ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Benzene is an example of

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

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

Identify the compound which has a bond angle of 109.5°

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

Compounds having the same molecular formula, but different functional groups show

• Metamerism A
• Position isomerism B
• Chain isomerism C
• Functional group isomerism D

Which gasoline is better?

• Of low boiling point A
• Of low molecular mass B
• Of high octane C
• All of these 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 self linking property of carbon is called as

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

The formula of esters is

• 
  A
• 
  B
• 
  C
• 
  D

• 1 A
• 2 B
• 3 C
• 4 D

The next homologue of C₁₀H₂₂will be

• C₉H₂₀ A
• C₁₂H₂₆ B
• C₁₁H₂₄ C
• C₁₃H₂₈ D

The open chain compounds are also called

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

Wohler succeeded in obtaining, urea from

• Cyanogen A
• Ammonium cyanate B
• Ammonium hydroxide C
• None of these D

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

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

Which is not a fossil fuel

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

Which of the following posses linear geometry

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

The general formula of saturated alicyclic hydrocarbons is:

• C_nH_n A
• C_nH_2n B
• C_nH_2n+2 C
• C_nH_2n-1 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

• 0 1 A
• 0 2 B
• 1 1 C
• 1 2 D

Linear shape is associated with set of hybrid orbitals?

• sp A
• sp2 B
• sp3 C
• dsp2 D

Closed chain compound can be classified into

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

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

• Three sigma and one P_i A
• Two sigma and two P_i B
• One sigma and three P_i C
• sigma 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 quality of petroleum is determined by

• Decane number A
• Octane number B
• Nexane number C
• None of these 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

Select from the following the one which alcohol

• 
  A
• 
  B
• 
  C
• 
  D

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

The rotation of two carbon atoms joined by double bond would happened only if

• Pi bond is broken A
• Sigma bond is broken B
• Both bonds are broken C
• None of above D

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

• 182 A
• 183 B
• 184 C
• 185 D

Which of the following has linear shape?

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

Which is a mixture of low boiling hydrocarbon

• Natural gas A
• Petroleum B
• Wood C
• Graphite D