Arrange the following in the increasing order of their bond order: O2, O, O and O, O, O2 O

147.    Arrange the following in the increasing order of their bond order: O2, O, O and O

(A) O,O2, O,O

(B) O2, O, O, O

(C) O, O, O2 O

(D) O, O, O, O2

Answer:: (C)

148.    Based on the first law of thermodynamics, which one of the following is correct?

(A) For an adiabatic process: DU = -w

(B) For an isochoric process: DU = -q

(C) For a cyclic process: q = -w

(D) For an isothermal process: q = +w

Answer:: (C)

149.    The yellow precipitate formed during the chromyl chloride test is chemically

(A) lead chromate

(B) chromic acid

(C) sodium chromate

(D) lead acetate

Answer:: (A)

150.    The typical range of molar enthalpies for the strongest intermolecular (Hydrogen) bonds is

(A) 200 – 300 kJ

(B) 300 – 500 kJ

(C) 4 – 25 kJ

(D) 4 – 25 J

Answer:: (C)

151.    The time required for 100% completion of a zero order reaction is

(A) a/2k

(B) ak

(C) 2k/a

(D) a/k

Answer:: (D)

152.    The standard emf of a galvanic cell involving 2 moles of electrons in its rodox reaction is 0.59 V. The equilibrium constant for the redox reaction of the cell is

(A) 105

(B) 1020

(C) 1010

(D) 10

Answer:: (B)