Further Suggested Practical: Laboratory cracking crude oil
Interactive Video
•
Chemistry
•
11th - 12th Grade
•
Practice Problem
•
Hard
Julie Martin
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the primary purpose of the experiment demonstrated?
To synthesize long-chain alkanes from shorter ones.
To break down long-chain alkanes into shorter-chain alkanes and alkenes.
To test the flammability of various hydrocarbons.
To demonstrate the properties of mineral wool as an absorbent.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the function of the pumice stone or broken plant pot pieces in this experiment?
To absorb excess liquid paraffin.
To act as a heat source for the reaction.
To provide a large surface area for the cracking reaction.
To prevent suckback of water into the boiling tube.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why is it important to remove the delivery tube from the water before stopping the heating of the boiling tube?
To prevent the test tubes from overheating.
To avoid water being sucked back into the hot boiling tube, which could cause it to crack.
To ensure all gaseous products are collected.
To allow the catalyst to cool down slowly.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which chemical is used to test for the presence of alkenes in the collected gas?
Acidified potassium permanganate.
Liquid paraffin.
Mineral wool.
Water.
5.
FILL IN THE BLANKS QUESTION
3 mins • 1 pt
Give an alternative chemical test for the presence of an alkene
(a)
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