PUC II – TEXT BOOK MCQ’s 1. RELATIONS AND FUNCTIONS NCERT MCQS: 1. Let R be the relation in the set {1, 2, 3, 4} given by R = {(1, 2), (2, 2), (1, 1), (4,4),(1, 3), (3, 3), (3, 2)}. Choose the correct answer. (A) R is reflexive and symmetric but not transitive. (B) R is reflexive and transitive but not symmetric. (C) R is symmetric and transitive but not reflexive. (D) R is an equivalence relation. 2. Let R be the relation in the set N given by R = {(a, b) : a = b – 2, b > 6}. Choosethe correct answer. (A) (2, 4) ∈ R 3. 5. (C) (6, 8) ∈ R (D) (8, 7) ∈ R Let A = {1, 2, 3}. Then number of equivalence relations containing (1, 2) is (A) 1 4. (B) (3, 8) ∈ R (B) 2 (C) 3 (D) 4 Let f : R → R be defined as f(x) = x4. Choose the correct answer. (A) f is one-one onto (B) f is many-one onto (C) f is one-one but not onto (D) f is neither one-one nor onto. Let f : R → R be defined as f (x) = 3x. Choose the correct answer. (A) f is one-one onto (B) f is many-one onto (C) f is one-one but not onto (D) f is neither one-one nor onto. 1 6. If f : R → R be given by f (x) = f ( x) (3 x3 ) 3 , then fof(x) is 1 (B) x3 (A) x 3 7. Number of binary operations on the set {a, b} are (A) 10 8. (D) (3 – x3). (C) x (B) 16 (C) 20 (D ) 8 Let A = {1, 2, 3}. Then number of relations containing (1, 2) and (1, 3) which are reflexive and symmetric but not transitive is (A) 1 9. (B) 2 (C) 3 (D) 4 4 4x Let f : R – → R be a function defined as f ( x) . The inverse of f is the map g : 3x 4 3 4 Range f → R – given by 3 (A) g ( y ) 3y 3 4y (B) g ( y ) 4y 4 3y (C) g ( y ) 4y 3 4y (D) g ( y ) 3y 4 3y -1- 2. INVERSE TRIGONOMETRIC FUNCTIONS NCERT MCQS: 1. tan 1 3 sec1 (2) is equal to [MQP] B) A) π 2. 1 2 B) B) B) x 1 x 2 sin 1 (1 x) 2sin 1 x 1 4 D) 1 D) 2 3 C) 0 2 5 6 C) 3 D) 6 1 2 1 B) 2 1 x 2 , then x is equal to B) 1, 1 2 1 C) 1 x 2 x D) 1 x2 [MQP] C) 0 D) 1 2 4 D) 3 4 x x y tan 1 tan 1 is equal to [MQP] x y y A) 8. C) sin(tan-1 x), |x| < 1 is equal to [MQP] A) 0, 7. 1 3 7 6 A) 6. D) 7 cos 1 cos is equal to 6 A) 5. 3 tan 1 3 cot 1 3 is equal to (2022 M) A) π 4. 3 2 3 C) 1 sin sin 1 is equal to 2 3 A) 3. 2 B) 3 C) If sin-1x=y, then A) 0y B) -/2y/2 C)0<y< D)-/2<y</2 -2- 3. MATRICES NCERT MCQS: 1. Which of the given values of x and y make the following pair of matrices equal 5 0 y 2 3 x 7 y 1 2 3 x , 8 4 1 1 2 2 a) x , y 7 b) Not possible to find c) y = 7, y d) x , y 3 3 3 3 2. The number of all possible matrices of order 3 × 3 with each entry 0 or 1 is: [MQP] a) 27 b) 18 c) 81 d) 512 Assume X, Y, Z, W &P matrices of order 2 × 𝑛, 3 × 𝑘, 2 × 𝑝, 𝑛 × 3 & 𝑝 × 𝑘 respectively 3. The restriction on n, k and p so that PY + WY