CHEM Test 6 (12th) 21-22

Carbon has a valency of +4 because of its

• sp³ hybridization

• sp² hybridization

• sp hybridization

Carbon is a very versatile element because

• it has a low atomic and mass number

• it can bond with almost all elements including itself

• it has a valency of +4

Organic chemistry is the study of

• compounds that carbon can make, in all its forms

• compounds of living beings

• mineral compounds

What is a hydrocarbon?

• Compounds made of carbon, oxygen and nitrogen.

• Compounds made of carbon, oxygen and phosphorus

• Compounds made only of carbon and hydrogen

According to their carbon chain, hydrocarbons can be classified in:

• high and low hydrocarbons

• single, double and triple bonded hydrocarbons

• linear, branched and cyclic hydrocarbons

This is an example of a

• single-bonded hydrocarbon

• double-bonded hydrocarbon

• triple-bonded hydrocarbon

This is an example of a

• Linear hydrocarbon

• Branched hydrocarbon

• Cyclic hydrocarbon

Alkanes are also known as

• Olefines

• Paraffins

• Oil

The prefix PROP is used for

• 2 carbons

• 3 carbons

• 4 carbons

The prefix BUT is used for

• 4 carbons

• 5 carbons

• 2 carbons