the values of x are ______.
12, −18
−12, 18
18, 5
−9, −12
Chapter:
If cos(α + β) = 0, then value of `cos((alpha + beta)/2)` is equal to ______.
`1/sqrt2`
`1/2`
0
`sqrt2`
Chapter:
A solid sphere is cut into two hemispheres. The ratio of the surface areas of sphere to that of two hemispheres taken together, is ______.
1 : 1
1 : 4
2 : 3
3 : 2
Chapter:
The middle most observation of every data arranged in order is called ______.
mode
median
mean
deviation
Chapter:
The volume of the largest right circular cone that can be carved out from a solid cube of edge 2 cm is ______.
`(4pi)/3` cu cm
`(5pi)/3` cu cm
`(8pi)/3` cu cm
`(2pi)/3` cu cm
Chapter:
Two dice are rolled together. The probability of getting sum of numbers on the two dice as 2, 3 or 5, is ______.
`7/36`
`11/36`
`5/36`
`4/9`
Chapter:
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The centre of a circle is at (2, 0). If one end of a diameter is at (6, 0), then the other end is at ______.
(0, 0)
(4, 0)
(−2, 0)
(−6, 0)
Chapter:
In the given figure, graphs of two linear equations are shown. The pair of these linear equations is ______.
consistent with unique solution.
consistent with infinitely many solutions.
inconsistent.
inconsistent but can be made consistent by extending these lines.
Chapter:
Assertion (A): The tangents drawn at the end points of a diameter of a circle, are parallel.
Reason (R): Diameter of a circle is the longest chord.
Both, Assertion (A) and Reason (R) are true and Reason (R) is correct explanation of Assertion (A).
Both, Assertion (A) and Reason (R) are true but Reason (R) is not correct explanation for Assertion (A).
Assertion (A) is true but Reason (R) is false.
Assertion (A) is false but Reason (R) is true.
Chapter:
Assertion (A): If the graph of a polynomial touches x-axis at only one point, then the polynomial cannot be a quadratic polynomial.
Reason (R): A polynomial of degree n(n >1) can have at most n zeroes.
Both, Assertion (A) and Reason (R) are true and Reason (R) is correct explanation of Assertion (A).
Both, Assertion (A) and Reason (R) are true but Reason (R) is not correct explanation for Assertion (A).
Assertion (A) is true but Reason (R) is false.
Assertion (A) is false but Reason (R) is true.
Chapter:
Solve the following system of linear equations 7x − 2y = 5 and 8x + 7y = 15 and verify your answer.
Chapter:
In a pack of 52 playing cards one card is lost. From the remaining cards, a card is drawn at random. Find the probability that the drawn card is queen of heart, if the lost card is a black card.
Chapter:
Evaluate:
`2 sqrt2 cos 45^circ sin 30^circ + 2 sqrt3 cos 30^circ`
Chapter:
If A = 60° and B = 30°, verify that: sin (A + B) = sin A cos B + cos A sin B.
Chapter:
In the given figure, ABCD is a quadrilateral. Diagonal BD bisects ∠B and ∠D both.
Prove that:
- ΔABD ~ ΔCBD
- AB = BC
Chapter:
Prove that `5 - 2sqrt3` is an irrational number. It is given that `sqrt3` is an irrational number.
Chapter:
Show that the number 5 × 11 × 17 + 3 × 11 is a composite number.
Chapter:
Find the ratio in which the point `(8/5, y)` divides the line segment joining the points (1, 2) and (2, 3). Also, find the value of y.
Chapter:
ABCD is a rectangle formed by the points A (−1,−1), B (−1, 6), C (3, 6) and D (3, −1). P, Q, R and S are midpoints of sides AB, BC, CD and DA respectively. Show that diagonals of the quadrilateral PQRS bisect each other.
Chapter:
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In a teachers' workshop, the number of teachers teaching French, Hindi and English are 48, 80 and 144 respectively. Find the minimum number of rooms required if in each room the same number of teachers are seated and all of them are of the same subject.
