Question # 1

The percentage of methane in natural gas is

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50%

60%

85%

90%

Products of coal is:

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Peat

Lignite

Bituminous coal

All above

Identify the hydrocarbon formed, when ethyl bromide reacts with, alcoholic KOH at 100°

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Methane

Ethane

Ethene

Ethyne

On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives

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Methyl alcohol

Ethyl alcohol

Ethyl hydrogen sulphate

Methyl hydrogen sulphate

The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called

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Physical

Inorganic

Nuclear

Organic

Normal by product of cracking is

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Ethane

Butane

Benzene

All of them

Which set of hybrid orbitals has planar triangular shape

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sp³

sp

sp²

dsp²

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

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The gasoline having octane No. 100 has ______

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More knocking

Less knocking

No knocking

Only knocking

Gasoline is a mixture of hydrocarbons containing carbon atoms

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5 to 10

5 to 8

5 to 12

5 to 11

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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

Polythene is a polymer of

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Ethane

Ethene

Acetone

Propylene

In a heterollytic bond fission reaction

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A molecule of H₂O is formed

A molecule of H₂O is eliminated

A free radical is formed

A positive and a negative ion is formed

The functional group of acid amide is

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Which reaction produces a free radical

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SN reaction

Homelytic fission reaction

Heterolytic fission reaction

Addition reaction

Which of the following is complex?

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CaSO₄. 0.5H₂O

(C₆H₁₀O₅)_n

C₆H₁₂O₆

CH₄

Linear shape is associated with set of hybrid orbitals?

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sp

sp2

sp3

dsp2

Hybridzation explain the --------- of orbitals

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Type of bonding

Shapes

Shape and type of bonding

None of above

The open chain organic compounds are called

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Linear compounds

Aromatic

Aliphatic

Both A and B

A double bond consists of:

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Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

Benzene is an example of

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Aromatic compound

Cyclic compound

Aliphatic compound

A cyclic compound

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3

4

5

2

The essential component of organic compound is

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O

C

P

N

Types of cracking are:

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Thermal

Catalytic

Steam

All a, b ,c

Which of the following is an electrophile

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Bromine

KBr

NH₃

Benzene

Which one of the followings is a heterocyclic compound

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Cyclohexanol

Phenol

Pyridine

Anthracene

In alkynes the bonds between carbon atoms are

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All sigma bonds

All pi(π) bonds

One is sigma and two areπ(pi) bonds

One isπ(pi) and two are sigma bonds

Acetylene had a characteristic ethereal smell resembling that of

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Ginger

Vinegar

Garlic

Onion

The chemist who synthesized urea form ammonia cyanate was:

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Berzelius

Kolbe

Wohler

Lavoiser

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

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ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test MCQs With Answers

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