Question # 1

Rates of organic reactions are

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Fast

Very fast

Slow

Non-reactive

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 atom other than C in a hetrocyclic compound is called as

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Hetroatom

Hetroion

Hetromolecule

Hetroelement

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

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

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Methane

Ethane

Ethene

Ethyne

Fossil fuels consist of :

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Coal

Natural gas

Petroleum

All of these

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

The major portion of natural gas is

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Ethane

Propane

Butane

Methane

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

Identify the heterocyclic compound

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Toluene

Pyridine

Butanoic acid

Propenol

Who rejected the vital force theory

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Wholer

Fisher

Newton

Lewis

Which of the following contains single bonds

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Benzene

Alkyne

Alkene

Alkane

Which of the following is an electrophile

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Bromine

KBr

NH₃

Benzene

The characteristic reactions of alkanes are

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Addition reactions

Substitution reactions

Condensation reactions

Polymerization reactions

Acetylene had a characteristic ethereal smell resembling that of

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Ginger

Vinegar

Garlic

Onion

Which of the following gases is used for illuminating purpose?

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Methane

Ethane

Propane

Butane

Number of isomers of butane are:

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One

Two

Three

Four

The essential component of organic compound is

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O

C

P

N

Identify the compound which has a bond angle of 109.5°

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Ethyne

Ethere

Methane

Benzene

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

Diversity of organic compounds in millions is:

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Four

Five

Six

Seven

Functional group of ketones is:

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---CHO

---CO---

---C≡ N

---COOH

Which of the following compounds contains a triple bond?

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Alkane

Alkene

Alkyne

Benzene

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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Wholer prepared urea from

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Ammonia

NH₄CNO

NH₃

Uric acid

Tetraethyle lead causes disease:

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Typhoid

Respiratory

Stomach

Muscular

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

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Three sigma and one P_i

Two sigma and two P_i

One sigma and three P_i

sigma

The general formula for alkenes is

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C_nH_2n+1

C_nH_2n+2

C_nH_2n

C_nH_2n-2

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

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Monomers

Isomers

Metamers

Tautomers

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

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