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CHEM > Chem Lab Prelims > Flashcards

Chem Lab Prelims Flashcards

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1
Q

Reaction time of chemicals through eye contact

A

10 seconds

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2
Q

Most appropriate absorptive material for spilled flammable liquid

A

Charcoal

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3
Q

MSDS

A

Material safely data sheet

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4
Q

A document that gives comprehensive information about chemical

A

Material safely data sheet

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5
Q

Appropriate laboratory attire

A
  1. Wear proper personal protective equipment (PPE).
  2. Do not wear shorts, leggings, or miniskirts.
  3. Do not wear high-heeled shoes, open-toed shoes, sandals, or shoes made of woven materials.
  4. Confine long hair and loose clothing.
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6
Q

GHS

A

Global harmonized system of classification and labeling chemicals

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7
Q

A standard assigned to a hazard class and category to describe the nature and serving of a chemical hazard

A

GHS

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8
Q

In fire extinguishers, PASS means

A

P- pull the locking pin
A- aim for the base of the fire
S- squeeze and hold the discharge lever
S- sweep from side to side

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9
Q

Prerequisite for fire

A

Fire, oxygen, fuel

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10
Q

Fire safety: ordinary combustion

A

Class A

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11
Q

Fire safety: flammable liquid

A

Class B

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12
Q

Fire safety: Electrical Equipment

A

Fire safety: Class C

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13
Q

Fire safety: Combustible Metals

A

Class D

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14
Q

Fire safety: Kitchen Fire

A

Class K

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15
Q

Fire safety: dry chemicals

A

Class ABC

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16
Q

Fire safety: aqueous film form foam

A

Water based Class A and B only

17
Q

Fire safety: carbon dioxide

A

Class B

18
Q

Fire safety: water

A

Class AB

19
Q

Can be use in cleaning non polar chemicals

A

Acetone

20
Q

Needed when in drastic cleaning

A

Chromatic acid

21
Q

Transfer accurate volume of liquid

A

Transfer pipet

22
Q

Most accurate type of pipet

A

Volumetric pipet

23
Q

Volumetric pipets are more accurate than the serological pipet

A

True

24
Q

A precisely manufactured glass tube with graduation, enabling the measurement of liquid delivered through the bottom

A

Burets

25
Q

Type of buret that has glass stopcock

A

Acid buret

26
Q

Type of buret that has rubber tubing with pinchcock

A

Base buret

27
Q

Used for precisely measure of the mass of an object

A

Analytical balance

28
Q

Type of analytical balance that has a maximum capacity of 160g - 200g

A

Macro analytical balance

29
Q

Type of analytical balance that has a maximum capacity of 10g-35g

A

Semi analytical

30
Q

Type of analytical balance that has a maximum capacity of 1g - g

A

Microanalytical

31
Q

Removes moisture from solids

A

Desiccator

32
Q

Based on the duration of radiation of the cesium- 133 atom

A

Time

CHEM (7 decks)

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