will be defined are: A) k = 3, p = n B) k is arbitrary, p = 2 C) p is arbitrary, k = 3 D) k = 2, p = 3 4. If n = p, then the order of the matrix 7X – 5Z is: A) p × 2 B) 2 × n C) n × 3 D) p × n 5. If A is such that A² = I, then (A) 1 + α² + βγ = 0 (B) 1 – α² + βγ = 0 (C) 1 – α² – βγ = 0 (D) 1 + α² – βγ = 0 2 6. If A is square matrix such that A = A, then (I + A)³ – 7 A is equal to (A) A (B) I – A (C) I (D) 3A 7. If A, B are symmetric matrices of same order, then AB – BA is a (A) Skew symmetric matrix (B) Symmetric matrix (C) Zero matrix (D) Identity matrix cos sin 8. If A , then A + Aꞌ = I, if the value of α is sin cos 3 (A) (B) (C) π (D) 6 3 2 9. If the matrix A is both symmetric and skew symmetric, then (A) A is a diagonal matrix (B) A is a zero matrix (C) A is a square matrix (D) None of these 10. Matrices A and B will be inverse of each other only if (A) AB = B A (B) AB = BA = 0 (C) AB = 0, BA = I (D) AB = BA = I [ ] 11. 𝐴 = 𝑎𝑖𝑗 𝑚×𝑛 is a square matrix if (A) 𝑚 < 𝑛 (B) 𝑚 > 𝑛 (C) 𝑚 = 𝑛 (D) None 4. DETERMINANTS NCERT MCQ : 1. If x 2 6 2 , then x is equal to 18 x 18 6 (A) 6 2. 3. (B) ±6 (C) -6 Let A be a square matrix of order 3 × 3, then | kA| is equal to (A) k| A| (B) k2 | A| (C) k3 | A| Which of the following is correct (D) 0 (D) 3k | A | (A) Determinant is a square matrix. (B) Determinant is a number associated to a matrix. (C) Determinant is a number associated to a square matrix. (D) None of these -3- 4. 5. If area of triangle is 35 sq units with vertices (2, – 6), (5, 4) and (k, 4). Then k is (A) 12 (B) –2 (C) –12, –2 a11 a12 If a21 a22 a31 a32 a13 a23 and Aij is Cofactors of aij, then value of Δ is given by a33 (A) a11 A31+ a12 A32 + a13 A33 (C) a21 A11+ a22 A12 + a23 A13 6. (B) a11 A11+ a12 A12 + a13 A13 (D) a11 A11+ a21 A21 + a31 A31 x 2 x 3 x 2a If a, b, c, are in A.P, then the determinant x 3 x 4 x 2b is x 4 x 5 x 2c (A) 0 7. (B) 1 (C) x (D) 2x x 0 0 If x, y, z are nonzero real numbers, then the inverse of matrix A 0 y 0 is 0 0 z x 1 (A) 0 0 0 y 1 0 x 1 (B) xyz 0 0 0 0 z 1 1 Let A sin 1 (A) Det (A) = 0 sin 1 sin 0 y 1 0 0 0 z 1 1 0 0 1 0 1 0 (D) xyz 0 0 1 x 0 0 1 0 y 0 (C) xyz 0 0 z 8. (D) 12, –2 1 sin , where 0 ≤ θ ≤ 2π. Then 1 (B) Det (A) ∈ (2, ∞) (C) Det (A) ∈ (2, 4) (D) Det (A) ∈ [2, 4] 9. Let A be a non singular square matrix of order 3 then det(adjA)= (A) det(A) (B) det(A2) (C) det(A3) (D)none -1 10. If A is an invertible matrix of order 2 then det(A )= (A) det(A) (B) 1/det(A) (C) 1 (D) 0 5. CONTINUITY AND DIFFERENTIABILITY NCERT MCQ : 1. The function f(x) = [x] is continuous at x = a) 4 b) -2 c) 1 d) 1.5 2. The function f(x) = |x + 1| + |x – 1| is