Question # 1

The quality of petroleum is determined by

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Decane number

Octane number

Hexane number

Gold number

Boiling point range of petroleum ether.

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5- 20 ^oC

10- 30^oC

20- 60^oC

30- 90^oC

Which one of the following compound has octane number 100.

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2,2,4-trimethyl petane

n- pentane

2,4-dimethyl pentane

2- methyl pentane

Wohler synthesized first organic compound in laboratory from

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Heating cyanogen's

Cyanogen and ammonium chloride solution

Cyanogen and HNO2

Heating ammonium cyanate

Which one is the heterocyclic compound of oxygen

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Pyrridine

Parrole

Furan

Thiophene

The state of hybridization of "C" in ethane is

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SP

sp²

dsp²

sp³

Which one of the following is an amide

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(NH₂)₂CO

NH₂.CH₃

C₆H₅NH₂

N(CH₃)₃

Which type of coal has greater percentage of carbon.

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Peat

Lignite

Bituminous

Anthracite

The isomers always have same

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Chemical properties

Structural formula

Molecular formula

Physical properties as well as chemical properties

Linear shape is associated with set of hybrid orbitals

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SP

sp²

dsp²

sp³

which one is not fossil fuel

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Petroleum

Natural gas

Coal

Alcohol

Kerosene oil is a mixture of hydrocarbon having carbon

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11 to 13

10 to 12

11 to 12

8 to 9

-------------------- is Alcohol in the following

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CH₃.CH₂.OH

CH₃.O.CH₃

CH₃COOH

CH₃.CH₂.SH

The isomers having same functional group but different alkyl group on either side of functional group are called.

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Metamers

Polymers

Monomers

Homologous series

Formula of marsh gas is

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CH₄

C₂H₆

C₃H₆

C₄H₁₀

Geometrical isomerism in alkene is due to.

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C = C free rotation of bond

No C = C free rotation of bond

Presence of multiple bond only

Opticla rotation due to multiple bond

In ethene molecule how many carbon orbitals are equivalent and degenerate in nature.

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3

4

5

6

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