1.
|
The spin only magnetic moment of Mn+4 ion is nearly ______.
(A) 6 BM
(B) 3 BM
(C) 5 BM
(D) 4 BM
|
Answer: (D)
|
2.
|
The standard electrode potential for the half cell
reactions are:
Zn++
+ 2e- ¾¾¾®
Zn E° = - 0.76 V
Fe++
+ 2e- ¾¾¾® Fe E° = -
0.44 V
The E.M.F. of the cell reaction :
Fe++
+ Zn ¾¾¾®
Zn++ +Fe is
(A) +1.20V
(B) +0.32V
(C) -0.32 V
(D) -1.20 V
|
Answer: (B)
|
3.
|
The standard
emf of a galvanic cell involving 3 moles of electrons in its redox reaction
is 0.59 V. The equilibrium constant for the reaction of the cell is ______.
(A) 1020
(B) 1025
(C) l030
(D) 1015
|
Answer: (C)
|
4.
|
The
temperature of the slag zone in the metallurgy of Iron using blast furnace is
(A) 400 -
700 °C
(B) 800 -
1000 °C
(C) 1200 -
1500 °C
(D) 1500 -
1600 °C
|
Answer: (B)
|
5.
|
The total
number of atomic orbitals in fourth energy level of an atom is
(A) 4
(B) 8
(C) 16
(D) 32
|
Answer: (C)
|
6.
|
The value of DH
for the reaction
X2g
+ 4Y2(g) Ý
2XY4(g) is less than zero. Formation of XY4(g)
will be favoured at
(A) High pressure and low temperature
(B) High temperature and high pressure
(C) Low pressure and low temperature
(D) High temperature and low pressure
|
Answer: (A)
|
7.
|
The van't Hoff
factor i for a compound which undergoes dissociation in one solvent and
association in other solvent is respectively
(A) Greater than one and greater than one
(B) Less than one and greater than one
(C) Less than one and less than one
(D) Greater than one and less than one
|
Answer: (D)
|
8.
|
The volume of
10N and 4N HCl required to make 1 litre of 7N HCl are
(A) 0.75 litre of 10N HCl and 0.25 litre of 4N
HCl
(B) 0.80 litre of 10N HCl and 0.20 litre of 4N
HCl
(C) 0.60 litre of 10N HCl and 0.40 litre of 4N
HCl
(D) 0.50 litre of 10N HCl and 0.50 litre of 4N
HCl
|
Answer: (D)
|
9.
|
The wave
number of the spectral line in the emission spectrum of hydrogen will be
equal to times
the Rydberg's constant if the electron jumps from ______.
(A) n = 10 t0 n = 1
(B) n = 3 to n = 1
(C) n = 2 t0 n = 1
(D) n = 9 t0 n = 1
|
Answer: (B)
|
10.
|
There are 20
naturally occurring amino acids. The maximum number of tripeptides that can
be obtained is
(A) 7465
(B) 5360
(C) 8000
(D) 6410
|
Answer: (C)
|
Test Questions - Chemistry Test Questions
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