ECAT Pre Engineering MCQ Test With Answer for Chemistry Full Book

• Elimination Esterification A
• Elimination Isomerisation B
• Oxidation Exterification C
• Oxidation Oxidation D

Clemensen's reduction of ketones is carried out in

• H₂with Pd catalyst A
• Glycol with KOH B
• LiAIH₄in water C
• Zn-Hg with conc. HCl D

• s A
• p B
• d C
• f D

DDT is formed from

• Benzene and Chlorobenzene A
• Chloral and Chlorobenzene B
• Chloral and Benzene C
• Chlorobenzene and chlorine D

Benzene does not undergo polymerization and it is also resistant to

• Reduction A
• Oxidation B
• Alkylation C
• Ozonolysis D

Benzene is not prepared from

• Acetylene A
• Phenol B
• Benzoic acid C
• Bromo benzene D

Which compound is more soluble in water?

• C₂H₅OH A
• C₅H₅OH B
• CH₃OCH₃ C
• n-Hexanol D

• Zn A
• H B
• S C
• O D

Halogens on treating with silver salts of acids give

• Alcohol A
• Ester B
• Phenol C
• Alkyl halide D

Internal energy of a system is equal to

• Kinetic energy of particles A
• Potential energy due to binding forces between particles B
• Sum of kinetic energy plus potential energy of the particles C
• Heat contents D

The 95.5% mass of Lithosphone is made of 11 elements i.e. O₂, Si, Al, Fe, Ca, Na, K, Mg, Ti, H₂and P. which element is present in trace amount

• Iodine A
• Bromine B
• Lead C
• Carbon D

Refrectrometric method is used when

• Reactions involving absorption of I.R. or U. V A
• Reactions involving change of refractive index B
• Reactions involving ions C
• Change of optical activity D

Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to

• The formation of less stable carbonium ion A
• Resonance stabilization B
• Larger carbon-halogen bond C
• The inductive effect D

Effective magnetic moment of Sc³⁺ion is

• 1.73 A
• 0 B
• 5.92 C
• 2.83 D

Which one is a polymer compound?

• SO₂ A
• CO₂ B
• CH₄ C
• PVC D

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

• Hydrolysis A
• Electrolysis B
• Hydrogenation C
• Hydrogenolysis D

Angle is OF₂is

• 120⁰ A
• 180⁰ B
• 105⁰ C
• 102⁰ D

Steel may be manufacture by two processes which two are correct

• Open hearth process and besemer process A
• Open hearth process and Haber process B
• Bassemer process and Haber process C
• Contact process and Haber process D

Ethylene polymerizes at 100 atm pressure and 400°C to give

• Polybenzene A
• Polyalcohol B
• Polypropylene C
• Polyethylene D

In the periodic table, the element with atomic number 16 will be placed in the group

• Fourteen A
• Sixteen B
• Thirteen C
• Fifteen D

Two moles of acetic acid are heated with P₂O₅the product formed is

• 2 moles of ethyl alcohol A
• Formic anhydride B
• Acetic anhydride C
• 2 moles of methyl cyanide D

One mole of ethanol and one mole of ethane have an equal

• Mass A
• Number of atoms B
• Number of electrons C
• Number of molecules D

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

• Combining with oxygen to form carbon dioxide A
• Destruction of hemoglobin B
• Preventing reaction between oxygen and hemoglobin C
• Forming stable compound with hemoglobin D

Naturally occurring lipids are called

• Fats A
• protein B
• Steroids C
• None D

The formula of curprite is

• Cu₂S A
• Cus B
• Cu₂O C
• CuCO₃ D

Primary and secondary alcohols on action of red hot copper give

• Aldehydes and ketones respectilvely A
• ketones and aldehydes respectively B
• Only aldehydes C
• Only ketones D

If we remove one hydrogen atom from an alkane we obtain a group called

• Acetyle group A
• Formyle group B
• Alkyle group C
• Ketyle group D

______ reacts with alkalis to give hydrogen

• Be A
• Mg B
• Ca C
• None D

A solution of glucose is 10% The volume to which 1g mole of it dissolved will be :

• 8.1 dm³
  A
• 1.7 dm³
  B
• 1.8 dm³
  C
• 6.1 dm³
  D

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

• CH3 - CH = Ch2 A
• CH3CH = CHCH3 B
• HC = CH C
• H2C = CH2 D