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WorksheetsFinal Analytical Chemistry
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
Mathematical statement of Ilkovik euqation is
a)
id= 607n D2 1 m32 t61 C
b)
id= 607n D32 m21 t61 C
c)
id= 706n D2 1 m32 t31 C
d)
Pass
2.
Sensitivity of polarographic estimation can be as low as
a)
10-6M
b)
10-4M
c)
10-3M
d)
Pass
3.
Dissolved oxygen in water can be eliminated using
a)
KCl electrolyte
b)
Triton 100-X
c)
Nitrogen
d)
Pass
4.
Maxima supressor in polarography are
a)
reducing agents
b)
oxydizing agents
c)
surface active agents
d)
Pass
5.
For different reducible species ______ is different
a)
diffusion current
b)
applied potential
c)
half wave potential
d)
Pass
6.
Voltametry corrosponds to measurement of _______
a)
current
b)
voltage
c)
potential
d)
Pass
7.
At limiting current, the concentration of metal ion at DME ____
a)
is euqal to zero
b)
is maximum
c)
at limiting value
d)
Pass
8.
In Ilkovik equation, the term D means
a)
Distribution ratio
b)
Dielectric constant
c)
Diffusion coeffiecient
d)
Pass
9.
Two reducible species in a solution can be estimated by polarography when their half wave potential differ by __
a)
0.2 V
b)
0.4 V
c)
0.02 V
d)
Pass
10.
In amperometric titration, the cathode is
a)
DME
b)
SCE
c)
Pt - wire
d)
Pass
11.
In gas chromatography, SE-30 Silicon gum rubber is used as _____
a)
stationary phase
b)
mobile phase
c)
solid support
d)
Pass
12.
The speed of a component in column depends on _____ of the component with respect to mobile phase
a)
adsorption
b)
partition coefficient
c)
HETP
d)
Pass
13.
Fe+2 and Fe+3 can be separated on ion exchange resin using _____
a)
Potassium dichromate
b)
Salicylic acid
c)
Oxalic acid
d)
Pass
14.
A sample must be absorbing an electron for emplyoing Flame Ionization detector
a)
true
b)
false
c)
Pass
15.
Solid adsorbents like alumina are used in ____
a)
GLC
b)
GSC
c)
Ion exchange chromatography
d)
Pass
16.
To prepare exact concentration of HCl, _____ is poured in an ion exchange resin
a)
Std NaCl
b)
Std KCl
c)
Std HNO3
d)
Pass
17.
R-Cl represents _______
a)
anion exhanger
b)
cation exhanger
c)
mobille phase in GLC
d)
Pass
18.
A weak cation excganger has _____ a functional group
a)
-SO3H
b)
-NH2R
c)
-COOH
d)
Pass
19.
The resin which contains both acidic and basic functional groups is called ______ resin
a)
bipolar
b)
bifunctional
c)
bidentate
d)
Pass
20.
Affinity of an anion towards an exchanger decreases with increase in size of ____
a)
cation
b)
anion
c)
hydrated ion
d)
Pass
21.
Separation of lanthenides and actinides is an application of ____
a)
GSC
b)
GLC
c)
ion exchange chromatography
d)
Pass
22.
Analysis of an automobile exaust is done by using
a)
GSC
b)
GLC
c)
Ion exchange chromatography
d)
Pass
23.
Ultra trace amounts of metals are detected by using ____
a)
ECD
b)
FID
c)
TCD<br />
d)
Pass
24.
Pilot ion method is same as
a)
standard addition method
b)
calibtation method
c)
internal standard method
d)
Pass
25.
Ion exchange capacity of a resin is expressed in terms of ______
a)
miligrams
b)
milimoles
c)
miliequivalent
d)
Pass
26.
_______ milk can be stored without refrigiration for months
a)
UHT
b)
HTST
c)
pasturized
d)
Pass
27.
One of the following is a chemical preservative _______
a)
Saccharine
b)
Malemine
c)
Succinic acid
d)
Pass
28.
Sodium benzoate is a good _____ agent
a)
anti-bacterial
b)
anti-microbial
c)
anti-fungal
d)
Pass
29.
______ method requires sonication
a)
HPLC
b)
HPTLC
c)
adultration
d)
Pass
30.
By depriving the tea leaves from moisture _____ tea is produced
a)
white
b)
black
c)
green
d)
Pass
31.
The process of _______ changes colour of tea leaves from green to copper red<br />
a)
fermentation
b)
withering
c)
drying
d)
Pass
32.
_______ makes the face powder fluffy
a)
Calcium carbonate
b)
Magnesium carbonate
c)
Kaolin
d)
Pass
33.
Bacterial breakdown is caused by _______.
a)
deodarant
b)
antiperspirants
c)
BHT
d)
Pass
34.
Steam injection and evacuation is called as vaceration and not vat pasturization
a)
true
b)
false
c)
Pass
35.
Methyl xanthines are produced in leaves as an defense mechanism against insects
a)
true
b)
false
c)
Pass
36.
Riboflavin in milk is lost rapodly due to exposure to light
a)
true
b)
false
c)
Pass
37.
_______ is a mild CNS stimulant
a)
Tanin
b)
Caffine
c)
Polyphenol
d)
Pass
38.
The highest temperature a TG furnace required to attend
a)
1773 K
b)
1273K
c)
1313K
39.
Copper sulfate gets converted into copper oxide in a temperature range of ______ K
a)
973-1113
b)
473- 548K
c)
671 - 751K
40.
______ is a reference material for organic substances in DTA
a)
octyl pthalate
b)
α - alumina
c)
silicon carbide
41.
In DTA the results obtained in ______ gas atmosphere are more reliable.
a)
static
b)
dynamic
c)
inert
42.
Single pan thermobalence is used in ______
a)
TGA
b)
DTA
c)
DSC
43.
For crystalline polymers, transition occurs at about ____ dgree celcius
a)
200
b)
480
c)
320
44.
Inter-laboratory precision is called as _____
a)
accuracy
b)
repeatability
c)
liniarity
45.
In ___ __ flask temperature of titrant is not affected by environment
a)
thermocool
b)
dewar
c)
refrigirated
46.
Above 1000 degrres celcius, cupric acid transforms to _____
a)
cuprous sulfate
b)
copper hydroxide
c)
cupric oxide
47.
According to DTA,Calcium carbonaate decomposes decomposes to CaO above ______ degree celcius
a)
500
b)
800
c)
740
48.
In DTA, cooling is done by ____
a)
dry ice
b)
liquid nitrogen
c)
liquid ammonia
49.
When magnecium ions react with EDTA, heat is _____
a)
absorbed
b)
evolved
c)
exchanged
50.
Using masking and demasking agents, ____ of EDTA is increased
a)
sensetivity
b)
selectivity
c)
normality
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