ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Compounds of carbon and hydrogen in which the tetra valency of carbon is fully satisfied are called,

• Saturated A
• Un-saturated B
• Magnetic C
• Para-magnetic D

The process in which one s and two p orbitals mix up with each other is called

• Sp-hybridization A
• Sp²-hybridization B
• Sp³-hybridization C
• Dsp²-hybridization D

At present oil refineries in Pakistan are:

• One A
• Two B
• Three C
• Four D

Cracking products are :

• Only alkanes A
• Only alkenes B
• Alkanes and alkenes C
• Alkynes D

Unsaturated hydrocarbon containing a double bond are called

• paraffin A
• Alkanes B
• Olefins C
• Acetylene D

Types of cracking are:

• Thermal A
• Catalytic B
• Steam C
• All a, b ,c D

Those compound which have any atom other than C as member of rings are called as

• Monocyclic A
• Hetrocyclic B
• Aliphatic C
• Both a and b D

The percentage of methane in natural gas is

• 50% A
• 60% B
• 85% C
• 90% D

In which molecule carbon atom is sp²hybridized

• CH₄ A
• C₂H₄ B
• C₂H₂ C
• None of the above D

• 0 1 A
• 0 2 B
• 1 1 C
• 1 2 D

Identify the compound which has a bond angle of 109.5°

• Ethyne A
• Ethere B
• Methane C
• Benzene D

In the presence of high temperature and pressure peat is converted to:

• Lignite A
• Polymorphism B
• Polymerization C
• Catenation D

The state of hybridization of carbon atom in methane is

• sp³ A
• sp² B
• sp C
• dsp² D

Which is not a nucleophile

• Benzene A
• Chlorine B
• Ethene C
• Ethanol D

Products of coal is:

• Peat A
• Lignite B
• Bituminous coal C
• All above D

Which of the following is complex?

• CaSO₄. 0.5H₂O A
• (C₆H₁₀O₅)_n B
• C₆H₁₂O₆ C
• CH₄ D

A free radical reaction takes place in three steps, initiation, propagation and terminations. Which of the following expression represents a propagation step

• 
  A
• 
  B
• 
  C
• 
  D

Cracking done at low pressure and with a catalyst is called _______ cracking

• Thermal A
• Catalytic B
• Steam C
• None of them D

General formula of carbocyclic acids is:

• RCOH A
• RCOR B
• RCOOR C
• R-OH D

type of hybridization in CH≡CH is:

• sp A
• sp² B
• sp³ C
• dsp² D

The chemist who synthesized urea form ammonia cyanate was:

• Berzelius A
• Kolbe B
• Wohler C
• Lavoiser D

Number of isomers of butane are:

• One A
• Two B
• Three C
• Four D

Ether show the phenomenon of :

• Position isomerism A
• Functional group isomerism B
• Metamerism C
• Cis-trans isomerism D

The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called

• Physical A
• Inorganic B
• Nuclear C
• Organic D

Which of the following is a product of destructive distillation of coal

• Ammonia A
• Coke B
• Cyanides C
• Kerosene D

Which of the following posses linear geometry

• Alkane A
• Alkene B
• Alkyne C
• Benzene D

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

• Functional isomers A
• Position isomers B
• Chain isomers C
• Metamers D

The active part in a molecule is called

• Homologous series A
• Functional group B
• Chemical bonding C
• Ionic complex D

The open chain compounds are also called

• Aliphatic A
• Alicylic B
• Aromatic C
• Both a and b D

Organic compounds generally react at ______ rates

• Slow A
• Fast B
• Moderate C
• None of them D