Hydrocarbons

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Hydrocarbons

Test1 Max. Marks = 40

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1. When propyne is treated with dilute H₂SO₄ and HgSO₄ , the major product is

4 points

(1) Propanal

(2) Propanol

(3) Propyl hydrogen sulphate

(4) Propanone

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2.The product formed when acetylene is passed through red hot tube is

4 points

(1) Benzene

(2) Cyclohexane

(3) Neoprene

(4) Ethane

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3. The function of anhydrous AlCl₃ in the Friedel-Craft's reaction is to

4 points

(1) Absorb water

(2) Absorb HCl

(3) To produce electrophile

(4) To produce nucleophile

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4. Benzene cannot undergo

4 points

(1) Substitution

(2) Addition

(3) Elimination

(4) Oxidation

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5.Chemical name of the insecticide gammexene is

4 points

(1) DDT

(2) Benzene hexachloride

(3) Chloral

(4) Hexachloroethane

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6. Select the most reactive alkene for hydrogenation

4 points

(1)

(2)

(3)

(4)

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7.The smallest hydrocarbon which contains secondary carbons only is -

4 points

(1) propane

(2) cyclobutane

(3) cyclopropane

(4) cyclopropanol

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8.What is the major product of the following reaction?

4 points

(1)

(2)

(3)

(4)

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9. During debromination of meso-dibromobutane, the major compound formed is

4 points

(1) n-butane

(2) 1-butane

(3) cis-2-butene

(4) trans-2-butene

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10. The petrol having octane number 80 has

4 points

(1) 20% normal heptane + 80% iso-octane

(2) 80% normal heptane + 20% iso-octane

(3) 20% normal heptane + 80% normal octane

(4) 80% normal heptane + 20% normal octane

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