Practice Pakistan's most useful MCQs for competitive exams

The general formula of cycloalkene is __________________?

• (A)  CnH2n
• (B)  CnH2n+2
• (C)  CnH2n-1
• (D)  CnH2n-2

Answer

Submitted By :Ali Uppal

The structure of ethyne is_________________?

• (A)  angular
• (B)  trigonal
• (C)  linear
• (D)  trigonal planar

Answer

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Only sigma bonds are present in__________________?

• (A)  propene
• (B)  butanoic acid
• (C)  butanal
• (D)  ethoxy ethane

Answer

Submitted By :Ali Uppal

2-propanol and 1-propanol show the isomerism________________?

• (A)  metamerism
• (B)  functional group isomerism
• (C)  geometric isomerism
• (D)  position isomerism

Answer

Submitted By :Ali Uppal

A single atom or group of atoms which gives characteristic properties to a compound is called_________________?

• (A)  radical
• (B)  hydrocarbon
• (C)  functional group
• (D)  ion

Answer

Submitted By :Ali Uppal

Ether functional group can be represented as ____________________?

• (A)  OH
• (B)  R-CO-R
• (C)  R-O-R
• (D)  R-COOH

Answer

Submitted By :Ali Uppal

Which one of the following compounds shows intense knocking ?

• (A)  n-pentane
• (B)  iso-heptane
• (C)  iso-octane
• (D)  n-heptane

Answer

Submitted By :Ali Uppal

At low temperature and pressure cracking can be done in presence of catalyst________________?

• (A)  Al2O3
• (B)  Fe2O3
• (C)  Al2O3 and SiO2
• (D)  Fe2O3 and SiO2

Answer

Submitted By :Ali Uppal

Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________?

• (A)  earth layer
• (B)  mountains
• (C)  sedimentary rocks
• (D)  rocks

Answer

Submitted By :Ali Uppal

Coal is produced after a long time decay of_________________?

• (A)  animals
• (B)  fossils
• (C)  wood
• (D)  all of the above

Answer

Submitted By :Ali Uppal