ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

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

The process in which one s and two p orbitals mix up with each other is called

• Sp-hybridization A
• Sp²-hybridization B
• Sp³-hybridization C
• Dsp²-hybridization 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

Which of the following posses linear geometry

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

Which set of hybrid orbitals has planar triangle shape?

• sp³ A
• sp B
• sp² C
• dsp² D

The fractions obtained from fractional distillation of petroleum are placed in increasing order of their boiling points. Which order is correct

• Natural gas, petroleum ether, gasoline kerosene A
• Petroleum ether, kerosene, natural gas, petroleum ether B
• Gasoline, kerosene, natural gas, petroleum ether C
• Kerosene, gasoline, petroleum ether, natural gas D

Types of cracking are:

• Thermal A
• Catalytic B
• Steam C
• All a, b ,c D

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

Due to the bacterial action on wood it is converted into

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

The chemist who synthesized urea from ammonium cyanate was

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

Which of the following is an electrophile

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

n-butane and iso butane are an example of

• Chain isomerism A
• Positional isomerism B
• Meta merism C
• Functional group isomerism D

The state of hybridization of carbon atom in methane is:

• sp³ A
• sp² B
• sp C
• dsp² D

Which of the following is not a hydrocarbon

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

When a compound X is passed through a dilute alkaline solution of KMnO₄the pink colour of solution is discharged. The compound X is possbibly

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

Which is the chain isomer of n-pentane

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

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

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

The open chain organic compounds are called

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

Number of isomers of butane are:

• One A
• Two B
• Three C
• Four D

Compounds having same molecular formula but different structures are said to be

• Monomers A
• Isomers B
• Metamers C
• Tautomers D

Linear shape is associated with which set of hybrid orbitals

• sp A
• sp² B
• sp³ C
• dsp² D

A nuclophile must

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

Who rejected the vital force theory

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

The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called

• Physical A
• Inorganic B
• Nuclear C
• Organic D

The characteristic reactions of alkanes are

• Addition reactions A
• Substitution reactions B
• Condensation reactions C
• Polymerization reactions D

Replacement of hydrogen atom by - SO₃H group in benzene is called

• Nitration A
• Alkylation B
• Sulphonation C
• Acylation D

Gasoline is a mixture of hydrocarbons containing carbon atoms

• 5 to 10 A
• 5 to 8 B
• 5 to 12 C
• 5 to 11 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