Engineering Questions
409 solved questions with detailed explanations
Q.64. Identify the correct IUPAC name of hydrocarbon (x) containing three primary carbon atoms and with molar mass 72 g mol⁻¹.
Q.41. The energy of an electron in an orbit of the Bohr's atom is eV where is the ground state energy. If L is the angular momentum of the electron in this orbit and h is the Planck's constant, then
Q.53. is isostructural with : Choose the correct answer from the options given below:
Q.14. If is the image of in the line , then the possible value(s) of is(are) :
Q.60. Given below are two statements : Statement I: The number of pairs among [Ti, V], [V, Mn], [Mn, Fe] and [V, Cr] in which both ions are coloured is 3. Statement II: The number pairs among [La, Yb]
Q.57. Match List-I with List-II. List-I (Reagents) A. H, Pd-BaSO B. SnCl, HCl C. CrOCl, CS D. CO, HCl, Anhyd. AlCl List-II (Reaction Name (Involving aldehydes)) I. Etard Reaction II. Rosenmund Reducti
Q.51. The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1. It has two carbon atoms. The weight (in g) of formed when 3.38 g of this hydrocarbon is completely burnt in oxygen is : (
Q.55. 20 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of the above acetic acid and 14.2 mL of 0.1 M NaOH solution.
Q.46. A copper wire of length 3 m is stretched by 3 mm by applying an external force. The volume of the wire is m³. The elastic potential energy stored in the wire in stretched condition would be J.
Q.11. Let O be the vertex of the parabola and its chords OP and OQ are perpendicular to each other. If the locus of the mid-point of the line segment PQ is a conic C, then the length of its latus rec