ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

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

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

Those compound which have any atom other than C as member of rings are called as

• Monocyclic 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

• 0 1 A
• 0 2 B
• 1 1 C
• 1 2 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

Wohler succeeded in obtaining, urea from

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

A double bond consists of:

• Two sigma bonds A
• One sigma and one pi bonds B
• One sigma and two pi bonds C
• Two pi bonds D

Polythene is a polymer of

• Ethane A
• Ethene B
• Acetone C
• Propylene D

Unsaturated hydrocarbon containing a double bond are called

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

Hybridzation explain the --------- of orbitals

• Type of bonding A
• Shapes B
• Shape and type of bonding C
• None of above D

General formula of carbocyclic acids is:

• RCOH A
• RCOR B
• RCOOR C
• R-OH D

Normal by product of cracking is

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

The major portion of natural gas is

• Ethane A
• Propane B
• Butane C
• Methane 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

Coal is obtained from dead remains of

• Plants A
• Animals B
• Both a and b C
• None D

Organic compounds resemble to those of inorganic compounds having same

• Ionic properties A
• Carbon forming long chain or rings B
• Chemical forces C
• Isomerism D

Alkanes normally have ______ hybridization

• Sp A
• Sp² B
• Sp³ C
• d sp³ D

Which of the following is not a hydrocarbon

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

Source of organic compounds primarily is:

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

Which set of hybrid orbitals has planar triangular shape

• sp³ A
• sp B
• sp² C
• dsp² D

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

• 
  A
• 
  B
• 
  C
• 
  D

Ether shows the phenomenon of

• position isomerism A
• Chain isomerism B
• Metamerism C
• Cir-trans isomerism D

Which of the following is an aromatic compound

• Propanol A
• Cyclohexane B
• Acetone C
• Benezene 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

Which is not the poplar reaction

• 
  A
• 
  B
• 
  C
• 
  D

The bond angle between hydrogen atoms and carbon in alkane is

• 104.5° A
• 107.5° B
• 109.5° C
• 120.5° D

Which of the following contains single bonds

• Benzene A
• Alkyne B
• Alkene C
• Alkane 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