ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Similarity in properties of different organic compounds give rise to the under standing of ______

• Polymerization A
• Non-polar nature B
• Homologous series C
• Isomerism D

Coal is obtained from dead remains of

• Plants A
• Animals B
• Both a and b C
• None D

The use of tetra ethyl lead in petrol as an efficient antiknock agent is being discouraged. Which reason is correct

• It is costly A
• It damages the engine B
• Pb is difficult to obtain in bulk quantities C
• The combustion product, lead, causes air pollutions D

Which is not a fossil fuel

• Petroleum A
• Coal B
• Natural gas C
• None of them D

How many structural acid cis-trans isomers are there for dichloroprepe, C₃H₄Cl₂

• 3 A
• 5 B
• 6 C
• 7 D

• Condensation A
• Dehydration B
• Dehydrogenation C
• Hydrogenation D

The self linking property of carbon is called as

• Linking polymerization A
• Addition B
• Catenation C
• Elimination D

The open chain compounds are also called

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

Which one of the followings is a heterocyclic compound

• Cyclohexanol A
• Phenol B
• Pyridine C
• Anthracene D

Which of the following has linear shape?

• SP A
• SP² B
• SP³ C
• None of the above D

Due to the bacterial action on wood it is converted into

• Peat A
• Lignite B
• Bituminous coal C
• Anthracite D

Who rejected the vital force theory

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

The chemist who synthesized urea from ammonium cyanate was

• Berzelius A
• Kolbe B
• Wholer C
• Lavoisier D

The destructive distillation of coal gives three products. What is not the product of destructive distillation of coal

• Coal gas A
• Carbon dioxide B
• Coal tar C
• Coke D

The essential component of organic compound is

• O A
• C B
• P C
• N D

Which of the following posses linear geometry

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

Which statement is true about a free radical

• An atom with a positive charge A
• An atom with a negative charge B
• An atom with a lone pair of electrons C
• An atom with unpaired electron D

Which structure shows a primary alcohol

• 
  A
• 
  B
• 
  C
• 
  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

Benzene is an example of

• Aromatic compound A
• Cyclic compound B
• Aliphatic compound C
• A cyclic compound D

Organic compounds generally react at ______ rates

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

Fossil fuels consist of :

• Coal A
• Natural gas B
• Petroleum C
• All of these D

Identify the heterocyclic compound

• Toluene A
• Pyridine B
• Butanoic acid C
• Propenol D

A double bond consists of:

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

The major components of coal gas are

• Hydrogen and methane A
• Ethane and carbon monoxide B
• Nitrogen and ethane C
• Ethane and carbon dioxide D

Normal by product of cracking is

• Ethane A
• Butane B
• Benzene C
• All of them D

The chemist who synthesized urea form ammonia cyanate was:

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

• 1, 5-pentadiene A
• Penta-1, 4-diene B
• 1, 1-pentadiene C
• 1, 4-pentene D

In a heterollytic bond fission reaction

• A molecule of H₂O is formed A
• A molecule of H₂O is eliminated B
• A free radical is formed C
• A positive and a negative ion is formed D

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