Engineering Questions
460 solved questions with detailed explanations
Q.65. The following structures are [Figure: Two organic molecules, RS1 and RS2, are shown. RS1 is 1-bromo-1-chloro-2,2-dimethylcyclopropane. RS2 is 1-bromo-1-chloro-2,2-dimethylcyclopropane, but drawn
Q.59. Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number, Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72] A. (Eu and Gd) B. (Dy and Ho) C. (Y
Q.71. The total number of unpaired electrons present in the , (low spin) (high spin), (high spin) and (low spin) octahedral complex systems is
Q.12. Let chord PQ of length of the parabola be such that the ordinates of points P and Q are in the ratio 1: 2. If the chord PQ subtends an angle at the focus of the parabola, then is equal to:
Q.28. At t = 0, a body of mass 100 g starts moving under the influence of a force N. After 2s its position is m . The ratio x : y is
Q.40. A magnetic field vector in an electromagnetic wave is represented by, . Its associated electric field vector is
Q.37. Under steady state condition the potential difference across the capacitor in the circuit is V.
Q.69. Given below are two statements : Statement I: The correct order in terms of bond dissociation enthalpy is Cl₂ > Br₂ > F₂ > I₂. Statement II: The correct trend in the covalent character of the me
Q.68. A D-aldotetrose on oxidation with concentrated HNO₃ resulted in optically inactive dicarboxylic acid. The structure of the D-aldotetrose is :
Q.29. Three masses kg, kg and kg are suspended from a fixed smooth frictionless pully as shown in the [Figure: diagram of masses suspended by a pulley] below. The value of is ________ (take g = 10
Q.41. Two point charges q₁ = 3µC and q₂=-4µC are placed at points (2\hat{i}+3\hat{j}+3\hat{k}) and (\hat{i}+\hat{j}+\hat{k}) respectively. Force on charge q₂ is N. (Take \frac{1}{4\pi \epsilon_0} = 9×
Q.6. The sum upto 10 terms is equal to :
Q.10. Let C be a circle having centre in the first quadrant and touching the x-axis at a distance 3 units from the origin. If the circle C has an intercept of length on y-axis, then the length of the
Q.15. The square of the distance of the point of intersection of the lines , and from the origin is :
Q.43. An electromagnetic wave travelling in x-direction is described by field equation . If the electron is restricted to move in y-direction only with speed of then ratio of maximum electric and mag
Q.55. By usual analysis, 1.00g of compound (X) gave 1.79g of magnesium pyrophosphate. The percentage of phosphorus in compound (X) is: (nearest integer) (Given, molar mass in g mol: O = 16, Mg = 24, P
Q.61. Identify the correct statements from the following: (A) [Fe(C₂O₄)₃]³⁻ is the most stable complex among [Fe(OH)₆]³⁻, [Fe(C₂O₄)₃]³⁻ and [Fe(SCN)₆]³⁻. (B) The stability of [Cu(NH₃)₄]²⁺ is greater t
Q.67. The strongest conjugate acid will result from [Figure: Four conjugate acids are shown. (1) Anilinium ion (protonated aniline). (2) p-Methoxyanilinium ion. (3) p-Nitroanilinium ion. (4) p-Methyla
Q.58. The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is :
Q.22. Let and . If the number of points where g is not continuous and is not differentiable are and respectively, then is equal to ________.