Question # 1

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1, 5-pentadiene

Penta-1, 4-diene

1, 1-pentadiene

1, 4-pentene

In t-butyl alcohol, the tertiary carbon is bonded to:

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Two hydrogen atom

Three hydrogen atoms

One hydrogen atoms

No hydrogen atoms

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Addition Elimination

Addition Reduction

Elimination Reduction

Substitution Elimination

The state of hybridization of carbon atom in methane is

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sp³

sp²

sp

dsp²

Which of these always applies to a nucleophile

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It attacks a double bond

It has a lone pair of electrons

It is single atom

It is negatively charged

The destructive distillation of coal gives three products. What is not the product of destructive distillation of coal

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Coal gas

Carbon dioxide

Coal tar

Coke

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

At present oil refineries in Pakistan are:

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One

Two

Three

Four

The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called,

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Hybridization

Polymerization

Isomerisation

Carbonization

Normal by product of cracking is

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Ethane

Butane

Benzene

All of them

Which is not the poplar reaction

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1

2

3

4

Those compound which have any atom other than C as member of rings are called as

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Monocyclic

Hetrocyclic

Aliphatic

Both a and b

A free radical reaction takes place in three steps, initiation, propagation and terminations. Which of the following expression represents a propagation step

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Major component of natural gas is:

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Ethane

Ethene

Propane

Methane

Sp³hybridization occurs when carbon is bound to

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Four other atoms

Three other atoms

Two other atoms

One other atoms

The percentage of methane in natural gas is

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50%

60%

85%

90%

Types of cracking are:

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Thermal

Catalytic

Steam

All a, b ,c

Compounds having same molecular formula but different structures are said to be

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Monomers

Isomers

Metamers

Tautomers

Organic compounds are soluble in all except

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Benzene

Petroleum

Ether

Water

The chemist who synthesized urea form ammonia cyanate was:

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Berzelius

Kolbe

Wohler

Lavoiser

Homologues differ from each other by an integral number of

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CH₂groups

CH₃groups

CH groups

CH₄groups

Closed chain compound can be classified into

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Homocyclic

Hetrocyclic

Aliphatic

Both a and b

Select from the following which one is alcohol?

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CH₃-CH₂-OH

CH₃-O-CH₃

CH₃COOH

CH₂-CH₂-BR

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

Which set of hybrid orbitals has planar triangle shape?

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sp³

sp

sp²

dsp²

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

Self linkage of carbon to produce long chains

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isomerism

Polymorphism

Polymerization

Catenation

Who rejected the vital force theory

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Wholer

Fisher

Newton

Lewis

Carboxylic acid, ester, amide and amino groups are shown. Which is the correct description of these functional groups

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Which of the following is a product of destructive distillation of coal

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Ammonia

Coke

Cyanides

Kerosene

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