a) continuous at x = -1 as well as x = 1 b) continuous at x = -1 but not x = 1 c) continuous at x = 1 but not x = -1 d) None 3. The function f(x) = |x + 3| is not differentiable at x = a) -3 b) 1 c) 2 d) 3 -4- 4. If f(x) = x sin 1 , x ≠ 0 then the value of the function at x = 0 so that the function is continuous at x = 0 x is a) 0 b) -1 c) 1 d) Indeterminate 3x 4 ; 0 x 2 is continuous at x = 2 then λ = 2x ; 2 x 3 5. If f(x)= a) -2 b) -1 c) 0 6. For what value of the function f(x)= a) 5 3x 4 tan x at x b) 6 x 2 32 ; x2 7. If f(x) = x 2 k ; x2 a) 16 d) 2 x = 0 is continuous c) 7 d) 4 is continuous at x = 2 then k = b) 80 c) 32 d) 8 1 cos 4x ; x0 x2 a ; x 0 then the value of function f(x) is continuous at x = 0 is 8. If f (x) x ; x0 16 x 4 a) 5 b) 8 9. How should we define f (x) a) a + b c) 4 log(1 ax) log(1 bx) at x=0 so as to make it continuous at x = 0 x b) logea + logeb log e x ; if f (x) 10. If x 1 k ; if a) 0 x 1 d) 3 d) log e a c) a + b b is continuous at x = 1 then value of k is x 1 b) -1 c) 1 d) e 7. INTEGRALS .NCERT MCQ: 1. 2. 1 The anti derivative of x equals x 1 2 2 1 2 1 1 A) x 3 2 x 2 c B) x 3 x c 3 2 3 If C) 1 2 32 x 2x 2 c 3 d 3 f ( x) 4 x 3 4 such that f(2) = 0. Then f(x) is dx x 4 A) x 1 129 x3 8 3 B) x 1 129 x4 8 4 C) x D) 3 32 1 12 x x c 2 2 (CET) 1 129 x3 8 3 D) x 1 129 x4 8 -5- 3. 10 x9 10 x log e 10 x10 10x dx equals [CET] A) 10x – x10 = c 4. sin 2 dx equals x cos 2 x A) tan x + cot x + c 5. dx is equal to e e x x (A) tan-1(ex) + C 8. B) tan x – cot x + c B) tan (xex) + c C) tan (ex) + c D) cot (ex) + c (B) tan-1(e-x) + C (C) log(ex-e-x) + C (D) log(ex + e-x) + C [MQP] (B) log |sin x + cos x| + C (D) If f (a b x) f ( x), then a xf ( x)dx is equal to b 1 (sin x cos x) 2 [CET] (A) ab b f (b x)dx 2 a (B) ab b f (b x)dx 2 a (C) ba b f ( x)dx 2 a (D) ab b f ( x)dx 2 a x A) 12. D) tan x + sec x + c [MQP] 1 C sin x cos x 2 dx equals 2x 2 A) x tan-1 (x + 1) + c 11. D) tan x – cot 2x + c [MQP] (C) log |sin x – cos x| + C 10. C) tan x cot x + c B) tan x + cosec x + c C) –tanx + cot x + c cos 2 x dx is equal to (sin x cos x) 2 (A) 9. D) log(10x + x10) + c e x (1 x) equals [MQP] cos 2 ( xe x ) A) – cot (exx) + c 7. C) (10x – x10)-1 + c [MQP] sin 2 x cos 2 x sin 2 x cos2 x dx is equal to A) tan x + cot x + c 6. B) 10x + x10 + c dx 9 x 4 x2 [CET] B) tan-1 (x + 1) + c C) (x + 1) tan-1x + c D) tan-1 x + c equals 1 1 9 x 8 1 1 9 x 8 1 1 8 x 9 1 1 9 x 8 sin c B) sin c D) sin c C) sin c 9 3 2 2 8 8 9 9 xdx ( x 1)( x 2) equals A) log ( x 1)2 c x2 B) log ( x 2)2 c x 1 x 1 C) log c x2 2 D) log ( x 1)( x 2) c -6- 13. 