MODULE 2

Question 1

what are the classifications of chemicals?

Answer 1

REAGENT GRADE
PRIMARY STANDART GRADE
SPECIAL PURPOSE REAGENT CHEMICAL

Question 2

are generally suited for laboratory and analytical research

Answer 2

REAGENT GRADE

Question 3

acceptable for food, drugs, medicinal use and it is 96-98% pure

Answer 3

REAGENT GRADE

Question 4

should have a high degree of purity

Answer 4

PRIMARY STANDARD GRADE

Question 5

they must be a chemical that has been prepared from very pure materials

Answer 5

PRIMARY STANDART GRADE

Question 6

chemicals that has been prepared for a specific application

Answer 6

SPECIAL PURPOSE REAGENT CHEMICAL

Question 7

used to measure masses with high accuracy

Answer 7

ANALYTICAL BALANCE

Question 8

has a maximum capacity that ranges from 1g to several

Answer 8

ANALYTICAL BALANCE

Question 9

types of analytical balance

Answer 9

MACROBALANCE
SEMIMICRO ANALYTICAL BALANCE
MICROANALYTICAL BALANCE
EQUAL ARM BALANCE
SINGLE PAN ANALYTICAL BALANCE
ELECTRONIC ANALYTICAL BALANCE

Question 10

most common analytical balance

Answer 10

MACROBALANCE

Question 11

maximum loading of 10 to 30 g

Answer 11

SEMIMICRO ANALYTICAL BALANCE

Question 12

maximum load of 1 to 3 g

Answer 12

MICROANALYTICAL BALANCE

Question 13

the simplest and earliest method of weighing

Answer 13

EQUAL ARM BALANCE

Question 14

the speed and convenience of weighing with this balance were vastly superior to what could be realized with the traditional

Answer 14

SINGLE PAN ANALYTICAL BALANCE

Question 15

single pan balance is currently being replaced by this balance

Answer 15

ELECTRONIC ANALYTICAL BALANCE

Question 16

which has neither a beam nor a knife edge

Answer 16

ELECTRONIC ANALYTICAL BALANCE

Question 17

are from convenient for drying and storing solids

Answer 17

WEIGHING BOTTLES

Question 18

less accurate and also used for mass measurement when the demands for reliability are not critical

Answer 18

LABORATORY BALANCE

Question 19

2 pipette classification

Answer 19

CALIBRATION MARKS
DRAINAGE CHARACTERISTICS

Question 20

2 types of calibration marks

Answer 20

TO DELIVER
TO CONTAIN

Question 21

2 types of drainage characteristics

Answer 21

BLOWOUT
SELF DRAINING

Question 22

it deliver exact amount it holds into a container

Answer 22

TO DELIVER

Question 23

it holds the particular volume but does not dispense the exact volume

Answer 23

TO CONTAIN

Question 24

it has a continuous etched rings on top of the pipette

Answer 24

BLOWOUT

Question 25

absence of etched ring and liquid is allowed to drain by gravity

Answer 25

SELF DRAINING

Question 26

2 types of pipette

Answer 26

TRANSFER PIPETTE
MEASURING PIPETTE

Question 27

types of transfer pipette

Answer 27

VOLUMETRIC PIPET
OSTWALD FOLIN
PASTEUR PEIPET
AUTOMATIC MACRO

Question 28

types of measuring pipette

Answer 28

SEROLOGICAL PIPET
MOHR PIPET
BACTERIOLOGICAL PIPET
BALL, KOLMER AND KAHN PIPET

Question 29

for nonviscous fluid and self draining

Answer 29

VOLUMETRIC PIPET

Question 30

for viscous fluid and with etched ring

Answer 30

OSTWALD FOLIN

Question 31

transfer fluid without considering of a specific volume

Answer 31

PASTEUR PIPET

Question 32

with graduations to the tip

Answer 32

SEROLOGICAL PIPET

Question 33

WITHOUT GRADUATION TIP

Answer 33

MOHR PIPET

Question 34

curved surface of a liquid at its interface with the atmosphere

Answer 34

MENISCUS

Question 35

is a condition that causes the volume to appear smaller than its actual value

Answer 35

PARALLAX

Question 36

do not require recalibration

Answer 36

CLASS A PIPETTE

Question 37

calibrating medium for TD PIPETTE

Answer 37

DISTILLED WATER

Question 38

relies on lubricant between the round glass surface of stopcock and barrel for liquid tight seal

Answer 38

GLASS BEAD VALVE

Question 39

unaffected by most common reagents and require no lubricant

Answer 39

TEFLON VALVE