ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Organic compounds are soluble in all except

• Benzene A
• Petroleum B
• Ether C
• Water D

The state of hybridization of carbon atom in methane is:

• sp³ A
• sp² B
• sp C
• dsp² 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

Functional group of ketones is:

• ---CHO A
• ---CO--- B
• ---C≡ N C
• ---COOH D

The formula of ketone is

• 
  A
• 
  B
• 
  C
• None of these D

Which of the following posses linear geometry

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

Which of the following gases is used for illuminating purpose?

• Methane A
• Ethane B
• Propane C
• Butane D

Source of organic compounds primarily is:

• Plants A
• Animals B
• Minerals C
• A & B D

The distillation of coal at high temperature and in absence of air is called

• Vacuum distillation A
• Normal distillation B
• Fractional distillation C
• Destructive distillation D

The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called,

• Hybridization A
• Polymerization B
• Isomerisation C
• Carbonization 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

Catenation is a process in which carbon shows the properties of making

• Multiple bonds A
• Hybridization B
• Long chains or rings of carbon atom C
• Showing isomerism D

• Addition Elimination A
• Addition Reduction B
• Elimination Reduction C
• Substitution Elimination D

At present oil refineries in Pakistan are:

• One A
• Two B
• Three C
• Four D

Carboxylic acid, ester, amide and amino groups are shown. Which is the correct description of these functional groups

• 
  A
• 
  B
• 
  C
• 
  D

Tetraethyle lead causes disease:

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

The compounds which have any atom other than Carbon atom, in rings are called as

• Monocyclic A
• Heterocyclic B
• Homocyclic C
• None of the above D

The self linking of carbon atoms is called

• Chelation A
• Isomerism B
• Catenation C
• None of the above D

Which of the following is not a hydrocarbon

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

Which set of hybrid orbitals has planar triangle shape?

• sp³ A
• sp B
• sp² C
• dsp² D

Benzene is an example of

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

Which of the following is an electrophile

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

The quality of petroleum is determined by

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

Linear shape is associated with which set of hybrid orbitals

• sp A
• sp² B
• sp³ C
• dsp² D

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

1-butene an 2-butene are an example of

• Chian isomerism A
• Positional isomerism B
• Metamerism C
• Functional group isomerism D

A nuclophile must

• Be an atom A
• A group of atoms B
• Have a lone pair C
• Be negatively charged D

Quality of fuel is judged from its octane number. The best fuels are

• Straight chain hydrocarbons A
• Branched chain hydrocarbons B
• Cyclic compounds C
• Compounds containing benzene ring 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

The general formula for alkenes is

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