61. The number of moles of
PH3 formed when 2.5 moles of Ca3P2 reacts with excess of water will be
(1) 4 (2) 5
(3) 6 (4) 8
62. The concentration of ion, when 150 ml of 0.2
M BaCl2 reacts with 300 ml of 0.3 M H2SO4,
is
(1) 0.13
M (2) 0.31 M
(3) 0.52
M (4) 0.2 M
63. A mixture of Na2CO3 and
MgCO3 weighing 30 g was heated till constant weight.
The volume of CO2 evolved was found to be 5.6 L at STP. The
percentage of Na2CO3 in the
mixture is (Given : At. wt. of Na = 23, Mg = 24, C = 12, O = 16)
(1) 65
% (2) 48 %
(3) 70
% (4) 30 %
64. The equivalent weight of H3PO3 when it reacts with NaOH can be (At. wt. of P
= 31)
(1) 82 (2) 41
(3) 27.3 (4) Both (1) and (2)
65. Mole fraction of sucrose in aqueous solution
is 0.1. The molality of the solution is
(1) 6.17
M (2) 12.34 M
(3) 9.58
M (4) Cannot be calculated
66. Gay Lussac's law is not applicable to
(1) N2(g) + 2O2(g)
¾®
2NO2(g)
(2) PCl5(g) ¾® PCl3(g) + Cl2(g)
(3) HCl(aq.)
+ NaOH(aq.) ¾®
NaCl(aq.) + H2O
(4) Both
(1) and (2)
67. The
highest electrical conducitivity of the following aqeous solution is of -
(1)
0.1 M fluoroacetic acid (2) 0.1 M
difluoroacetic acid
(3)
0.1 M acetic acid (4)
0.1 M cholroacetic acid
68. The number of radial nodes are found to be
equal in
(1) 3p
and 4d (2) 4p and 5f
(3) 2p
and 4p (4) Both (1) and (2)
69. Maximum screening effect is shown by the
electrons present in
(1) 3
s
(2) 4
s
(3) 5
s
(4) All
will show same screening effect
70. The ratio of half the number of electrons
present in l = 3, n = 4 to l = 2, n = 5 is
(1) 7
: 1 (2) 14 : 3
(3) 3
: 1 (4) 7 : 5
71. Which of the
following KCl solution has lowest value of specific conductance-
(1)
1 M (2)
0.1 M (3) 0.01 M (4) 0.001 M
72. Most covalent halide is
(1) NaCl (2) KCl
(3) CuCl (4) CuCl2
73. Electron gain enthalpy is least negative for
(1) S (2) Se
(3) Li (4) Na
74. Neutral oxide is/are
(1) CO (2) N2O
(3) BeO (4) Both (1) and (2)
75. Which of the following is/are non-planar?
(1) NF3 (2) N(CH3)3
(3) N(SiH3)3 (4) Both (1) and (2)
76 On passing one
Faraday of electricity through a dilute solution of an acid, the volume of
hydrogen obtained at N.T.P. is :
(1)
22400 ml. (2) 1120 ml.
(3)
2240 ml. (4)
11200 ml.
77. In
PCl5 the d-orbital involved in hybridisation
is
(1) dxy (2) dyz
(3) (4) dxz
78. Bond
length is shortest in
(1) H2 (2) H2+
(3) H2– (4) He2+
79 Which of the following solutions has the
highest equivalent conductance ?
(1)
0.01M NaCl (2) 0.050
M NaCl
(3)
0.005M NaCl (4) 0.02M
NaCl
80. Bond
order in H2O2 is
(1) 2 (2) 1
(3) 3 (4)
81. The
nodal plane in the p bond of ethene is located in
(1) The molecular plane
(2) A plane parallel to the molecular plane
(3) A plane perpendicular to the molecular plane
which bisects the carbon-carbon s bond at right angle
(4) A plane perpendicular to the molecular plane
which contains the carbon-carbon s bond.
82. Bent
shape is shown by
(1) SO2 (2) XeF2
(3) NO2 (4) Both (1) and (3)
83. Which
of the following pairs of species are not isostructural?
(1) BF3
and ClF3 (2) BeCl2 and SnCl2
(3) SF4 and SiF4 (4) All
of these
84. A
system absorbs 80 kJ of heat at constant volume and its temperature increased
from 30°C to 40°C. DU of the reaction is
(1) 80 kJ (2) 160 kJ
(3) 10 kJ (4) 40 kJ
85. Which
of the following is an extensive property?
(1) Gibbs free energy (2) Number of moles
(3) Mass (4) All of these
86. Cp > Cv is
most predominantly valid for
(1) Liquids (2) Gases
(3) Solids (4) Ionic compounds
87. DG° for the reaction?
(1) –26.5 kJ mol–1 (2) –11.5
kJ mol–1
(3) –2.2 kJ mol–1 (4) –0.97
kJ mol–1
88. Two
moles of an ideal gas is expanded isothermally and reversibly from 1 L to 10 L
at 300 K. The enthalpy change for the process (in kJ) is
(1) –11.4 kJ (2) 11.4 kJ
(3) 4.8 kJ (4) Zero
89. If
the enthalpy change for the transition of liquid water to steam is 30 kJ mol–1. The entropy change for the process would be
(1) 0.080 kJ mol–1k–1 (2) 200 J mol–1k–1
(3) 0.030 kJ mol–1k–1 (4) 10 J mol–1k–1
90. The
incorrect statement according to Maxwell distribution of molecular speeds for
gases is/are
(1) Fraction of molecules with very high speeds is
low.
(2) No molecule has zero velocity
(3) Fraction of molecules with most probable speed
increases with increase in temperature
(4) All are correct
91. The
value of van der Waal’s constant 'a' is maximum for
(1) O2 (2) NH3
(3) H2 (4) He
92. K.E.
of 1 g of O2 at 47°C is
(1) 2.24 × 102 J (2) 2.95 × 103 J
(3) 1.24 × 102 J (4) 3.74 × 104 J
93. Which of the following solution can act as
buffer solution?
(1)CH3COONH4
(2)CH3COOH +CH3COONa
(3)HCOONH4
(4) All
of these
94. Solubility of NH4Cl is maximum in
(1) 0.5
M HCl (2) 1 M NH4OH
(3) Pure
water (4) 0.1 M KCl
95. A solution with pH = 2 is more acidic than
one with a pH = 6 by a factor of
(1)
4000 (2) 2
(3) 10000 (4) 8000
96. Normality of H+ in the solution when 200 ml of
0.5 M HCl solution is mixed with 150 ml of 0.2 M NaOH solution, is
0.5 M HCl solution is mixed with 150 ml of 0.2 M NaOH solution, is
(1) 0.2
N (2) 0.1 N
(3) 0.3
N (4) 0.4 N
97. [H+]
ion concentration in an aqueous solution at 50°C was found to be 10–8 M. The
solution is
(1) Acidic (2) Basic
(3) Neutral (4) Data insufficient
98. What is the expression for ksp of
PbCl2?
(1) [Pb2+] [2Cl–]2 (2) [Pb2+]
[2Cl–]
(3) [Pb2+] [Cl–]2 (4) [Pb2+]/[Cl–]
99. Common ion effect is shown in
(1) HCl
+ NaCl (2) HCN + NaCN
(3) HCl
+ CH3COOH (4) Both
(2) and (3)
100. Surface tension of a liquid is independent of
(1) Amount
of liquid (2) Temperature
(3) Nature
of liquid (4) Both (1) and (2)
No comments:
Post a Comment