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Introduction to Organic Chemistry

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

Hydrocarbons that contain a delocalized ring of π-bonds such as benzene ring are called ___________ hydrocarbons.

a)

aromatic

b)

aliphatic

c)

organic

d)

cyclo

2.

Aliphatic hydrocarbons consist only single bonds, and so are called ____________ hydrocarbons.

a)

unsaturated

b)

saturated

c)

aromatic

d)

chain

3.

____________ groups are atoms, groups of atoms or bond that determine the characteristic of an organic compound.

a)

Aliphatic

b)

Aromatic

c)

Functional

d)

Hydrocarbon

4.

How many carbon atoms are in propane?

a)

1

b)

2

c)

3

d)

4

5.

__________ series is a series of compounds with same functional group differing from the successive member by CH2.

a)

Heterologous

b)

Homologous

c)

Hydrocarbon

d)

Group

6.

In organic chemistry, molecular and ____________ formulas were used to express what a particular molecule consists of.

a)

structural

b)

organic

c)

chemical

d)

physical

7.

__________ structural formula are written without showing all the individual bonds. In a condensed structure, each central atom is shown together with the atoms that are bonded to it

a)

Molecular

b)

Condensed

c)

Expanded

d)

Skeletal

8.

In order to show how the atoms are connected, structural formulas such as __________ , __________ and _________ structures are used.

a)

expanded, condensed, skeletal

b)

expanded, condensed, molecular

c)

hydrocarbon, expanded, skeletal

d)

molecular, condensed, skeletal

9.

Two main types of isomers are the __________ (structural) isomers and ____________.

a)

stereoisomers, optical

b)

constitutional, optical

c)

constitutional, stereoisomers

d)

enantiomers, stereoisomers

10.

Isomers are molecules that have the _________molecular formula (contain the same number of atoms) but ______ structurally (having different arrangement of the atoms in space).

a)

differ, differ

b)

same, differ

c)

same, same

d)

differ, same

11.

Three types of constitutional isomers are _______ isomers, _________ isomers and ___________ isomers.

a)

chain, position, functional group

b)

chain, optical, functional group

c)

stereoisomers, position, functional group

d)

chain, position, enantiomers

12.

For alkanes, only ________ isomers is possible.

a)

functional group

b)

chain

c)

position

d)

optical

13.

Compounds with different functional group but similar molecular formula can have _____________ group isomers.

a)

chain

b)

position

c)

functional

d)

optical

14.

_____________ isomers occur when the types, number and bonds (connectivity) of the atoms are the same, but have a restricted rotation somewhere in a molecule. The common example is the double bond.

a)

Optical

b)

Chain

c)

Geometric

d)

Position

15.

Only _________ molecules have optical isomers.

a)

achiral

b)

chiral

c)

hybrid

d)

hydrocarbon

16.

The carbon atom with the four different groups attached which causes the lack of symmetry is described as a _________ centre.

a)

chiral

b)

achiral

c)

carbon

d)

atom

17.

Two ______________ are non-superimposable mirror image of one another (chiral).

a)

enantiomer

b)

isomer

c)

non-enantiomer

d)

geometric

18.

Carbon atoms can be classified by the _____________ of other carbon atoms that are directly attached to it.

a)

number

b)

type

c)

structure

d)

isomer

19.

Tertiary hydrogen connected to __________ carbon.

a)

tertiary

b)

primary

c)

secondary

d)

quarternary

20.

There is no ___________ hydrogen due to limited bonding of carbon atom to just four.

a)

primary

b)

secondary

c)

quaternary

d)

tertiary