Question # 1

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

Functional group of Alcohols is

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-COOH

-C=0

C-O-C

-OH

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.

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Organic chemistry

Inorganic chemistry

Biochemistry

Nuclear chemistry

Main component of natural gas is

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Methane

propane

Butane

Propene

The 1st organic compound prepared in laboratory.

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Urea

NaCl

Thiourea

Pyridine

Aromatic compounds are given this name because of;

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smell they have

slippery touch they have

bitter taste they have

sour taste they have

In laboratory urea was prepared by

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Wohler

Rutherford

Berzelius

Dalton

Alkyl radical is derivative of

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Alkane

Alkene

Alkyne

All

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

Which one of the following compounds is an aldehyde?

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CH₃-CH₂-OH

CH₃-COOH

CH₃CHO

CH₃COCH₃

Main component of Natrual gas.

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CH₃

CH₄

C₂H₆

C₂H₂

Formula of Decane is.

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C₁₀H₂₀

C₁₀H₂₂

C₁₀ H₄

C₁₀H₁₆

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

The strone heating of coal in retorts in the absence of air is called.

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Fractional distillation

sublimation

Roasting

Destructive distillation

Formula of acetaldehyde is:

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The example of heterocyclic compound is.

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Benzene

Hexane

Cyclohexane

Pyridine

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