Engineering Questions

409 solved questions with detailed explanations

191

Q.12. The sum of all the integral values of p such that the equation , , has at least one solution, is :

JEE MainMathematics
192

Q.1. Consider the relation R on the set defined by if and only if . Then among the statements : I. The number of elements in R is 17 II. R is an equivalence relation

JEE MainMathematics
193

Q.34. The temperature of a metal strip having coefficient of linear expansion is increased from T to T resulting in increase of its length by . The temperature is further increased from T to T, such

JEE MainPhysics
194

Q.29. The position of an object having mass kg as a function of time is given as m. At s, which of the following statements are correct? A. The linear momentum kg.m/s. B. The force acting on the

JEE MainPhysics
195

Q.27. Two cars A and B are moving in the same direction along a straight line with speeds 100 km/h and 80 km/h, respectively such that car A is moving ahead of car B. A person in car B throws a stone

JEE MainPhysics
196

Q.60. The correct statements among the following are : A. Basic vanadium oxide is used in the manufacture of HSO. B. The spin-only magnetic moment value of the transition metal halide employed in Zieg

JEE MainChemistry
197

Q.66. Given below are two statements : Statement-I : The condensation reaction between and under optimum pH will produce . Statement-II : The molecule, [Figure: Molecule structure] will generate Ph–

JEE MainChemistry
198

Q.56. Consider the following data: (methane, g) = -X kJ mol Enthalpy of sublimation of graphite = Y kJ mol Dissociation enthalpy of H = Z kJ mol The bond enthalpy of C – H bond is given by:

JEE MainChemistry
199

Q.44. The ratio of momentum of the photons of the 1st and 2nd line of Balmer series of Hydrogen atoms is . The possible values of and are :-

JEE MainPhysics
200

Q.74. At 298 K, the molar conductivity of x% (w/w) MX solution (aqueous) is 123.5 S cm mol. The conductance of same solution is S. The value of x is _______ . (Given : cell constant = 1.3 cm; molar m

JEE MainChemistry