GEMP - Test Tubes: Characteristics and Use

Characteristics and Use Introduction Test tubes are essential laboratory tools used extensively in scientific experiments and procedures. They serve as containers for holding, mixing, or heating substances, making them invaluable in chemistry, biology, and various other fields of science.

Quiz Type

Practice

Subject

Chemical Pathology

Level

Level 300

Questions

9 questions

Created By

Premio Quest

Quick Rules

Time limit: 4 minutes
Multiple attempts are not allowed
All questions must be answered to submit

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Question 1 of 9

Question 1

Basic multiple choice Remembering understanding

What is one primary characteristic that distinguishes glass test tubes from plastic test tubes?

Glass test tubes are cheaper than plastic test tubes.

Plastic test tubes are more heat-resistant than glass test tubes.

Glass test tubes are transparent, allowing easy observation of contents.

Correct

Glass test tubes are not suitable for chemical reactions.

Explanation

Glass test tubes are transparent, which allows for easy observation of the contents, while plastic test tubes are generally opaque.

Question 2

Basic multiple choice Remembering understanding

Which of the following is NOT a common use of test tubes in scientific experiments?

Mixing reagents

Conducting titrations

Correct

Heating substances

Culturing cells

Explanation

Conducting titrations usually requires more specialized equipment, while test tubes are commonly used for mixing reagents, heating, and culturing.

Question 3

Basic multiple choice Remembering understanding

Why might some thermally resistant glass test tubes still break under certain conditions?

They are not designed for high temperatures.

Rapid temperature changes can cause thermal stress.

Correct

Glass test tubes cannot handle any chemicals.

They are designed for single-use only.

Explanation

Thermal stress from rapid temperature changes can cause even thermally resistant glass to break, despite its general heat resilience.

Question 4

Basic multiple choice Remembering understanding

Which statement about plastic test tubes is accurate?

Plastic test tubes can be used for any high-temperature application.

Most plastic test tubes can withstand autoclaving.

Plastic test tubes are generally used for low-temperature applications.

Correct

Plastic test tubes are always more expensive than glass test tubes.

Explanation

Plastic test tubes are light and less fragile, making them suitable for low-temperature applications, but they typically cannot withstand autoclaving.

Question 5

Basic multiple choice Remembering understanding

What is the standard range of volumes available for test tubes?

1 mL to 5 mL

10 mL to 100 mL

Correct

50 mL to 200 mL

100 mL to 500 mL

Explanation

Test tubes typically range in volume from about 10 mL to 100 mL, tailored for various laboratory needs.

Question 6

Basic multiple choice Remembering understanding

Which cleaning method is commonly recommended for ensuring test tubes are free from contamination post-experiment?

Wiping with a paper towel

Cleaning with soap and water or autoclaving.

Correct

Rinsing with distilled water only

Soaking in bleach solution without rinsing

Explanation

To ensure test tubes are clean and free from contamination, the recommended methods include washing with soap and water or using autoclaving.

Question 7

Basic multiple choice Remembering understanding

In a biological lab, test tubes might be used to culture which of the following?

Solid metals

Toxic gases

Microbial samples

Correct

Much larger organisms like mammals

Explanation

In biological research, test tubes serve as vessels for culturing microbial samples to study their growth patterns.

Question 8

Basic multiple choice Remembering understanding

What precaution should be taken when handling heated test tubes?

Using bare hands is acceptable.

Wearing gloves and using test tube holders is essential.

Correct

No safety equipment is necessary.

Only goggles should be worn.

Explanation

To prevent burns or spills when handling heated test tubes, it is essential to always wear gloves and use appropriate test tube holders.

Question 9

Basic multiple choice Remembering understanding

What should be done with chemical waste generated from experiments using test tubes?

Dispose of down the sink regardless of substance.

Recycle them with regular plastics.

Handle according to safety guidelines.

Correct

Throw them in the trash if they are small volumes.

Explanation

Chemical waste must be handled according to safety guidelines to ensure proper disposal and environmental safety.