Question # 1

Which can be used for dehydration of alcohol

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P₄O₁₀

H₂SO₄

H₃PO₄

All of them

Polymerization of ethane take place at pressure of 100 atm and a temperature of

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200°C

400°C

600°C

800°C

Which class of compound is more reactive

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Alkane

Alkene

Alkyne

None

B-B'-dichloroethyl sulphide is commonly known as

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Mustard gas

Laughing gas

Phosgene gas

Bio gas

Acetylene when treated with 10% H₂SO₄in the presence of HgSO₄adds one molecule of water to form

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Aldehydes

Esters

Alcohols

Acids

What is not a common use of methane

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As a fuel

For the preparation of haloaklanes

For the preparation of methyl alcohol

For the preparation of sulphuric acid

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

Benzene does not undergo

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Substitution reaction

Addition reaction

Oxidation reaction

Elimination reaction

A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

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100

70

50

40

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

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Hund's rule

Markowvikov's rule

Pauli's exclusion principle

Auf ban principle

The electrophile in aromatic sulphonation is

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H₂SO₄

HSO₄

SO₃

SO₃⁺

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

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

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Ethane

Ethyne

Methane

Propane

Benzene is not prepared from

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Acetylene

Phenol

Benzoic acid

Bromo benzene

Formula of chloroform is:

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CH₃Cl

CCl₄

CH₂Cl₂

CHCl₃

An alkane is produced when an alkyle halide reacts with zinc in the presence of

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HCl

CH₃COOH

Both a & b

None

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

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Phenanthrene

Naphthalene

Diphenyemethane

Anthracene

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2, 3-dimethylbutane

2, 3-methylbutane

2-dimethylbutane

Dimethylbutane

The order of reactivity of halogen acids towards alkenes

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HCl > HBr > Hl

HBr > HCl > HI

HCl > HBr

HI > HBr > HCl

Which of the following decolorized Br₂-water

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Methane

Ethane

Ethene

Propane

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

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyle acetate

Alkyne is :

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CH_3-CH₃

CH₄

CH₂₌CH₂

C₂H₂

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

Kolb's method has limited synthetic applications due to

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Expensive catalysis

Slow reaction

Number of side products produced

Salts used are very expensive

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

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isobutyl benzene

tert-Butyl benzene

n- Butyl benzene

no reaction

Replacement of hydrogen by NO₂group is called

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Sulphonatioin

Hydration

Nitration

Cracking

Alkanes are gases :

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C₁-C₄

C₅-C₁₀

C₁₁-C₁₅

C₁₀-C₂₀

Hydrocarbon which is liquid at room temperature is

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Pentane

Butane

Propane

Ethane

The four bonds of carbon in methane are directed towards the corners of

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Cube

Pentagon

Hexagon

Tetrahedron

CnH_2nis the general formula of

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Alkanes

alkynes

None of above

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