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pmqa Flashcards

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1
Q

remove stain of potassium permanganate

A

oxalic acid

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1
Q

non-aqueous titrant ?

A

perchloric acid

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2
Q

whiten ash in ash content determination and determine residue on ignition

A

sulfuric acid

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3
Q

degree of alcohol in specific gravity using pycnometer

A

15.56

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4
Q

determines hardness of water, uses chelating agent EDTA

A

complexation reaction

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5
Q

remove alcohol-driven compounds

A

loss on drying

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6
Q

excess emission ex. vit b1, b2, phosphorus

A

fluorometric emission

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7
Q

assay method for assay of methadione

A

cerimetry

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8
Q

2 ex of electrochemical method

A
  • voltammetry
  • potentiometry
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9
Q

voltage of ion compounds, uses pH meter

A

potentiometry

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10
Q

uses polarography

A

voltammetry

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11
Q

measurement of light in visible region

A

colorimetry

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12
Q

ex is atomic absorption spectrophotometry

A

flame emission or flame photometry

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13
Q

assay for fixed oils or wax

A

biological assay

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14
Q

3D figure of molecules

A

NMR absorption

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15
Q

instrument for optical rotation

A

polarimeter

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16
Q

bending of light, uses refractometer

A

refraction of light

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17
Q

dissolution temp

A

37±0.5

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18
Q

disintegration temp

A

37±2

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19
Q

tumbling machine

A

friability

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20
Q

no of samples for content uniformity

A

10, 90-120 average

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21
Q

no of samples for weight uniformity

A

20, NMT 2%

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22
Q

aka lover’s ink

A

cobalt chloride

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23
Q

color of cobalt chloride when dry

A

blue

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24
color of cobalt chloride when wet
pink
25
stoke's monsanto SL, C
4-10 kg
26
stoke's monsanto PUT
2-3 kg
27
stoke's monsanto B
8-10 kg
28
disintegration PUT
NMT 30 mins
29
disintegration SL, C
3 mins
30
disintegration B
4 hrs
31
disintegration E
5 mins
32
disintegration SGF
1 hour
33
disintegration SIF
1 hour or varies
34
suitable for magmas and gelatinous product
decantation
35
2 principles of molecular aggregation
- precipitation - crystallization
36
increasing concentration of solute
supersaturation
37
finely divided, separation done without filter
clarification
38
done with filter, not prism
colorimetry
39
extremely large
cotton filter
40
highly reactive
glass wool
41
jena glass
sintered-glass
42
evaporation of solvent from a solution or cooling solution
supersaturation
43
atomization of solid or 1 or more solids
spray drying
44
1 1/2 to 60 inches diameter
coarse crusher
45
used in mineral crushing industry
coarse crusher
46
20-200 mesh
intermediate grinders
47
pass through 200 mesh
fine grinding mills
48
3 broad categories of comminution
- coarse crusher - intermediate grinders - fine grinding mills
49
3 basic actions of comminution
- attrition - rolling - impact
50
same direction, different rate of speed
roller mills
51
provides particle size reduction mainly through compression crushing and shear
roller mills
52
enclosed with a chamber containing a grid, on the upper part is the feed hopper
hammer mills
53
rotating seive
centrifugal-impact mills and seives
54
the mill consists of a nonrotating bar or stator that is fixed within a rotating sieve basket
centrifugal-impact mills and seives
55
reduce particle size of fibrous materials
cutter mills
56
horizontal rotor
cutter mills
57
nonrotating bar or stator
centrifugal-impact mills and seives
58
2 stones or steel grinding plates
attrition mill
59
these mills are most suitable for friable or medium-hard, free-flowing material
attrition mills
60
2 heavy granite stones, results into fine powder
chaser mills
61
produces pulverization with a minimum loss of material
pebble or ball mills
62
other names for pebble or ball mills
pot mill or jar mill
63
principle of pebble or ball mills
attrition and impact
64
the shell is vibrated at some at some suitable frequency, rather than rotated
vibrating ball mills
65
used for pulverizing and classifying extremely small particles of many materials
fluid-energy mills
66
the material to be pulverized is swept into violent turbulence by the sonic and supersonic velocity of the streams
fluid-energy mills
67
size reduction of heat-sensitive substances
centrifugal-impact pulverizes
68
effective for the reduction of the particle size of a wide variety of materials ranging from very soft, organic chemicals to hard, abrasive minerals
centrifugal-impact pulverizes

huy (8 decks)

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