14. dx equals 2 1) x( x 1 A) log | x | log( x 2 1) C 2 1 B) log | x | log( x 2 1) C 2 1 C) log | x | log( x 2 1) C 2 D) 1 log | x | log( x 2 1) C 2 C) 1 x3 e c 2 x e 2 x3 1 x3 e c 3 A) 15. dx equals e x 1 A) 17. 2 3 0 3 D) 1 x2 e c 2 sec x(1 tan x)dx equals [MQP] A) ex cos x + c 16. 1 x2 e c 3 B) B) ex sec x + c C) ex sin x + c D) ex tan x + c dx equals 1 x2 3 2 3 B) dx equals 4 9x2 A) 6 C) 6 D) 12 C) 24 D) 4 (2017M) 2 12 B) 1 18. ( x x3 ) 3 dx is [CET] The value of the integral 1 x4 3 1 A) 6 19. If f(x) = B) 0 x 0 t sin t dt , the f′(x) is A) cosx + x sin x 20. C) 3 D) 4 C) x cosx D) sinx + x cosx (C) -1 (D) [CET] B) x sinx 2x 1 1 dx is The value of 0 tan 1 2 1 x x (A) 1 21. The value A) 0 (B) 0 2 2 4 ( x3 x cos x tan 5 x 1)dx is [CET] B) 2 4 3sin x 22. The value 0 2 log dx is 4 3cos x 3 A) 2 B) 4 C) π D) 1 C) 0 D) -2 [CET] -7- 23. ∫ √1 + 𝑥 2 𝑑𝑥 is equal to A) B) C) D) 𝑥 2 1 √1 + 𝑥 2 + 2 log | (𝑥 + √1 + 𝑥 2 ) | + 𝐶 3 2 (1 + 𝑥 2 )2 + 𝐶 3 3 2 𝑥 (1 + 𝑥 2 )2 + 𝐶 3 𝑥2 2 1 √1 + 𝑥 2 + 2 x 2 log | (𝑥 + √1 + 𝑥 2 ) | + 𝐶 24. ∫ √𝑥 2 − 8𝑥 + 7 𝑑𝑥 is equal to A) B) C) D) 1 2 1 2 1 2 1 2 (𝑥 − 4)√𝑥 2 − 8𝑥 + 7 + 9 log|𝑥 − 4 + √𝑥 2 − 8𝑥 + 7| + 𝐶 (𝑥 + 4)√𝑥 2 − 8𝑥 + 7 + 9 log|𝑥 + 4 + √𝑥 2 − 8𝑥 + 7| + 𝐶 (𝑥 − 4)√𝑥 2 − 8𝑥 + 7 − 3√2 log|𝑥 − 4 + √𝑥 2 − 8𝑥 + 7| + 𝐶 (𝑥 − 4)√𝑥 2 − 8𝑥 + 7 − 9 2 log|𝑥 − 4 + √𝑥 2 − 8𝑥 + 7| + 𝐶 10. VECTORS ALGEBRA NCERT MCQ: 1. 2. In triangle ABC given below, which of the following is not true: (A) AB BC CA 0 (B) AB BC AC 0 (C) AB BC CA 0 (D) AB CB CA 0 If a and b are two collinear vectors, then which of the following are incorrect: (A) b a , for some scalar λ (B) a b (C) the respective components of a and b are proportional (D) both the vectors a and b have same direction, but different magnitudes. 3. If a is a nonzero vector of magnitude ‘a’ and λ a nonzero scalar, then λ a is unit vector if (A) λ = 1 4. (B) λ = – 1 (C) a = | λ| Let the vectors a and b be such that | a | 3 and | b | (D) a = 1/| λ| 2 , then a b is a unit vector, if the angle 3 between a and b is (A) π/6 (B) π/4 (C) π/3 (D) π/2 -8- 5. 1 1 Area of a rectangle having vertices A, B, C and D with position vectors iˆ ˆj 4kˆ , iˆ ˆj 4kˆ and 2 2 1 1 iˆ ˆj 4kˆ , iˆ ˆj 4kˆ respectively is 2 2 (A) 6. 1 2 (B) 1 (D) 3 If θ is the angle between any two vectors a and b , then a b a b whenθ is equal to (B) 4 (C) 2 (D) π If θ is the angle between two vectors a and b , then a b 0 only when (A) 0 <θ< 9. (C) 1 (B) –1 (A) 0 8. (D) 4 The value of iˆ. ˆj kˆ ˆj iˆ kˆ kˆ iˆ ˆj is (A) 0 7. (C) 2 2 (B) 0 2 (C) 0 < θ < π (D) 0 ≤ θ ≤ π Let a and b be two unit vectors and θ is the angle between them. Then a b is a unit vector if (A) 4 (B) 3 (C) 2 (D) 2 3 11.THREE DIMENSIONAL GEOMETRY