Class 9 Chemistry · Chapter 11 · Test 2
Preparation of Alkanes
23 MCQs covering cracking of hydrocarbons reduction of alkenes and alkynes hydrogenation nickel catalyst reduction of alkyl halides and the conditions used for preparing alkanes.
23 questions · 20 min · 23 marks
Want to try first? Take the free Chemistry test: States of Matter Basics
Sample questions
The first 5 of 23. Try each one, then tap to see the answer.
Question 1
What is cracking of hydrocarbons?
- ABreaking higher molecular mass hydrocarbons into smaller hydrocarbons
- BJoining small hydrocarbons into larger hydrocarbons
- CConverting alkanes into alcohols
- DConverting hydrocarbons into salts
Show answerHide answer
Answer: A
Cracking breaks higher molecular mass hydrocarbons into smaller hydrocarbons that are more in demand.
Question 2
Why is cracking carried out?
- ATo increase the supply of hydrocarbons that are more in demand
- BTo decrease fuel production
- CTo prepare only methane
- DTo remove all carbon from hydrocarbons
Show answerHide answer
Answer: A
Cracking helps increase the supply of smaller hydrocarbons that are more in demand.
Question 3
At what type of temperature is cracking carried out?
- AHigh temperature
- BVery low temperature
- CRoom temperature
- DFreezing temperature
Show answerHide answer
Answer: A
The source states that cracking is carried out by heating hydrocarbons at high temperature.
Question 4
What is used as a catalyst during cracking of hydrocarbons?
- AZeolite
- BZinc
- CHydrochloric acid
- DChlorine
Show answerHide answer
Answer: A
The source states that naphtha is heated in the presence of zeolite catalyst during cracking.
Question 5
At approximately what temperature is naphtha heated during cracking?
- A500°C
- B100°C
- C200°C
- D50°C
Show answerHide answer
Answer: A
The source states that naphtha is heated at around 500°C in the presence of zeolite.
More tests in Hydrocarbons
- Organic Chemistry and Hydrocarbons
MCQs · 25 questions · 20 min · 25 marks
- Important Reactions of Alkanes
MCQs · 24 questions · 20 min · 24 marks
- Alkane Nomenclature and Properties
MCQs · 25 questions · 20 min · 25 marks
- Hydrocarbons Review
MCQs · 25 questions · 20 min · 25 marks
- Organic Compound Properties
MCQs · 25 questions · 20 min · 25 marks
- Carbon and Organic Uses
MCQs · 25 questions · 20 min · 25 marks
- Alkane Preparation and Reactions
MCQs · 25 questions · 20 min · 25 marks
- Comprehensive Hydrocarbons Review
MCQs · 25 questions · 20 min · 25 marks
- Hydrocarbons Full Test
MCQs · 25 questions · 20 min · 25 marks
Practise with a free account
Save your scores, see which chapters need work, and keep a notebook of every question you got wrong.