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Chemistry Testbank

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

  1. It is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level.

a)

Molecular Theory

b)

Valence Bond Theory

c)

Quantum Theory

d)

Abegg’s Rule

2.

  1. Which of following choices below is right for the given alkane structure?

a)

4-Propylheptane

b)

4-Methylheptane

c)

4-Methylhexane

d)

4-Ethylheptane

3.

Branch of chemistry that deals with compounds of carbon

a)

Inorganic chemistry

b)

Organic chemistry

c)

Analytical chemistry

d)

 Biochemistry

4.

  1. A hydrocarbon with triple bonds is called an _____

a)

 Alkene 

b)

Alkyne

c)

Alkane

d)

Alkali

5.

  1. The IUPAC name of CH3CHO is

a)

Ethanal

b)

Acetaldehyde

c)

Ethanol

d)

Acetone

6.

In the alkene series, each molecule contains?

a)

Only one double bond

b)

  1. All single bonds

c)

  1. Two double bonds

d)

  1. One triple bonds 

7.

Who classified the known elements into eight groups?

a)

John Newlands

b)

Dmitri Mendeleev Beguyer

c)

Alexandre-emile

d)

Erwin Schrodinger

8.

The general formula for _______ is CₙH₂ₙ₊₂, where n represents the number of carbon atoms in the compound.

a)

Alkenes

b)

Cycloalkanes

c)

Alkanes

d)

Alkynes

9.

What is the name of alkane C7H16?

a)

  1. Hexane

b)

  2. Octane 

c)

  2. Heptane 

d)

  1. Decane 

10.

Which of the ff is the condensed structural formula of Pentane?

a)

CH3CH3

b)

CH3(CH2)2CH3

c)

  1. CH3(CH2)3CH3

d)

  1. CH3(CH2)10CH3

11.

Choose the structure of diethyl ether

a)

b)

c)

d)

12.

In the homologous series of alkanes, what is the molecular formula for the member just above C8H18?

a)

  1. C9H20

b)

  2. C12H26

c)

  1.  

  2. C9H20

d)

  2. C5H12

13.

A simplified structure in which each intersection between two lines is assumed to have a carbon atom with its corresponding number of hydrogens.

a)

skeletal structure

b)

Complete Structure

c)

  1. Bond line Structure

d)

condensed structure

14.

  1. Alkanes containing a methyl group on main chain at 2nd carbon are called

a)

Iso-alkane

b)

Normal-alkane

c)

Neo-alkane   

d)

Branched-alkane

15.

Name the structure.

a)

chlorocyclopentane or 1-chlorocyclopentane

b)

trans-1-chloro-2-methylcycloheptane

c)

cyclodecane

d)

  1. 1-cyclobutyl-4-isopropylcyclohexane

16.

Which of the following is the correct condensed structural formula of butane?

a)

  1. CH3(CH2)3CH3

b)

  2. CH3(CH2)2CH3

c)

  1. (CH3)3CH2

d)

  1.  C4H10

17.

What type of alkyl groups has a classification of a carbon in the middle of a chain


a)

Primary alkyl group

b)

Secondary alkyl group

c)

Tertiary alkyl group

d)

Quaternary alkyl group

18.

Which among these is not a structural isomer of the compound C4H8?


a)

But-1-ene


b)

But-2-ene

c)

But-3-ene

d)

2-methylpropene

19.

A type of compounds where carbon atoms have doubled or triple bonds?


a)

  1. Saturated compound 

b)

  2. Supersaturated

c)

  1. Unsaturated compound 

d)

  1. Simple compound 

20.

Alkanes are hydrocarbons, as they only contain the elements hydrogen and carbon. What is the name of the simplest alkane?

a)

Ethane


b)

 Methane

c)

Propane

d)

Butane

21.

What would be best to use in making dishwasher safe food containers?


a)

  1. Low density polyethylene

b)

  1. High density polyethylene

c)

  1. Poly(propene)

d)

Poly(ethene)

22.

What is the primary function of an acid catalyzed hydration?


a)

  1. To remove single bonds with the help of water 

b)

  1. To transform unsaturated compounds to saturated ones 

c)

  1. To add triple bonds with the help of an acid catalyst 

d)

  1. To transfer electrons to a carbon atom making it a carbocation

23.

The general formula for alkenes is ___

a)

CnH2n+2

b)

C2nH2n

c)

CnHn+2

d)

CnH2n-2

24.

Which of these molecules is saturated

a)

C3H8

b)

CH3OH

c)

C5H10

d)

CH4

25.

Which one of these hydrocarbons does not have isomers?

a)

C7H16

b)

C6H14

c)

C3H8

d)

C5H10

26.

How many structural isomers are there of C4H10?

a)

4

b)

6

c)

2

d)

8

27.

The compound that has a double bond between one pair of carbon atoms is called a/an...

a)

Alkane

b)

chlorofluorocarbon

c)

alkyne

d)

alkene

e)

alcohol

28.

The reaction of ethylene and water yields

a)

aldehyde

b)

Ester

c)

Alcohol

d)

Ether

29.

Oxidation of the 2-propanol will produce a/an

a)

aldehyde

b)

Amine

c)

Carboxylic acid

d)

Ketone

30.

The reaction of an alcohol and a carboxylic acid yields

a)

hydrocarbon

b)

ester

c)

ether

d)

aldehyde

31.

Which is the product of the reaction of one mole of HCl with one mole of 1-butyne?

a)

1-chloro-1-butene

b)

1-chloro-2-butene

c)

2-chloro-1-butene

d)

ethyl chloride + acetylene

32.

Organic compounds with the general formula R-O-R (where R is an alkyl group) are called

A. .

B. alcohols.

c. ethers.

D. aldehydes.

E. organic acid

a)

alkenes

b)

ether

c)

Ester

d)

Aldehyde

33.

Esters are synthesized from two classes of organic compounds. Those two types of compounds are

a)

acids and bases

b)

amines and alcohols

c)

alkenes and bases

d)

alcohols and acids

34.

Which element is present in all organic compounds?

a)

Hydrogen

b)

Carbon

c)

Helip

d)

Oxygen

35.

_____ are any of a class of often fragrant compounds that can be represented by the formula RCOOR′

a)

Ether

b)

Ester

c)

Aldehyde

d)

Ketone

36.

Which formula represents heptane?

a)

CH3CH2CH2CH2CH2CH2CH3

b)

CH3CH2CH2CH2CH3

c)

CH3(CH2)6CH3

d)

CH3CH2CH3

37.

Many of the organic reactions involve radicals. The addition of a halogen to a   saturated hydrocarbon involves a free radical mechanism

a)

  1. Substitution reaction

b)

  1. Additive reaction

c)

  2. Elimination reactions

d)

  1. Radical reaction

38.

Which of the following is the molecular formula for acetylene?

a)
CH4
b)

C2H4

c)
C2H2
d)

C2H6

39.

Benzene is aromatic because it follows

a)
Huckel's rule
b)

  1. Aromaticity conditions

c)

  1. 4n pi electron rule

d)
Boyle's law
40.

Which mechanism takes place in the Wurtz reaction?

a)
Coupling of two alkyl halides
b)
Oxidation of alcohols
c)
Hydrolysis of esters
d)
Decarboxylation of carboxylic acids

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