Test yourself with these sample questions

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You should AVERAGE answering each question in less than 100 seconds for this exam Note: All of the following questions contain only one best answer. Circle the letter that best corresponds with the question.

TEST

1	When diluting acids with reagent water
	a.		and water to acid
	b.		add acid to water
	c.		pour simultaneously into beaker
	d.		setup remote titration

2	The correct procedure for removing contaminated gloves is to
	a.		wash/rinse the gloves before removal, then wash hands after removing gloves
	b.		only wash hands after removing gloves
	c.		only wash gloves before removing
	d.		remove gloves, discard and wash hands only if you touched the contaminated part of the gloves

3	Which of the following is NOT part of the correct steps to insert glass tubing into a rubber stopper?
	a.		Wear gloves to protect your hands in case the tubing breaks
	b.		Hold the glass tubing as close to the rubber stopper as possible
	c.		Lubricate the glass with water
	d.		Lubricate the glass with lab grade silicone grease

4	Dispose cracked or broken glassware
	a.		in waste receptacle after wrapping in paper
	b.		after washing to remove gross contaminates
	c.		both a and b
	d.		in waste bins marked specifically for glass disposal

5	Laboratory fume hoods are used primarily for
	a.		hazardous chemical storage
	b.		containment and venting during use of hazardous chemicals
	c.		odor removal
	d.		all of the above

6	Flammable solvents should be stored
	a.		in properly vented cabinets approved by the NFPA
	b.		under the laboratory fume hood
	c.		in a safety refrigerator
	d.		either a or c

7	Routine laboratory PPE, personal protective equipment includes
	a.		safety steel toed boots and safety hard hats
	b.		self contained breathing apparatus
	c.		safety eye wear, gloves, chemically resistant aprons
	d.		disposable fire retardant clothing

8	MSDS is an acronym for
	a.		Material Storage Data System
	b.		Management Safety Data System
	c.		Maintenance and Safety Data Storage
	d.		Material Safety Data Sheet

9	chipped glassware
	a.		may be used if the chipped area is fire polished to remove sharp edges
	b.		should never be used
	c.		may be used while wearing tough gloves
	d.		must be discarded immediately

10	Which of the following is required by law?
	a.		A MSDS must come with all chemical purchases
	b.		Employees have access to MSDSs for all chemicals they may potentially contact
	c.		Treatment facilities conduct neighborhood training sessions on how to read a MSDS
	d.		both a and b

11	Compressed gas cylinders should be stored
	a.		outside the laboratory building
	b.		capped and secured to prevent tipping or rolling
	c.		horizontally to prevent tipping over
	d.		in a designated chemical storage area

12	If a hexane fire occurred which type of extinguisher would you use
	a.		Class A
	b.		Class B
	c.		Class C
	d.		Class D

13	In the event of a chemical splash in the eyes, gently flush the eyes for a minimum of
	a.		5 minutes
	b.		10 minutes
	c.		15 minutes
	d.		30 minutes

14	Which of the following applies to the storage of acids and bases?
	a.		Store in well-ventilated flammable cabinets
	b.		Separate acids from bases in well-ventilated areas and away from volatile organic and oxidizable materials
	c.		No special storage instructions
	d.		Store only in specially designed cabinets designated for hazardous materials

15	One waterborne disease believed to be caused by a virus is
	a.		cholera
	b.		dysentery
	c.		hepatitis
	d.		tuberculosis

16	The laboratory uses many organic chemicals including freon, MEK, phenols and organophosphates. Most organics can be absorbed through skin, and through prolonged exposure, lead to possible damage to the central nervous system. Working with these chemicals include the following protective measures:
	a.		Skin protection
	b.		Good ventilation
	c.		Thorough washing of hands after handling .
	d.		All of the above.

17	To treat chemical burns you should use what?
	a.		Sodium bicarbonate
	b.		Salve or antiseptic ointment
	c.		Large quantities of water
	d.		All of the above

18	Which of the following are corrosive chemicals?
	a.		Sulfuric Acid, Sodium Hydroxide
	b.		Potassium Hydroxide, Petroleum Ether
	c.		Carbon Disulfide, Carbon Tetrachloride
	d.		Hydrogen Peroxide, ETD

19	If you had an electrical fire which type of extinguisher would you use?
	a.		Class A
	b.		Class B
	c.		Class C
	d.		Class D

20	Which poisonous gas is commonly found in raw wastewater and has a rotten egg odor?
	a.		Carbon dioxide
	b.		Methane
	c.		Hydrogen sulfide
	d.		Chloride

21	Flammable solvents are liquids with
	a.		a flash point above 60 °C
	b.		a vapor pressure >275 kPa atmospheric at 38 °C
	c.		a flash point <  60 °C
	d.		both b and c

22	Properly functioning laboratory fume hoods should obtain an air flow of _____ when the sash is partially closed
	a.		90 m3/min
	b.		60 m3/min
	c.		30 m3/min
	d.		10 m3/min

23	The following type of glove is suitable to wear when performing solvent extractions on samples in the lab.
	a.		cotton
	b.		Nylon
	c.		Nitrile
	d.		Latex

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