Chapter:
Prove that:
`tan theta/(1 - cot theta) + cot theta/(1 - tan theta)` = 1 + sec θ cosec θ
Chapter:
Three years ago, Rashmi was thrice as old as Nazma. Ten years later, Rashmi will be twice as old as Nazma. How old are Rashmi and Nazma now?
Chapter:
In the given figure, AB is a diameter of the circle with centre O. AQ, BP and PQ are tangents to the circle. Prove that ∠POQ = 90°.
Chapter:
A circle with centre O and radius 8 cm is inscribed in a quadrilateral ABCD in which P, Q, R, S are the points of contact as shown. If AD is perpendicular to DC, BC = 30 cm and BS = 24 cm, then find the length DC.
Chapter:
The difference between the outer and inner radii of a hollow right circular cylinder of length 14 cm is 1 cm. If the volume of the metal used in making the cylinder is 176 cm3, find the outer and inner radii of the cylinder.
Chapter:
An arc of a circle of radius 21 cm subtends an angle of 60° at the centre Find:
- the length of the arc.
- the area of the minor segment of the circle made by the corresponding chord.
Chapter:
The sum of first and eighth terms of an A.P. is 32 and their product is 60. Find the first term and common difference of the A.P. Hence, also find the sum of its first 20 terms.
Chapter:
In an A.P. of 40 terms, the sum of first 9 terms is 153 and the sum of last 6 terms is 687. Determine the first term and common difference of A.P. Also, find the sum of all the terms of the AP.
Chapter:
Prove that, if a line is drawn parallel to one side of a triangle to intersect the other two sides, then the two sides are divided in the same ratio.
Chapter: [0.040999999999999995] Triangles [0.040999999999999995] Triangles [0.040999999999999995] Triangles
In the given figure PA, QB and RC are each perpendicular to AC. If AP = x, BQ = y and CR = z, then prove that `1/x + 1/z = 1/y`
Chapter:
A pole 6m high is fixed on the top of a tower. The angle of elevation of the top of the pole observed from a point P on the ground is 60° and the angle of depression of the point P from the top of the tower is 45°. Find the height of the tower and the distance of point P from the foot of the tower. (Use `sqrt3` = 1.73)
Chapter:
| A rectangular floor area can be completely tiled with 200 square tiles. If the side length of each tile is increased by 1 unit, it would take only 128 tiles to cover the floor. |
- Assuming the original length of each side of a tile be x units, make a quadratic equation from the above information. [1]
- Write the corresponding quadratic equation in standard form. [1]
-
- Find the value of x, the length of side of a tile by factorisation. [2]
OR - Solve the quadratic equation for x, using quadratic formula. [2]
- Find the value of x, the length of side of a tile by factorisation. [2]
Chapter:
|
BINGO is game of chance. The host has 75 balls numbered 1 through 75. Each player has a BINGO card with some numbers written on it. The participant cancels the number on the card when called out a number written on the ball selected at random. Whosoever cancels all the numbers on his/her card, says BINGO and wins the game.
The table given below, shows the data of one such game where 48 balls were used before Tara said 'BINGO'.
|
Based on the above information, answer the following:
- Write the median class. [1]
- When first ball was picked up, what was the probability of calling out an even number? [1]
-
- Find median of the given data. [2]
OR - Find mode of the given data. [2]
- Find median of the given data. [2]
Chapter:
|
A backyard is in the shape of a triangle ABC with right angle at B. AB = 7m and BC = 15 m. A circular pit was dug inside it such that it touches the walls AC, BC and AB at P, Q and R respectively such that AP = x m.
|
Based on the above information, answer the following questions:
- Find the length of AR in terms of x. [1]
- Write the type of quadrilateral BQOR. [1]
-
- Find the length PC in terms of x and hence find the value of x. [2]
OR - Find x and hence find the radius r of circle. [2]
- Find the length PC in terms of x and hence find the value of x. [2]
Chapter:
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