ECAT Pre Engineering Chemistry Chapter 18 MCQ Test With Answer

Wohler synthesized first of all the organic compound:

• Carbohydrates A
• Urea B
• Aniline C
• Toluene D

Major component of natural gas is:

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

• 0 A
• 1 B
• 2 C
• 3 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 is not a hydrocarbon

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

On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives

• Methyl alcohol A
• Ethyl alcohol B
• Ethyl hydrogen sulphate C
• Methyl hydrogen sulphate D

Linear shape is associated with which set of hybrid orbitals

• sp A
• sp² B
• sp³ C
• dsp² D

Which of the following posses linear geometry

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

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

The major portion of natural gas is

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

Which reaction produces a free radical

• SN reaction A
• Homelytic fission reaction B
• Heterolytic fission reaction C
• Addition reaction D

Which of the following expressions show a heterolytic bond fission

• 
  A
• 
  B
• 
  C
• 
  D

Types of cracking are:

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

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

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

The functional group isomer of dimethylether is

• Ethyl alcohol A
• Propyl alcohol B
• Diethyl ether C
• Butyl alcohol 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 statement is true about a free radical

• An atom with a positive charge A
• An atom with a negative charge B
• An atom with a lone pair of electrons C
• An atom with unpaired electron D

Which structure shows a primary alcohol

• 
  A
• 
  B
• 
  C
• 
  D

Coal is obtained from dead remains of

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

Normal by product of cracking is

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

Angle 120° is observed in molecules :

• CH₄ A
• CH_3-CH₃ B
• CH -CH C
• CH_{2 =}CH₂ D

Functional group of ketones is:

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

Type of isomerism in BrCH=CHBr is:

• Structural isomerism A

• Conformational isomerism

  B
• Geometrical isomerism C
• Positional isomerism D

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

• Three sigma and one P_i A
• Two sigma and two P_i B
• One sigma and three P_i C
• sigma 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

• 0 1 A
• 0 2 B
• 1 1 C
• 1 2 D

Which of the following has linear shape?

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

Alkanes normally have ______ hybridization

• Sp A
• Sp² B
• Sp³ C
• d sp³ D

The formula of ketone is

• 
  A
• 
  B
• 
  C
• None of these D