Question # 1

The treatment of benzene with isobutene in the presence of sulphuric acid give

Choose an answer

isobutyl benzene

tert-Butyl benzene

n- Butyl benzene

no reaction

The electron releasing effect of methyl group is significant and it makes ring a good

Choose an answer

Electrophilic

Nucleophilic

Nucleophobic

Hydrophobic

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

Choose an answer

H₂SO₄

Ni

Fe₂O₃

Al₂O₃

The correct order of reactivity of halogens with alkanes is

Choose an answer

l₂> Br₂> Cl₂> F₂

l₂> Cl₂> F₂> Br₂

F₂> Cl₂> l₂> Br₂

F₂> Cl₂> Br₂> l₂

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Choose an answer

Chlorination, nitration, reducing

Nitration, chlorination, reducition

Nitration, reduction,chlorination

Nitration, reduction, acylation, chlorination, hydrolysis

The empirical formula of benzene is determined by

Choose an answer

IR spectra

U.V

Elemental analysis

NMR spectra

The major reaction occurring in the engines of automobiles is

Choose an answer

Oxidation

Reducing

Combustion

Decomposition

Benzene is not prepared from

Choose an answer

Acetylene

Phenol

Benzoic acid

Bromo benzene

Alkanes have functional group :

Choose an answer

----X

--OH

----COH

No functional group

The reaction in which ketone is reduced to the alkane is called

Choose an answer

Kolb

Clemmensen

Cannizzaro

None

Kolb's method is not useful for the production of

Choose an answer

Methane

Ethane

Propane

Butane

Benzene is prepared from n-hexane in the presence of catalyst

Choose an answer

Cr₂O₃

Al₂O₃

SiO₂

All above

Which one of the following gases is used for artificial ripening of fruits ?

Choose an answer

Ethane

Ethyne

Methane

Propane

The molecule of ethane possess which hybrization

Choose an answer

sp³

sp²

sp

sp²d

The Total coal resources of Pakistan are estimated to be

Choose an answer

184 billion

184 million tones

1.84 billion tounes

1.84 million tonnes

Octane number can be changed by

Choose an answer

Isomerisation

Alkylation

Cyclisation

All of these

Hydrocarbons are organic compounds which contain elements such as

Choose an answer

Hydrogen

Carbon

Hydrogen and carbon

Halogens

How many molecules of chlorine adds in benzene in the presence of sunlight

Choose an answer

One

Two

Three

Four

Kolb's method has limited synthetic applications due to

Choose an answer

Expensive catalysis

Slow reaction

Number of side products produced

Salts used are very expensive

The alkynides are used for the ----------- of alkynes

Choose an answer

Pxperation

Purification

Seperation

All of above

Hydrocarbons contain :

Choose an answer

Carbon only carbon

Hydrogen only

Carbon & hydrogen

Carbon , hydrogen & halogen

Toluene is also called

Choose an answer

Hydroxyl benzene

Methyl benzene

ethyl benzene

None

Benzene was discovered by Michael Faraday's in

Choose an answer

1824

1825

1826

1827

Complete combustion of alkane yields

Choose an answer

CO₂+ H₂O

CO₂+ heat

CO + H₂O heat

CO₂+ H₂O + heat

Alkanes are soluble in all except

Choose an answer

Benzene

Ether

Water

Carbon tetra chloride

Acetylene is used in the manufacture of

Choose an answer

Rubber

Plastic

Ethyle alcohol

All of these

Raney - nickel is the alloy of Ni with

Choose an answer

Pt

Al

Cu

Pd

Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as

Choose an answer

Sabatier-senderens reaction

kolbes reaction

Cannizaro's reaction

Haloform reaction

The electrophile in aromatic sulphonation is

Choose an answer

H₂SO₄

HSO₄

SO₃

SO₃⁺

Substitution of halogen in the benzene ring requires catalyst

Choose an answer

AlCl₃

FeCl₃

SiO₂

Organo - nickel

Hybridization of each carbon atom in benzene ring is

Choose an answer

sp hybridized

sp²hybridized

sp³

dsp²

More Classes

Other Links

ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer