Question # 1

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

In which one of the following compound rings are not fused together at ortho positions

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Phenanthrene

Naphthalene

Diphenyemethane

Anthracene

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

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Zinc dust and soda lime

Soda time and zinc dust

Zinc dust and sodium hydroxide

Soda lime and copper

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

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Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

Hydrocarbons are organic compounds which contain elements such as

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Hydrogen

Carbon

Hydrogen and carbon

Halogens

Preparation of vegetable ghee involves

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Halogenations

Hydrogenations

Hydroxylation

Dehydrogenations

Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon

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Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyle acetate

The general formula of alkane is

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C_nH_2n+2

C_nH_n

C_nH_2n

C₂H_2n-1

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

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2

1

3

4

Ethylene polymerizes at 100 atm pressure and 400°C to give

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Polybenzene

Polyalcohol

Polypropylene

Polyethylene

The elimination of HX from adjacent carbon atoms is called

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Halogenations

Hydrohalogenation

Dehydrohalogenation

Hydration

Which of the following is not an electrophitic substitution reaction of benzene

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Nitration

Sulphonation

Fridel-Craft alkylation

Free radical chlorination of benzene

Cyclohexane can be converted not benzene in the presence of

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Pt at 100°C

Pt at 250°C

Pd at room temperature

Pt at room temperature

The method used only for the production of symmetrical alkanes

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Kolb's method

Clemmenen

Cannizzaro

Wolf kishner

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

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Decrease

Increase

Remain constant

Partially decreases

Alkyne is :

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CH_3-CH₃

CH₄

CH₂₌CH₂

C₂H₂

"Each different compound should have a different name" was published by IUPAC system of nomenclature in

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1892

1830

1947

1979

Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to

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Alkynes

Alkenes

Alkanes

Alcohol

Which is the used as test for the presence of alkenes

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Reaction of cold dilute alkaline KMnO₄

Combustion

Polymerization

Catalytic hydrogenation

B-B'-dichloroethyl sulphide is commonly known as

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Mustard gas

Laughing gas

Phosgene gas

Bio gas

Octane number is zero for

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n-Heptane

Isooctane

n-Hexane

Isoheptane

During nitration of benzene, the active nitrating agent is

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NO3

NO2+

NO2-

HNO3

The three alternate single and double bonds in the benzene ring are called

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Conjugate bonds

Resonating bonds

Both A and B

None of above

The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule:

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Hund's rule

Markownikov's rule

Pauli's Exclusion Principle

Auf bau Principle

Zn + HCI are used in

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Clemenson reduction

Wof kishner reduction

Kolb's electrolysis

Wutruz reaction

Meta directing group decreased the ----------- of benzene ring

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Physical activity

Chemical reactivity

Density

None

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2-bromonitrobenzene

2-nitrobromobenzene

1-bromonitrobenzene

1-nitrobromobenzene

Which of the following is an ortho-para directing group

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ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test MCQs With Answers

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