Access study resources, practice questions, exam strategies, syllabus updates, and preparation materials for JEE and NEET aspirants.
31. If the order of the matrix is m×n, then how many elements will there be in the matrix? A. mn B. 2mn C. mn2 D. m2 n2 Answer Option : A 32. Which of the following is not a type of matrix? A. Scalar matrix B. Minor matrix C. Diagonal matrix D. Symmetric matrix […]
41. Let * be a binary operation on Q, defined by a * b = 3ab5 is A. Commutative B. Associative C. Both (a) and (b) D. None of these Answer Option : C 42. Let * be a binary operation on set Q of rational numbers defined as a * b = ab5. Write
21. What is the value of sin-1(-x) for all x belongs to [-1, 1]? A. sin-1(-x)/2 B. -sin-1(x) C. sin-1(x) D. 2sin-1(x) Answer Option : B 22. What is the value of cos-1(-x) for all x belongs to [-1, 1]? A. cos-1(-x) B. π – cos-1(x) C. π – cos-1(-x) D. π + cos-1(x) Answer
11. A function f:R→R defined by f(x)=5×4+2 is one – one but not onto. A. True B. False Answer Option : B 12. Let A={1,2,3} and B={4,5,6}. Which one of the following functions is bijective? A. f={(1,4),(2,5),(3,6)} B. f={(1,4),(1,5),(1,6)} C. f={(1,5),(2,4),(3,4)} D. f={(2,4),(2,5),(2,6)} Answer Option : A 13. Let M={5,6,7,8} and N={3,4,9,10}. Which one of
01. Which of the following relations is symmetric and transitive but not reflexive for the set I = {4, 5}? A. R = {(4, 4), (5, 5)} B. R = {(4, 5), (5, 4)} C. R = {(4, 5), (5, 4), (4, 4)} D. R = {(4, 4), (5, 4), (5, 5)} Answer Option :
Learn and practice General Knowledge questions and answers on Chemistry with very easy and understandable explanations. GK questions are very helpful. JEE Chemistry Syllabus Chemistry JEE Syllabus Some basic concepts in chemistry States of matter Atomic structure Chemical bonding and molecular structure Chemical thermodynamics Solutions Equilibrium Redox reactions and electrochemistry Chemical kinetics Surface chemistry Classification
21. Geometrical isomerism is exhibited by ______. A. Butanol B. 2-Butenol C. 2-Butyne D. 2-Butene Answer Option : D 22. Which of the following will form 2 acetaldehyde molecules on ozonolysis? A. 1-butene B. 1-pentene C. 2-butene D. 2-pentene Answer Option : C 23. Identify the addition reaction which is not undergone by the alkenes?
11. Which of the following is true regarding polyhydric alcohols? A. It should have more than four OH groups B. It should have three or more OH groups C. It should have two or more OH groups D. It should have one or more OH groups Answer Option : C 12. Benzene diazonium chloride on
01. Which of the following is used as an indicator in the titration of a strong acid and a weak base? A. Methyl orange B. Phenolphthalein C. Thymol blue D. Fluorescein Answer Option : 02. The ideal indicator for the titration of strong acid and weak base should have pH range between ______. A. 3-5
31. Ziegler Natta catalyst is associated with _____. A. hydrogenation of alkenes B. hydroformylation of alkenes C. polymerisation of alkenes D. none of the above Answer Option : C 32. Which of the following is incorrect for a catalyst? A. Catalyst does not start a reaction B. Co-enzymes increase the activity of an enzyme C.
41. Good conductors have many loosely bound _____. A. atoms B. electrons C. protons D. molecules Answer Option : B 42. As temperature increases electrolytic conduction _____. A. increases B. decreases C. remains unaffected D. either increases or decreases Answer Option : A 43. With a rise in temperature, the resistance of semiconductors _____. A.
51. Formation of interstitial compounds makes the transition metals more ________. A. soft B. ductile C. malleable D. hard Answer Option : D 52. Transition elements exhibit variable valency because they release electrons from ________. A. ns orbitals B. np orbitals C. (n-1)d orbitals D. (n-1)d & ns orbitals Answer Option : C 53. In
61. The maximum number of electrons that can fit in all the orbitals with n = 2 and l = 1? A. 2 B. 4 C. 4 D. 8 Answer Option : C 62. Which of the following quantum numbers can distinguish between two electrons present in the same orbital? A. Azimuthal quantum number B.
71. Air pollution that occurs in sunlight is _______. A. fog B. acid rain C. reducing smog D. oxidizing smog Answer Option : D 72. How many unit cells are divided equally in a face-centred cubic lattice? A. 2 B. 4 C. 6 D. 8 Answer Option : C 73. Copper crystalline in FCC with
81. What is a necessary condition for a reaction to be spontaneous at all temperatures? A. 𐤃H < 𐤃G B. 𐤃H = 𐤃G = 0 C. 𐤃G and H should be positive D. 𐤃G and 𐤃H should be negative Answer Option : D 82. Chemical dissociation is _______. A. exothermic B. reversible C. endothermic D.
91. The buffer region is represented by _______. A. the concave curve after adding titrant B. the flat curve after the equivalence point C. the flat curve before the equivalence point D. the steep curve after the equivalence point Answer Option : C 92. Which of the following represents the equivalence point in the graph
