ECAT Pre Engineering MCQ Test With Answer for Chemistry Full Book

• 99.2% A
• 99.5% B
• 90.5% C
• 96.2% D

Which among the following species has the highest ionization energy?

• Ne A
• F B
• Li C
• B D

Vegetables oils are:

• Unsaturated fatty acids A
• Glycerides of unsaturated fatty acids B
• Essential oils obtained form plants C
• None of these D

CO+ is an example of

• Stable molecule A
• Anionic molecule ion B
• Cationic molecular ion C
• Free radical D

Aledehydes ketones can be prepared form alcohols by their:

• Reduction A
• Oxidation B
• Decomposition C
• Synthesis D

For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test

• HCHO and CH₃CHO A
• CH₃CHO and CH₃COCH B
• CH₃COCH₃and C₆H₅COCH₃ C
• CH₃COOH and CH₃COOCH₃ D

A standard hydrogen electrode (S.H.E) consists of a platinized platinum electrode dipped in 1 molar solution of H⁺ions and hydrogen gas is passed at a pressure of

• One pascal A
• One kilo pascal B
• One atmoshpere C
• Then atmoshpere D

Water pollution is mainly due to

• Sulphure dioxide A
• Carbon dioxide B
• Oxygen C
• Industrial discharges D

Ionic Solids are characterized by

• Low melting points A
• Good conductivity in solid state B
• High vapour pressure C
• Solubility in polar solvents D

Selection of filter paper depends upon sizes of particles to be:

• Tested A
• ^Filtered B
• Checked C
• All of above D

Which one of the following is not a nuclelphile

• H₂O A
• H₂S B
• BF₃ C
• NH₃ D

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

• Ethyle chloride A
• Ethyle alcohol B
• Carboxylic acid C
• None of these D

f-block elements are called :

• Alkali metal A
• Alkakline earth metals B
• Transition elements C
• Electron deficient elements D

Which is a good nucleophile?

• F^-1 A
• Cl^-1 B
• Be^-1 C
• I^-1 D

The molecule of ethane possess which hybrization

• sp³ A
• sp² B
• sp C
• sp²d D

In the ground state of an atom the electron is present

• In the nucleus A
• In the second shell B
• Nearest to the nucleus C
• Farthest from the nucleus D

The cell which generates electricity as a result of spontaneous oxidation-reduction reaction is called

• Electrolytic cell A
• Nelson's cell B
• Galvanic cell C
• Down's cell D

Nitration of phenol gives

• o-nitrophenol A
• p-nitrophenol B
• m-nitrophenol C
• Both o and p-nitrophenol D

Ethanol containing some methanol is called

• Absolute spirit A
• Rectified spirit B
• Power alcohol C
• Methylated spirit D

What is the name of the comlex [Ni(CO)₄]

• Tetracarbonylnickel (o) A
• Tetracabonylnickel B
• Tetracabonylnickel (II) C
• Tetracabonylnickel (IV) D

Gases shows uniform behavior toward their :

• Internal conditions A
• External conditions B
• Internal and external conditions C
• None of above D

All alkali metals react with acetylene to form acetylides except

• Li A
• Na B
• K C
• Rb D

Enzymes are catalysts which contain other than carbon and hydrogen one other element

• Oxygen A
• Sulphur B
• Phosphorus C
• Iodine D

Which of the following is a polyamide?

• Nylon A
• Orlon B
• Teflon C
• Terylene D

Which the increase in carbon number of solubility of an alcohol

• Increases A
• Decreases B
• Remains unaffected C
• None of these D

The stroids of fungi and yeast and yeast are called:

• Vitamin D A
• Vitamin D₂ B
• Ergostrol C
• Cholestrol D

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

• Vertical relationship A
• Oblique relationship B
• Diagonal relationship C
• None D

• 
  A
• 
  B
• 
  C
• 
  D

Ozonolysis of benzene gives

• nitration A
• sulphonation B
• ozonide C
• glyoxal D

The only alcohol that can be prepared by the indirect hydration of alkene is

• ethyl alcohol A
• propyl alcohol B
• isobutyl alcohol C
• methyl alcohol D