Engineering Questions — JEE Main
409 solved questions with detailed explanations
Q.39. A solenoid has a core made of material with relative permeability 400. The magnetic field produced in the interior of solenoid is 1.0T. The magnetic intensity in SI units is . The value of is _
Q.32. The graph shows variation of stopping potential with the frequency of the incident radiation for three photosensitive metals , , and . Which metal will give out electrons with greater kinetic
Q.70. Statement I: Sodium dichromate and potassium dichromate are classified as primary standard in titrimetric analysis. Statement II : Phenolphthalein is a weak base, therefore it dissociates in aci
Q.63. R value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42. 2-methylpropene is treated with dilute HSO to give major organic product (X). R value for (X) in the same solvent
Q.53. The covalent radii of atoms A and B are r and r, respectively. The covalent bond length and total length of AB molecule are respectively :
Q.20. The value of the integral is:
Q.10. Let an ellipse , , pass through the point and have eccentricity . Then the length of its latus rectum is :
Q.33. A liquid of density 600 kg/m³ flowing steadily in a tube of varying cross-section. The cross-section at a point A is 1.0 cm² and that at B is 20 mm². Both the points A and B are in same horizont
Q.54. Consider the following data for the reaction at 600 K. The (in kJ mol⁻¹) for the reaction is: [Figure: Table with A/H600K and S600K values for XY(g), X2(g), Y2(g)]
Q.37. From the circuit given below, the capacitance between terminals A and B shown in the circuit is __________ . (take and .)