ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

The formula of ketone is

• 
  A
• 
  B
• 
  C
• None of these D

Tetraethyle lead causes disease:

• Typhoid A
• Respiratory B
• Stomach C
• Muscular D

A double bond consists of

• Two sigma bonds A
• One sigma and one Pi bond B
• One sigma and two Pi bonds C
• Two Pi bonds D

Which of the following is an electrophile

• Bromine A
• KBr B
• NH₃ C
• Benzene D

Which of the following is not a hydrocarbon

• Butane A
• Methyl benezene B
• Acetylene C
• Glucose D

In t-butyl alcohol, the tertiary carbon is bonded to:

• Two hydrogen atom A
• Three hydrogen atoms B
• One hydrogen atoms C
• No hydrogen atoms D

General formula of carbocyclic acids is:

• RCOH A
• RCOR B
• RCOOR C
• R-OH D

Which of the following pair contains isomers of each other

• Propanoic acid and propanone A
• Acetone and acetaldehyde B
• Ethyl alcohol and diethyl ether C
• Methyl alcohol and dimethyl ether D

The percentage of methane in natural gas is

• 50% A
• 60% B
• 85% C
• 90% D

Which gasoline is better?

• Of low boiling point A
• Of low molecular mass B
• Of high octane C
• All of these D

Linear shape is associated with which set of hybrid orbitals

• sp A
• sp² B
• sp³ C
• dsp² D

The gasoline having octane No. 100 has ______

• More knocking A
• Less knocking B
• No knocking C
• Only knocking D

Who rejected the vital force theory

• Wholer A
• Fisher B
• Newton C
• Lewis D

Alkanes normally have ______ hybridization

• Sp A
• Sp² B
• Sp³ C
• d sp³ D

Vital force theory was rejected by

• Berzellius A
• Kolbe B
• Wholer C
• Lavoiser D

The open chain compounds are also called

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

Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO₄as catalyst

• Carbinol A
• Methanol B
• Ethanol C
• Glycol D

The characteristic reactions of alkanes are

• Addition reactions A
• Substitution reactions B
• Condensation reactions C
• Polymerization reactions D

The bond angle between hydrogen atoms and carbon in alkane is

• 104.5° A
• 107.5° B
• 109.5° C
• 120.5° D

• 2, 2, 4-trimethylpentane A
• 2, 4, 4-trimethylpentane B
• 2, 4, 4-methyepentane C
• 2, 2, 4-methylpentane D

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

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

The active part in a molecule is called

• Hetroatom A
• Functional group B
• Chemical bond C
• Ion D

Which structure shows a primary alcohol

• 
  A
• 
  B
• 
  C
• 
  D

Peat before conversion to bituminous coal is converted to

• Lignite A
• Anthracite B
• Asphalt C
• None D

Which of these always applies to a nucleophile

• It attacks a double bond A
• It has a lone pair of electrons B
• It is single atom C
• It is negatively charged D

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

• 182 A
• 183 B
• 184 C
• 185 D

n-butane and iso butane are an example of

• Chain isomerism A
• Positional isomerism B
• Meta merism C
• Functional group isomerism D

The structure of benzene is

• Hexagonal A
• Pyramidal B
• Square planer C
• Tetrahedral D

Select from the following which one is alcohol?

• CH₃-CH₂-OH A
• CH₃-O-CH₃ B
• CH₃COOH C
• CH₂-CH₂-BR D

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

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