Engineering Questions

Q.38. A monochromatic source of light operating at 15 kW emits 2.5 × 10²² photons/s. The region of an electromagnetic spectrum to which the emitted electromagnetic radiation belongs to (Take h = 6.6 ×

Q.2. Consider the quadratic equation . Let be the minimum value of the product of its roots and be the maximum value of the sum of its roots. Then the sum of the first six terms of the G.P., whose f

Q.66. Given below are two statements : Statement-I : Due to increase in van der Waals forces, the order of boiling points is . Statement-II: As [Figure: 1,4-dichlorobenzene] is more symmetric, its mel

Q.61. Consider the following molecules/species: [Figure: Three organic molecules labeled (x), (y), and (z). (x) is CH₃-C(=O)-CH₃ (acetone). (y) is CH₃-C(=O)-O⁻ (acetate ion). (z) is CH₃-C(=O)-H (aceta

Q.29. A capacitor C is first charged fully with potential difference of and disconnected from the battery. The charged capacitor is connected across an inductor having inductance L. In t s 25% of the

Q.46. A parallel plate capacitor is having separation between plates 0.885 mm. It has a capacitance of 1 µF when the space between the plates is filled with an insulating material of resistivity 1 × 1

Q.40. A thin convex lens and a thin concave lens are kept in contact and are co-axial. Which of the following statements is correct for this combination of two lenses?

Q.1. Let . Let be the roots of the equation . If and , then is equal to :

Q.58. Consider the following data : Electrolyte | (S cm mol) BaCl | x HSO | x HCl | x BaSO is sparingly soluble in water. If the conductivity of the saturated BaSO solution is x S cm then the solubil

Q.29. Two blocks (P and Q) with respectively masses 2 kg and 1.5 kg are joined by a massless thread. These blocks are mounted on a frictionless pulley which is fixed on the edge of a cube (S), as show

Q.43. A large drum having radius R is spinning around its axis with angular velocity , as shown in figure. The minimum value of so that a body of mass M remains stuck to the inner wall of the drum, t

Q.75. At the transition temperature T, A B and where A and B are two states of substance X. The transition temperature in °C when pressure is 1 atm is _________ (Nearest integer)

Q.60. Given below are two statements : Statement-I : Presence of large number of unpaired electrons in transition metal atoms results in higher enthalpies of their atomisation. Statement-II : and ar

Q.63. Given below are two statements : Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation. Statement (II): An azeotropic mixture cannot be separated by fraction

Q.55. Arrange the following isothermal processes in order of the magnitude of the work (p - V) involved between states 1 and 2. A. Expansion in single stage wA B. Expansion in multi stages wB C. Compr

Q.9. A bag contains 6 blue and 6 green balls. Pairs of balls are drawn without replacement until the bag is empty. The probability that each drawn pair consists of one blue and one green ball is :

Q.18. The number of critical points of the function in the interval is equal to:

Q.26. The density of a uniform cylinder is determined by measuring its mass , length and diameter . The measured values of and are , and , respectively. Calculated percentage fractional error in

Q.64. The total number of aromatic compounds/species from the following is [Figure: Six chemical structures]

Q.4. The sum of all possible values of , for which the system of equations : has a non-trivial solution, is equal to :