61. Which of the following is not a reducing sugar ?

a) Glucose b) Fructose

c) Mannose d) Sucrose

Ans : d) Sucrose

62. Oxidation state of oxygen in is -----.

Ans : -1

63. Co-ordination number of Zn in ZnS (Zinc blend) is -----.

Ans : 4

64. The product formed on reaction of ethyl alcohol with bleaching powder is ----------

Ans :

65. Which is an amphoteric oxide ?

a) ZnO b) CaO

c) BaO d) SrO

Ans : ZnO

66. Give the order of E. A of F, Cl, Br & I

Ans :

67. The order of radioactive disintegration reaction is --------- .

Ans :

68. In which case formation of butane nitrile is possible ?

a) b)

c) d)

Ans :

69. for is . What is its solubility in moles/litre ?

Ans :

70. reaction is fastest in

a) b)

c) d)

Ans :

71. Decreasing order of C—C bond length is

i) ii)

iii) iv)

Ans :

72. What is the magnetic moment of ?

Ans : 5.92

73. The ionic conductance of following cation in a given conc. are in the order

a)

b)

c)

d)

74. In which radiation mass number and atomic number will not charge ?

a) b)

c) d)

Ans :

75. Which dose not follow Markownikoff's rule ?

a) b)

c) d)

Ans :

76. In which case methyl-t butyl ether is formed?

a)

b)

c)

d)

Ans :

77. forms where as P can form both , , the reason is -------- .

Ans : P has low lying 3d orbits, which can be used for bonding whereas dose not have low lying orbitals

78. In IIIA., TI shows +1 oxidation state while other members show +3 oxidations state .It is due to -------- .

Ans : Inert pair effect.

79. Rate constant for a given reactions is . Average life is represented by -------- .

Ans :