Engineering Questions — JEE Main
409 solved questions with detailed explanations
Q.28. The rain drop of mass 1 g, starts with zero velocity from a height of 1 km. It hits the ground with a speed of 5 m/s. The work done by the unknown resistive force is ________ J. (take )
Q.75. For a reaction A P at T K, the half life (t) is plotted as a function of initial concentration [A] of A as given below : [Figure: Graph showing half-life (t) on y-axis and initial concentration
Q.70. Which of the following amino acid will give violet coloured complex with neutral ferric chloride solution?
Q.63. IUPAC name of the some alkenes are given below : Find out the correct stability order. A. 2-Methylbut-2-ene B. cis-But-2-ene C. 2,3-Dimethylbut-2-ene D. Prop-1-ene Choose the correct answer from
Q.62. Match List-I with List-II. [Figure: Table matching purification techniques with their uses]
Q.58. Match List-I with List-II. List-I (Electronic configuration of neutral atom (where n = 2)) A. B. C. D. List-II (1st Ionization Energy (kJ mol⁻¹)) I. 2080 II. 899 III. 800 IV. 1402 Choose the
Q.67. Given below are two statements : Statement-I : Heating benzamide with bromine in an ethanolic solution of sodium hydroxide will give benzylamine. Statement-II : Nitration of aniline with at 288
Q.24. Let f: RR be a function such that f(x) + 3f(-x) = sinx, x R. Let maximum value of f on R be . If the area of the region bounded by the curves g(x) = x² and h(x) = x³, > 0, is ², then 30³ is eq
Q.51. Match List-I with List-II. List-I Mass of substance A. 1.8 mg water B. 9.8 mg sulphuric acid C. 1.8 mg carbon D. 5.85 mg salt (NaCl) List-II Number of atoms I. 2 × 10⁻⁴ × N_A II. 1.5 × 10⁻⁴ × N_
Q.2. Let and be real number such that . Then the value of is :