1.
Which of the following
statements are wrong?
(a)
Increase in temperature has no
effect on neutral of pure water.
(b)
Increase in temperature of pure
water decreases its PH.
(c)
Increase in temperature of pure
water decreases its autoprotolysis.
(d)
Increase in temperature of pure
water decreases its ionic product.
(e)
Increase in temperature of pure
water decreases degree of dissociation of water.
(A)
C,d (B)a,b,d (C)a,e
(D)d,e
2.
Select correct statement among
the following
(a)
Work is an intensive property.
(b)
If enthalpy of solution of ions
of A+(g) and B+(g) is greater than |lattice energy| then ΔHsolution of AB(s) is negative.
(c)
ΔSsurrounding <0 condensentation="" for="" of="" revisable="" span="" vapour.="">
(d)
Entropy is a path function.
3.
The shape of [clf4]-
and [clf2]–
ions is respectively
(a)
See-saw and linear.
(b)
See-saw and bent.
(c)
Tetrahedral and linear.
(d)
Square planer and linear.
4.
An ionic crystal AB has
divalent cation A+2 and divalent B2- . If the ionic
radius of A2+ is .70Å and B2- is 1.4 Å, then the expected coordination no. of A2+
is :
(a)
8
(b)
6
(c)
4
(d)
3
5.
Which kind of iosomerism is
exhibited by [Co(EDTA)]-
(a)
Optical and geometrical
isomerism.
(b)
Geometrical isomerism.
(c)
Optical isomerism.
(d)
No isomerism.
6.
The vapour density of N2O4
at certain temperature is69/2. The degree of dissociation of N2O4
is ;
(a)
½
(b)
1/3
(c)
2/3
(d)
1/4
[MORE
THAN ONE CORRECT TYPE QUESTIONS]
7.
Choose the correct angle order.
(a)
Angle of HPH in PH+4
= angle of HCH inCH4.
(b)
Angle of HNH in NH3 <
angle of HPH in PH3.
(c)
Angle of HNH in NH3 <
angle of HPH in PH+4
(d)
Angle of OSO in SO2-3
< angle of ONO in NO-3
8.
In which of the following
processes, does the value of magnetic moment changes?
(a)
CO ->CO+
(b)
N-2-àN+2
(c)
Zn-à Zn2+
(d)
O2--àO-2
[SUBJECTIVE
TYPE QUESTIONS]
9.
If the solubility of BASO4
in 0.4M BaCL4 solution is 1.5*10-x. find the value of X.
10.
The no. of correct statement
(s) about aminoacids are?
(a)
Glycine is amphoteric.
(b)
Glycine is crystalline solid.
(c)
In a strongly acidic medium it
mainly exist in cationic form.
(d)
In a strongly basic medium it
mainly exist in anionic form.
(e)
At isoelectric point of glycine
P1=(Pka1+Pka2)/2.
11.
Find the pH of 0.04M solution
of HOCl. Given Ka=2.5*10-5.
12.
Calculate the amount of (NH4)2SO4
in gram which must be added to 500ml of 0.2M NH3 to yield a solution
of pH=8.26. pk for NH3 =4.74.
13.
From meridional and facial
isomer of [Ma3b3]n±
on replacement of only one ‘a’ by ‘b’, the no. of isomer of the
product obtained are…………………………….and ………………………respectively.
[if answer is 2 and 5 represent as25]
[COMPREHENSION
TYPE QUESTIONS]
Paragraph for
question nos. 14 to 16
The age determination of a
fossil fuel with the help of C-14 is carried out in two different area A &
B. in area A due to nuclear explosion C-14 concentration is increased while in
area B no such nuclear explosion look place. The activity of C-14 in a living
plant of area A is 24 Ci and area B is 24Ci and area B is 12Ci. If the activity
of C-14 in a tomb door is 6 Ci and half life of C-14 is 6000 yrs.
14.
The age of tomb door in area
“A” would be
(a)
6000yrs.
(b)
12000yrs.
(c)
18000yrs.
(d)
24000yrs
15.
The age of tomb door in area
“B’ would be
(a)
6000yrs.
(b)
12000yrs.
(c)
18000yrs.
(d)
24000yrs
16.
The age of tomb door with
respect to area “A” is 6000 yrs greater than the age with respect to area “B”. it is due to
(a)
Increase in temperature of area
“A” due to nuclear explosion.
(b)
Decrease in temperature of area
“A” due to nuclear explosion.
(c)
Increase in activity of C-14 in
living plant in area “A”.
(d)
Decrease in activity of C-14 in
living plant in area “A”.
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