Engineering Questions
409 solved questions with detailed explanations
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
Q.40. A point light source emits E.M. waves in free space. A detector, placed at a distance of L m, measures the intensity as . The detector is now shifted to another location on the same spherical su
Q.56. Match the LIST-I with LIST-II List-I Reaction A. Williamson Synthesis B. Friedel Craft Reaction C. Bromination of vinyl benzene D. Chlorination of toluene in light List-II Mechanism I. Electroph
Q.3. Let A be a matrix such that , and . If , then is equal to :
Q.68. Arrange the following compounds according to increasing order of boiling points. n-CHOH (A), n-CHNH (B), n-CH (C) and CHNHCH (D).
Q.56. Given at 298 K: The in Volt at 298 K is given by :
Q.1. Consider the relation R on the set defined by if and only if . Then among the statements : I. The number of elements in R is 17 II. R is an equivalence relation
Q.51. Match List-I with List-II. List-I (Mass of substance) A. 1.8 mg water B. 9.8 mg sulphuric acid C. 1.8 mg carbon D. 5.85 mg salt (NaCl) List-II (Number of atoms) I. II. III. IV. Choose the co
Q.65. Given below are four compounds: (a) n-propyl chloride (b) iso-propyl chloride (c) sec-butyl chloride (d) neo-pentyl chloride Percentage of carbon in the one which exhibits optical isomerism is:
Q.41. A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its focal length and radius of curvature is