Engineering Questions
460 solved questions with detailed explanations
Q.43. In Rutherford's alpha-particle scattering experiment, only a few alpha particles rebound back because (A) The size of gold nucleus is very small as compared to the size of gold atom. (B) Alpha p
Q.28. The velocity of a particle is given as . The magnitude of acceleration at point is ____ .
Q.65. Complete the following reaction sequence and give the name of major product 'P'. (Major product)
Q.71. The first and second ionization constants of H₂X are and respectively. The concentration of X²⁻ in 0.1 M H₂X solution is M. (Nearest Integer)
Q.15. The square of the distance of the point from the line along the line is equal to:
Q.24. Let a circle C have its centre in the first quadrant, intersect the coordinate axes at exactly three points and cut off equal intercepts from the coordinate axes. If the length of the chord of C
Q.47. The terminal velocity of a metallic ball of radius 6 mm in a viscous fluid is 20 cm/s. The terminal velocity of another ball of same material and having radius 3 mm in the same fluid will be ...
Q.54. The pairs among A = [SO, CO], B = [O, F], C = [CN, CO], D = [NH, HO] and E = [MnO, CrO] that do not have similar Lewis dot structure are :
Q.71. 5.33 g of CrCl₃·6H₂O, which is a 1 : 3 electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride ions in the eluted solution, on treatment with AgNO₃, results in
Q.40. A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed v. If x is the separation between the plates at any instant, then the time rate of change o
Q.32. The pulley shown in figure is made using a thin rim and two rods of length equal to diameter of the rim. The rim and each rod have a mass of M. Two blocks of mass of M and m are attached to two
Q.49. A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed in a uniform magnetic field of magnitude 0.4 T. The axis of the coil makes an angle of with the directi
Q.33. Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: If the average kinetic energy of and molecules, kept in two different sized c
Q.56. The solubility product constants of AgCrO and AgBr are 32x and 4y respectively at 298 K. The value of can be expressed as :
Q.5. Let upto 40 terms. If is a root of the equation , , then is equal to :
Q.4. Let and . If det(B) = 66, then det(adj (A)) equals :
Q.58. is the time required for the 100% completion of the reaction while is the time required for 50% of the reaction to be completed. Which of the following option correctly represents the relation
Q.37. A spherical body of radius r and density falls freely through a viscous liquid having density and viscosity and attains a terminal velocity . Estimated maximum error in the quantity is : (Ig
Q.7. A letter is known to have arrived by post either from KANPUR or from ANANTPUR. On the the envelope just two consecutive letters AN are visible. The probability, that the letter came from ANANTPUR
Q.73. 4.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound X formed will be ______ 10 (Nearest Integer) (Given molar mass