ALIPHATIC HYDROCARBONS

Question 1

Two most important natural sources of alkanes.

Answer 1

Petroleum
Natural gas

Question 2

Petroleum is also known as?

Answer 2

Crude oil

Question 3

It is a complex liquid makes sure of organic compounds (alkanes or cycloalkanes).

Answer 3

Petroleum

Question 4

Often found associated with petroleum deposits, cinsists mainly of methane (about 80%) and ethane (5% to 10%).

Answer 4

Natural gas

Question 5

It is formed from ancient marine organisms

Answer 5

Petroleum (crude oil)

Question 6

Components of gaseous hydrocarbons.

Answer 6

Natural gas

Question 7

Main components of natural gas

Answer 7

Methane (80%)
Ethane (5% to 10%)

Question 8

It is the major constituent of liquified petroleum gas (LPG), a domestic fuel.

Answer 8

Propane

Question 9

It is the gas of choice in some areas.

Answer 9

Butane

Question 10

Butane is much safer than propane?

(True or False)

Answer 10

True. Because of its high boiling point.

Question 11

Boiling point of propane and butane.

Answer 11

Propane (- 42°C)
Butane (- 2°C)

Question 12

Alkanes are soluble/insoluble in water?

Answer 12

Insoluble

Question 13

Alkanes are polar/nonpolar?

Answer 13

nonpolar

Question 14

number of carbons of GAS

Answer 14

C1-C4

Question 15

number of carbons of LIQUID

Answer 15

C5-C17

Question 16

number of carbons of SOLID WAX

Answer 16

≥C18 (greater than or equal 18 carbons)

Question 17

At room temperature, alkanes occur as gases, liquids and solids depending on the number of carbons available in the compounds.