Take this Exam: GCSE Chemistry: Crude Oil and Organic Chemistry | Zestly

Question 1

Why is the process of cracking performed on long-chain hydrocarbon fractions?

Accepted Answer

To produce shorter, more useful molecules like alkenes

Question 2

How can you chemically distinguish an alkene from an alkane in a laboratory setting?

Accepted Answer

By adding bromine water and observing a color change

Question 3

Which of the following statements about alkenes are true?

Accepted Answer

They are unsaturated hydrocarbons

Question 4

What is the primary difference between catalytic cracking and steam cracking?

Answer

Catalytic cracking uses a catalyst, while steam cracking does not

Answer

Steam cracking produces only alkanes

Answer

Catalytic cracking requires much higher temperatures than steam cracking

Answer

Steam cracking is a slow, low-temperature process

Question 5

Which of the following hydrocarbon formulas represents an alkene?

Answer

$C_2H_6$

Answer

$C_3H_8$

Answer

$C_4H_8$

Answer

$C_5H_{12}$