Engineering Questions

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: Structure of p-dichlorobenzene] is more symmetric,

Q.51. What volume of hydrogen gas at STP would be liberated by action of 50 mL of of 50% purity (density = 1.3 g mL⁻¹) on 20 g of zinc ? Given : Molar mass of H, O, S, Zn are 1, 16, 32, 65 g mol⁻¹ re

Q.5. is equal to :

Q.26. The dimensional formula of ( = permittivity of vacuum and E = electric field) is . The value of =

Q.34. The two wires A and B of equal cross-section but of different materials are joined together. The ratio of Young's modulus of wire A and wire B is 20/11. When the joined wire is kept under certai

Q.9. A data consists of 20 observations . If and , then the ratio of mean to standard deviation of this data is:

Q.29. If x and y coordinates of a projectile as a function of time (t) are given as and , respectively, then the angle (in degrees) made by the projectile with horizontal when is

Q.72. 'x' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous chloride. 'y' is the major product obtained from the benzen

Q.40. A 30 cm long solenoid has 10 turns per cm and area of 5 cm². The current through the solenoid coil varies from 2 A to 4 A is 3.14 s. The e.m.f. induced in the coil is a × 10⁻⁵ V. The value a is

Q.8. The number of ways, of forming a queue of 4 boys and 3 girls such that all the girls are not together, is: