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Chemistry Quarter-4 Test

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.

Carboxylic acid on reaction with LiAlH4 are reduced to ____

a)

Alcohol

b)

Ketone

c)

Alkane

d)

Ester

2.

Reaction of CH3COOH with PCl5 is an example of _____ reaction

a)

Electrophilic substitution

b)

Electrophilic addition

c)

Nucleophilic substitution

d)

Nucleophilic addition

3.

An aqueous solution of an organic compound reacts with sodium carbonate to produce carbon dioxide gas. Which one of the following could be the organic compound?

a)

CH2=CH-CH3

b)

CH3-CHO

c)

CH3COOC2H5

d)

CH3-CH2-COOH

4.

Acetic acid can be produced by the reaction of "A" with CH3Cl followed by acid hydrolysis. The "A" is

a)

ClCN

b)

KCN

c)

KCl

d)

NH3

5.

Which of the following is not a fatty acid

a)

Palmitic acid

b)

Stearic acid

c)

Butanoic acid

d)

Oxalic acid

6.

The reaction of carboxylic acid in which hydrogen atom of carboxyl group is involved

a)

Reaction with PCl5

b)

Reaction with C2H5OH

c)

Reaction with NH3

d)

Reaction with Na metal

7.

Which of the following is strongest acid

a)

Butanoic acid

b)

Methanoic acid

c)

Ethanoic acid

d)

Propanoic acid

8.

Which of the following is the weakest acid?

a)

Bromoacetic acid

b)

Chloroacetic acid

c)

Acetic acid

d)

Fluoroacetic acid

9.

How many grams of sodium metal are used with ethanoic acid to form one mole of H2 gas

a)

23

b)

46

c)

24

d)

12

10.

Propanoic acid on reduction with HI and red phosphorus gives

a)

Ethanal

b)

Propane

c)

Ethane

d)

Propene

11.

The number of carbon atoms involved in a dimer molecule of acetic acid are

a)

2

b)

3

c)

4

d)

5

12.

Which of the following derivative of carboxylic acid is more reactive

a)

Acetamide

b)

Ethyl acetate

c)

Acetic anhydride

d)

Acetyl chloride

13.

Which of the following reagent reacts with both aldehydes and ketones

a)

Tollen’s reagent

b)

Fehling’ solution

c)

Benedict’ solution

d)

Grignard reagent

14.

Iodoform test will not be positive with

a)
b)
c)

d)
15.

What is the structure of alcohol which on oxidation with acidified Na2Cr2O7 gives C6H5-CO-CH3.

a)

b)

c)

d)

16.

Which one of the following reagents is used to distinguish between aldehydes andketones?

a)

Tollen’s reagent

b)

Bromine

c)

2,4-DNPH

d)

Alkaline iodine

17.

The cyanobydrin of which carbonyl compound gives lactic acid on acidic hydrolysis

a)

Methanal

b)

Propanol

c)

Propanone

d)

Ethanal

18.

Aldehyde and ketone react with hydroxylamine to form ________

a)

Hydrazone

b)

Acetal

c)

Oxonium ion

d)

Oxime

19.

Which of the following is most reactive

a)

C6H5CHO

b)

HCHO

c)

CH3CHO

d)

CH3CH2CHO

20.

Which of the following does not react with 2,4-dinitrophenyl hydrazine

a)

Ethanol

b)

Acetone

c)

Ethanal

d)

Methanal

21.

Which of the following is not carbocyclic compound

a)

Cyclopropane

b)

Naphthalene

c)

Anthracene

d)

Furan

22.

Cycloalkanes are represented by general formula

a)

CnH2n+2

b)

CnH2n

c)

CnH2n-2

d)

CnHn

23.

Organic polar mechanisms generally involve nucleophiles and electrophiles. Which of the following statement is incorrect?

a)

It is not necessary for a nucleophile to have a full negative charge on it

b)

A specie can act as electrophile if it contains incomplete octet

c)

A specie can act as electrophile if contains one or more unshared electron pair

d)

Any specie containing a lone pair will always be a nucleophile

24.

Identify the elimination reaction

a)

Esterification reaction

b)

Hydrogenation of alkenes

c)

Dehydration of alcohols

d)

Halogenation of alkane

25.

What is the hybridization of carbon 1 and carbon 2 atoms in CH3 – COCH3

a)

sp, sp2

b)

sp3, sp2

c)

sp2 , sp3

d)

sp3 , sp3

26.

Positional isomerism is not shown by

a)

Aldehydes

b)

Alcohols

c)

Alkyl halides

d)

Alkenes

27.

Ethers show the phenomenon of

a)

Position isomerism

b)

Metamerism

c)

Functional group isomerism

d)

Geometric isomerism

28.

neo-pentane contains how many secondary hydrogen

a)

1

b)

2

c)

3

d)

Zero

29.

Conversion of vinyl alcohol into acetaldehyde is

a)

Cis trans isomerism

b)

Tautomerism

c)

Positional isomerism

d)

Chain isomerism

30.

Cis trans isomerism is not shown by

a)

2-butene

b)

1-butene

c)

3-methyl-2-butene

d)

2-chloro-2-butene

31.

Restricted rotation around double bond is due to

a)

Formation of sigma bond between sp2-s orbital

b)

Formation of pi bond between py – py orbitals

c)

Formation of pi bond between between pz – pz orbitals

d)

Presence of bulky groups on doubly bonded carbons

32.

1IUPAC name of CH3C(CH3)2CH(CH3)CH3

a)

2,2,3-trimethyl butane

b)

2,3,3- trimethyl butane

c)

2,2,4- trimethyl penatane

d)

2,2-dimethyl pentane

33.

Which statement about the members of a homologous series is correct:

a)

They have the same empirical formula

b)

They have the same number of carbon

c)

They have same melting points

d)

They undergo similar reactions

34.

The oxidation of an alkene by alkaline KMnO4 gives a diol which on further oxidation gives diketone. The given alkene is:

a)

CH3HC = CHCH3

b)

(CH3)2C = C(CH3)2

c)

CH3HC = C(CH3)2

d)

CH3HC = CH2

35.

Under ordinary conditions alkanes are inert towards:

a)

Acids

b)

Oxidizing agents

c)

Alkalies

d)

All of these

36.

Heat of combustion of methane is:

a)

450kJ mol-1

b)

891kJ mol-1

c)

651kJmol-1

d)

911kJmol-1

37.

The order of reactivity of halogen acids with Alkenes is:

a)

HI > HCI > HBr

b)

HCI > HBr < HI

c)

HI > HBr > HCI

d)

HCI > HI > HBr

38.

Which of following reaction can also take place in dark?

a)

Methane and chlorine

b)

Methane and iodine

c)

Methane and bromine

d)

Methane and fluorine

39.

Which is hydration of alkenes

a)

Alkene + H2O

b)

Alkene + H2SO4 + H2O (cold)

c)

Alkene + H2O/NaOH

d)

Alkene + H2SO4 + H2O (100°C)

40.

The helical structure of proteins is stabilized by

a)

Peptide bonds

b)

Hydrogen bonds

c)

Disulfide bonds

d)

Ether bonds

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