NCERT MCQ : 1. Distance between the two planes: 2x + 3y + 4z = 4 and 4x + 6y + 8z = 12 is (A) 2 units 2. (B) 4 units (C) 8 units (D) 2 units 29 The planes: 2x – y + 4z = 5 and 5x – 2.5y + 10z = 6 are (A) Perpendicular (B) Parallel (C) intersect y-axis 5 (D) passes through 0, 0, 4 12. LINEAR PROGRAMMING PROBLEM NCERT MCQ: 1. The corner points of the feasible region determined by the following system oflinear inequalities: 2x + y ≤ 10, x + 3y ≤ 15, x, y ≥ 0 are (0, 0), (5, 0), (3, 4) and (0, 5). LetZ = px + qy, where p, q > 0. Condition on p and q so that the maximum of Zoccurs at both (3, 4) and (0, 5) is (A) p = q (B) p = 2q (C) p = 3q (D) q = 3p -9- 13.PROBABILITY NCERT MCQs 1. 2. 3. 4. 5. 6. 1 , P(B) = 0, then P (A|B) is 2 1 (A) 0 (B) (C) not defined (D) 1 2 If A and B are events such that P(A|B) = P(B|A), then (A) A ⊂ B but A ≠ B (B) A = B (C) A ∩ B = ∅ (D) P(A) = P(B) The probability of obtaining an even prime number on each die, when a pair of dice is rolled is 1 1 1 (A) 0 (B) (C) (D) 12 3 36 Two events A and B will be independent, if (A) A and B are mutually exclusive (B) P(A′B′) = [1 – P(A)] [1 – P(B)] (C) P(A) = P(B) (D) P(A) + P(B) = 1 4 Probability that A speaks truth is . A coin is tossed. A reports that a headappears. The probability 5 that actually there was head is(2018J) 1 1 4 2 (A) (B) (C) (D) 5 5 5 2 If A and B are two events such that A ⊂ B and P(B) ≠ 0, then which of thefollowing is correct? If P (A) = (A) P(A| B) = P(B) (B) P(A|B) < P(A) (C) P(A|B) ≥ P(A) (D) None of these P(A) 7. 8. 9. The mean of the numbers obtained on throwing a die having written 1 on threefaces, 2 on two faces and 5 on one face is 8 (A) 1 (B) 2 (C) 5 (D) 3 Suppose that two cards are drawn at random from a deck of cards. Let X be thenumber of aces obtained. Then the value of E(X) is 37 1 5 2 (A) (B) (C) (D) 13 13 13 221 In a box containing 100 bulbs, 10 are defective. The probability that out of asample of 5 bulbs, none is defective is 1 (B) 2 (A) 10-1 10. 5 9 (C) 10 The probability that a student is not a swimmer is 5 (D) 9 10 1 . Then the probability thatout of five students, four 5 are swimmers is (2016M) 4 4 1 (A) 5 C4 5 5 11. 12. 13. 4 4 1 (B) 5 5 1 4 (C) 5 C1 5 5 4 (D) None of these If A and B are two events such that P(A) ≠ 0 and P(B | A) = 1, then (A) A ⊂ B (B) B ⊂ A (C) B = ∅ (D) A = ∅ If P(A|B) > P(A), then which of the following is correct : (A) P(B|A) < P(B) (B) P(A ∩ B) < P(A) . P(B) (C) P(B|A) > P(B) (D) P(B|A) = P(B) If A and B are any two events such that P(A) + P(B) – P(A and B) = P(A), then (A) P(B|A) = 1 (B) P(A|B) = 1 (C) P(B|A) = 0 (D) P(A|B) = 0 - 10 -