Q.4070·Miscellaneous·2021·EasyWhich one of the following compounds is used in 'black and white' photography?View question
Q.4071·Miscellaneous·2021·EasyWhat is the number of water molecules present in a Ferrous Sulphate crystal?View question
Q.4072·Miscellaneous·2021·EasyWhat is the value of the following determinant? | cos C tan A 0 | | sin B 0 –tan A | | 0 sin B cos C |View question
Q.4073·Miscellaneous·2021·EasyLet ABC be a triangle. If cos 2A + cos 2B + cos 2C = –1 then which one of the following is correct?View question
Q.4074·Miscellaneous·2021·EasyConsider the following statements in respect of relations and functions : 1. All relations are functions but all functions are not relations. 2. A relation from A to B is a subset of Cartesian product A × B. 3. A relation in A is a subset of Cartesian product A × A. Which of the above statements are correct?View question
Q.4075·Miscellaneous·2021·EasyConsider three sets X, Y and Z having 6, 5 and 4 elements respectively. All these 15 elements are distinct. Let S = (X – Y) ∪ Z. How many proper subsets does S have?View question
Q.4076·Miscellaneous·2021·EasyLet p, q and 3 be respectively the first, third and fifth terms of an AP. Let d be the common difference. If the product (pq) is minimum, then what is the value of d?View question
Q.4077·Miscellaneous·2021·EasyLet A = | 0 2 | | –2 0 | and (mI + nA)² = A where m, n are positive real numbers and I is the identity matrix. What is (m + n) equal to?View question
Q.4078·Miscellaneous·2021·EasyConsider a regular polygon with 10 sides. What is the number of triangles that can be formed by joining the vertices which have no common side with any of the sides of the polygon?View question
Q.4079·Miscellaneous·2021·EasyThe inverse of a matrix A is given by | –2 1 | | 3/2 –1/2 | What is A equal to?View question
Q.4080·Miscellaneous·2021·EasyFor what values of k is the system of equations 2k²x + 3y – 1 = 0, 7x – 2y + 3 = 0, 6kx + y + 1 = 0 consistent?View question
Q.4081·Miscellaneous·2021·EasyHow many terms are there in the expansion of ((a² / b²) + (b² / a² + 2))²¹ where a ≠ 0, b ≠ 0?View question
Q.4082·Miscellaneous·2021·EasySuppose 20 distinct points are placed randomly on a circle. Which of the following statements is/are correct? 1. The number of straight lines that can be drawn by joining any two of these points is 380. 2. The number of triangles that can be drawn by joining any three of these points is 1140. Select the correct answer using the code given below.View question
Q.4083·Miscellaneous·2021·EasyHow many 4-letter words (with or without meaning) containing two vowels can be constructed using only the letters (without repetition) of the word 'LUCKNOW'?View question
Q.4084·Miscellaneous·2021·EasyIf C(n, 4), C(n, 5) and C(n, 6) are in AP, then what is the value of n?View question
Q.4085·Miscellaneous·2021·EasyIf | a – b a – b – c | | b a + b – c | = kabc = 0 | –a – b –a – b + c | (a ≠ 0, b ≠ 0, c ≠ 0) then what is the value of k?View question
Q.4086·Miscellaneous·2021·EasyIf 1/(b + c), 1/(c + a), 1/(a + b) are in HP, then which of the following is/are correct? 1. a, b, c are in AP 2. (b + c)², (c + a)², (a + b)² are in GP Select the correct answer using the code given below.View question