Question # 1

Alkynes normally have ______ hybridization

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Sp

Sp²

SP³

d sp³

In which molecule carbon atom is sp²hybridized

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CH₄

C₂H₄

C₂H₂

None of the above

The major portion of natural gas is

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Ethane

Propane

Butane

Methane

Angle 120° is observed in molecules :

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CH₄

CH_3-CH₃

CH -CH

CH_{2 =}CH₂

Which of the following is not a hydrocarbon

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Butane

Methyl benezene

Acetylene

Glucose

The bond angle between hydrogen atoms and carbon in alkane is

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104.5°

107.5°

109.5°

120.5°

The open chain organic compounds are called

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Linear compounds

Aromatic

Aliphatic

Both A and B

Which is a mixture of low boiling hydrocarbon

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Natural gas

Petroleum

Wood

Graphite

Due to the bacterial action on wood it is converted into

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Peat

Lignite

Bituminous coal

Anthracite

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

Catenation is a process in which carbon shows the properties of making

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Multiple bonds

Hybridization

Long chains or rings of carbon atom

Showing isomerism

The distillation of coal at high temperature and in absence of air is called

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Vacuum distillation

Normal distillation

Fractional distillation

Destructive distillation

Which of the following is complex?

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CaSO₄. 0.5H₂O

(C₆H₁₀O₅)_n

C₆H₁₂O₆

CH₄

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

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0°

60°

120°

180°

A double bond consists of:

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Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

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Three sigma and one P_i

Two sigma and two P_i

One sigma and three P_i

sigma

Unsaturated hydrocarbon containing a double bond are called

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paraffin

Alkanes

Olefins

Acetylene

Products of coal is:

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Peat

Lignite

Bituminous coal

All above

Polythene is a polymer of

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Ethane

Ethene

Acetone

Propylene

Which of the following gases is used for illuminating purpose?

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Methane

Ethane

Propane

Butane

The structure of benzene is

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Hexagonal

Pyramidal

Square planer

Tetrahedral

Which of the following is an electrophile

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Bromine

KBr

NH₃

Benzene

Carboxylic acid, ester, amide and amino groups are shown. Which is the correct description of these functional groups

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Functional group of ketones is:

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---CHO

---CO---

---C≡ N

---COOH

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3

4

5

2

Select from the following which one is alcohol?

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CH₃-CH₂-OH

CH₃-O-CH₃

CH₃COOH

CH₂-CH₂-BR

Linear shape is associated with which set of hybrid orbitals

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sp

sp²

sp³

dsp²

Which set of hybrid orbitals has planar triangular shape

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sp³

sp

sp²

dsp²

Geographical survey of Pakistan estimates about billion tons of coal in Pakistan:

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182

183

184

185

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

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ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test MCQs With Answers

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