Engineering Questions
460 solved questions with detailed explanations
Q.70. A paper dipped in a dil. HSO solution of 'X' upon treatment with SO gas turns into green. The compound 'X' is :
Q.59. The correct order of reactivity of the following benzyl halides towards reaction with KCN is: [Figure: Four benzyl halides are shown: (a) Benzyl bromide with -OH group at para position. (b) Benz
Q.63. Given below are two statements: Statement I: Crystal Field Stabilization Energy (CFSE) of [Cr(HO)] is greater than that of [Mn(HO)]. Statement II: Potassium ferricyanide has a greater spin-only
Q.59. Find the correct statements related to group 15 hydrides. A. Reducing nature increases from NH to BiH. B. Tendency to donate lone pair of electrons decreases from NH to BiH. C. The stability of
Q.13. Let , and . Then is equal to:
Q.63. The major product of which of the following reaction is not obtained by rearrangement reaction? [Figure: Four reaction schemes with reactants and products]
Q.48. A particle having electric charge C and mass kg is accelerated by applying an electric potential of 1.21 V. Wavelength of the matter wave associated with the particle is m. The value of is .
Q.68. Consider the three aromatic molecules (P, Q and R) whose structures have been given below : [Figure: Three aromatic molecules P, Q, R. P is 1,3,5-trimethylbenzene (mesitylene). Q is 1,2,4,5-tetr
Q.60. Given below are two statements : Statement I: The number of pairs among [Ti⁴⁺, V²⁺], [V³⁺, Mn²⁺], [Mn³⁺, Fe³⁺] and [V⁴⁺, Cr²⁺] in which both ions are coloured is 3. Statement II: The number pair
Q.50. A certain gas is isothermally compressed to rd of its initial volume ( litre) by applying required pressure. If the bulk modulus of the gas is N/m, the magnitude of work done on the gas is ____
Q.47. Some distance star is to be observed by some telescope of diameter of objective lens a, at an angular resolution of 3.0 × 10⁻⁷ radian. If the wavelength of light from the star reaching the teles
Q.55. Consider the following reactions in which all the reactants and products are present in gaseous state , , The value of for the equilibrium is :
Q.10. Let P be a moving point on the circle . Then, the maximum distance of P from the vertex of the parabola is equal to :
Q.48. Two identical small bar magnets each of dipole moment J/T are placed at a center to center separation of 10 cm, with their axes perpendicular to each other as shown in figure. The value of magn
Q.7. A set of four observations has mean 1 and variance 13. Another set of six observations has mean 2 and variance 1. Then, the variance of all these 10 observations is equal to :
Q.56. At , 20.0 mL of 0.2 M weak monoprotic acid HX is titrated against 0.2 M NaOH. The pH of the solution (a) at the start of the titration (when NaOH has not been added) and (b) when 10 mL of NaOH i
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 ma
Q.57. An electrochemical cell is constructed using half cells in the direction of spontaneous change Fe(OH)(s) + 2e Fe(s) + 2OH(aq) E = -0.88V and AgBr(s) + e Ag(s) + Br(aq) E = +0.07V Which of the
Q.34. A spherical liquid drop of radius R acquires the terminal velocity v₁ when falls through a gas of viscosity η. Now the drop is broken into 64 identical droplets and each droplet acquires termina
Q.4. Consider the system of linear equations in x, y, z :,,,Where is a differentiable function. If this system has infinitely many solutions for all , then f