ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Which of the following compounds contains a triple bond?

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

In alkynes the bonds between carbon atoms are

• All sigma bonds A
• All pi(π) bonds B
• One is sigma and two areπ(pi) bonds C
• One isπ(pi) and two are sigma bonds D

The functional group isomer of dimethylether is

• Ethyl alcohol A
• Propyl alcohol B
• Diethyl ether C
• Butyl alcohol D

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

Which is not the poplar reaction

• 
  A
• 
  B
• 
  C
• 
  D

The quality of petroleum is determined by

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

• 1 A
• 2 B
• 3 C
• 4 D

General formula of carbocyclic acids is:

• RCOH A
• RCOR B
• RCOOR C
• R-OH D

The atom other than C in a hetrocyclic compound is called as

• Hetroatom A
• Hetroion B
• Hetromolecule C
• Hetroelement D

Which of the following has linear shape?

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

The chemist who synthesized urea from ammonium cyanate was

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

Types of cracking are:

• Thermal A
• Catalytic B
• Steam C
• All 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

The formula of esters is

• 
  A
• 
  B
• 
  C
• 
  D

Who rejected the vital force theory

• Wholer A
• Fisher B
• Newton C
• Lewis 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 open chain organic compounds are called

• Linear compounds A
• Aromatic B
• Aliphatic C
• Both A and B 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

Identify the hydrocarbon formed, when ethyl bromide reacts with, alcoholic KOH at 100°

• Methane A
• Ethane B
• Ethene C
• Ethyne D

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

• 182 A
• 183 B
• 184 C
• 185 D

Tetraethyle lead causes disease:

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

Unsaturated hydrocarbon containing a double bond are called

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

Which of the following is an electrophile

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

Peat contains about

• 60% carbon A
• 80% carbon B
• 78% carbon C
• 50% carbon D

Closed chain compound can be classified into

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

Which of the following is an aromatic compound

• Propanol A
• Cyclohexane B
• Acetone C
• Benezene D

Major component of natural gas is:

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

• 0 A
• 1 B
• 2 C
• 3 D

Which of the following gases is used for illuminating purpose?

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

At present oil refineries in Pakistan are:

• One A
• Two B
• Three C
• Four D