ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Which is not the poplar reaction

• 
  A
• 
  B
• 
  C
• 
  D

The percentage of methane in natural gas is

• 50% A
• 60% B
• 85% C
• 90% D

The next homologue of C₁₀H₂₂will be

• C₉H₂₀ A
• C₁₂H₂₆ B
• C₁₁H₂₄ C
• C₁₃H₂₈ 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

The active part in a molecule is called

• Homologous series A
• Functional group B
• Chemical bonding C
• Ionic complex D

I-Chloropropane has two isomers, it is an example of

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

Wohler succeeded in obtaining, urea from

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

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

• 0° A
• 60° B
• 120° C
• 180° D

Functional group of ketones is:

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

Rates of organic reactions are

• Fast A
• Very fast B
• Slow C
• Non-reactive 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

Which of the following gases is used for illuminating purpose?

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

Coal heated in the absence of air of about 500 - 1000°C is converted to

• Coke A
• Coal gas B
• Coal tar C
• All above D

Closed chain compound can be classified into

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

Which is the chain isomer of n-pentane

• Isopentane A
• Neopentene B
• N-pentene C
• Isopentene 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

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

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

Normal by product of cracking is

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

A nuclophile must

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

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

Sp³ hybridization occurs when carbon is bound to

• Four other atoms A
• Three other atoms B
• Two other atoms C
• One other atoms D

The catalyst,. which is used as specialist for cracking, are

• Aluminates A
• Alumlnosilicates B
• Aluminium slats C
• All can be used D

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

• 182 A
• 183 B
• 184 C
• 185 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

Peat contains about

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

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

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

• 0 A
• 1 B
• 2 C
• 3 D

Organic compounds are soluble in all except

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