Why is carbon considered an essential element in organic chemistry?

Because organic chemistry is the chemistry of carbon compounds

Because carbon forms only ionic compounds

Because carbon cannot form bonds

What does catenation allow carbon to form?

Long straight chains branched chains and rings

Why can carbon form strong bonds with itself?

Its small size allows short and strong covalent bonds

Class 9 Chemistry · Chapter 11 · Test 7

Carbon and Organic Uses

25 MCQs covering the importance of carbon organic compounds in daily life uses of hydrocarbons methane applications carbon bonding catenation structural formulas and practical uses of organic compounds from Chapter 11.

MCQs

25 questions · 20 min · 25 marks

Want to try first? Take the free Chemistry test: States of Matter Basics

Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
Why is carbon considered an essential element in organic chemistry?
- ABecause organic chemistry is the chemistry of carbon compounds
- BBecause carbon is a noble gas
- CBecause carbon forms only ionic compounds
- DBecause carbon cannot form bonds
Show answerHide answer
Answer: A
Organic chemistry is defined in the source as the chemistry of carbon compounds.
Question 2
Which property of carbon is called catenation?
- ASelf-linking of carbon atoms
- BLoss of neutrons
- CFormation of ionic salts
- DReaction with water
Show answerHide answer
Answer: A
Catenation is the self-linking property of carbon.
Question 3
What does catenation allow carbon to form?
- ALong straight chains branched chains and rings
- BOnly isolated atoms
- COnly ionic crystals
- DOnly metal alloys
Show answerHide answer
Answer: A
Catenation allows carbon to form long straight and branched chains and rings.
Question 4
How many covalent bonds can a carbon atom form?
- AFour
- BOne
- CTwo
- DEight
Show answerHide answer
Answer: A
Carbon forms four covalent bonds.
Question 5
Why can carbon form strong bonds with itself?
- AIts small size allows short and strong covalent bonds
- BIt has metallic bonding
- CIt cannot form covalent bonds
- DIt has no valence electrons
Show answerHide answer
Answer: A
The source explains that the small size of carbon enables it to form short and strong covalent bonds.

More tests in Hydrocarbons

Practise with a free account

Save your scores, see which chapters need work, and keep a notebook of every question you got wrong.

Create free account