
Organic Chemistry Laboratory Quiz
Quiz
•
others
•
12th Grade
•
Hard
Abdissa Gebisa
FREE Resource
Enhance your content
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is suction filtration (vacuum) preferred to gravity filtration in recrystallization?
It reduces the risk of contamination
It allows for better separation of impurities
It is faster and more efficient
It prevents loss of product due to evaporation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the behavior of a small amount of benzoic acid remaining unmelted even at temperatures above 200oC during a melting point test.
The benzoic acid has a high molecular weight
The benzoic acid is a mixture of different compounds
The benzoic acid has a polymorphic structure
The impurities in the benzoic acid affect its melting point
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the purposes of boiling stones and seed crystals in the recrystallization of solids?
Boiling stones help maintain a constant temperature, while seed crystals initiate crystallization
Boiling stones reduce impurities, while seed crystals improve yield
Boiling stones prevent splattering, while seed crystals provide structural support
Boiling stones increase solubility, while seed crystals enhance purity
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can boiling chips not be reused in laboratory experiments?
They lose their effectiveness after one use
They degrade when exposed to high temperatures
They become contaminated with impurities
They may contain residual solvents
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If 5.0 g of compound 'Y' were to be recrystallized from 75 ml acetone, what will be the maximum amount of 'Y' that will be recrystallized?
4.0 g
3.5 g
3.0 g
4.5 g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of determining melting points?
To calculate density
To identify unknown compounds
To separate mixtures
To measure volume
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why could the rate of heating influence the melting point?
To increase pressure
To slow down the experiment
To speed up the experiment
To avoid decomposition
Create a free account and access millions of resources
Create resources
Host any resource
Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever
or continue with

Microsoft
%20(1).png)
Apple

Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?
Similar Resources on Wayground
11 questions
FINE PRINT: Financial Aid Package
Quiz
•
9th - 12th Grade
10 questions
Investing Quiz- Stocks & Bonds
Quiz
•
12th Grade
14 questions
Weather Patterns Quiz
Quiz
•
3rd Grade - University
10 questions
B1 Exchange Surfaces
Quiz
•
9th - 12th Grade
15 questions
Lng quiz
Quiz
•
2nd Grade - University
13 questions
Storyboard Pro Sample Practice Test A
Quiz
•
9th - 12th Grade
10 questions
Prueba de Conocimientos 3
Quiz
•
12th Grade
11 questions
Constitutional Compromise
Quiz
•
8th Grade - University
Popular Resources on Wayground
20 questions
Brand Labels
Quiz
•
5th - 12th Grade
11 questions
NEASC Extended Advisory
Lesson
•
9th - 12th Grade
10 questions
Ice Breaker Trivia: Food from Around the World
Quiz
•
3rd - 12th Grade
10 questions
Boomer ⚡ Zoomer - Holiday Movies
Quiz
•
KG - University
25 questions
Multiplication Facts
Quiz
•
5th Grade
22 questions
Adding Integers
Quiz
•
6th Grade
10 questions
Multiplication and Division Unknowns
Quiz
•
3rd Grade
20 questions
Multiplying and Dividing Integers
Quiz
•
7th Grade
Discover more resources for others
20 questions
Brand Labels
Quiz
•
5th - 12th Grade
11 questions
NEASC Extended Advisory
Lesson
•
9th - 12th Grade
10 questions
Ice Breaker Trivia: Food from Around the World
Quiz
•
3rd - 12th Grade
10 questions
Boomer ⚡ Zoomer - Holiday Movies
Quiz
•
KG - University
17 questions
Afro Latinos: Una Historia Breve Examen
Quiz
•
9th - 12th Grade
17 questions
Hispanic Heritage Month Trivia
Quiz
•
9th - 12th Grade
28 questions
Ser vs estar
Quiz
•
9th - 12th Grade
15 questions
PRESENTE CONTINUO
Quiz
•
9th - 12th Grade