Engineering Questions
460 solved questions with detailed explanations
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
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
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
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
Q.70. A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid and treated with K₂CrO₄ to give yellow precipitate. When
Q.47. A vessel contains of a gas at pressure 8 bar and temperature 140°C with and . It is expanded adiabatically till pressure falls to 1 bar. The work done during this process is _______ kJ. (R is
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
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–
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:
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 :-
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
Q.45. The output Y for the given inputs A and B to the circuit is: [Figure: Logic circuit diagram]
Q.25. Let f be a twice differentiable function such that , . Then is equal to ________.
Q.36. Initial pressure and volume of a monoatomic ideal gas are P and V. The change in internal energy of this gas in adiabatic expansion to volume V_final = 27 V is J.
Q.26. Match the LIST-I with LIST-II List-I List-II A. Planck's constant I. MLT B. Stopping potential II. T C. Work function III. MLT D. Threshold frequency IV. MLTA Choose the correct answer from the
Q.59. Given below are two statements : Statement-I : Aluminium is more electropositive than thallium as the standard electrode potential value of is negative and is positive. Statement-II: The sum o
Q.74. Identify the metal ions among Co²⁺, Ni²⁺, Fe²⁺, V³⁺ and Ti²⁺ having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the high spin octahedral complexe
Q.44. Angular momentum of an electron in a hydrogen atom is , then the energy of the electron is _______ eV.
Q.9. A person has three different bags and four different books. The number of ways, in which he can put these books in the bags so that no bag is empty, is
Q.73. One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the alkane (x) is _________.