ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Which of the following compounds will not react with sodium metal to release hydrogen

• CH₃CH₂CH₃ A
• CH₃CH₂OH B
• C₆H₅OH C
• C₆H₅CH₂OH D

Which enzyme is not involved in fermentation of strach

• Diastase A
• Zymase B
• Urease C
• Invertase D

Which isomers of C₅H₁₁OH gives, on dehydration, the greatest number of different alkenes

• 
  A
• 
  B
• 
  C
• 
  D

Alcohols, phenols and ethers may be considered as derivative of

• Hydrocarbons A
• Benzene B
• Carboxylic acid C
• Water D

Phenols are derivative of:

• Alkanes A
• Alkenes B
• Alkynes C
• Benzene D

Which compound is called a universal solvent?

• H₂O A
• CH₃OH B
• C₂H₅OH C
• CH₃----O---CH₃ D

Na reacts with phenol to produce

• H₂gas A
• Benzene B
• CO₂gas C
• CO gas D

Methanol is prepared from CO and H_{2 using catalyst:}

• ZnO A
• Cr₂O₃ B
• Pt C
• Ni D

Which of the following is the most suitable method for removing the traces of water from ethanol?

• Reacting with Na metal A
• Passing dry HCl through it B
• Distilling it C
• Reacting with Mg D

Mild oxidation of glycerol with H₂O₂/FeSO₄gives

• Glyceraldehyde A
• Dihydroxy acetone B
• Glycerose C
• None D

Methyl alcohol is not used:

• As a subsitution for petrol A
• As an anti-freezing agent B
• For denating of ethyle alcohal C
• As a solvent D

Which of the following is used as anesthetics

• Alcohol A
• Diethylether B
• Phenol C
• Dimethyl ether D

Dow's process is used for the preparation of

• Ester A
• Ethers B
• Alcohols C
• Phenols D

Which one is primary alcohol?

• Buten-2-ol A
• Propan-2-ol B
• Butaon-1-ol C
• 2,3-Dimethylhexane-4-ol D

Treatment of a secondary alcohol with a suitable oxidizing agent (K₂Cr₂O₇) results in the formation of

• Ketone A
• Aidehyde B
• Ether C
• Alkyl halide D

According to Lewis concept ethers behave as:

• Acid A
• Base B
• Acid as well as a base C
• None of them D

In Dow's method, phenol can be made from

• Chlorobenzene A
• Benzene B
• Toluene C
• Benzene sulphonic acid D

Which compound does not show hydrogen bonding with water

• CH₃OH A
• C₂H₅OH B
• CH₃- O - CH₃ C
• C₆H₅OH D

An organic compound 'X' on treatment with acidified K₂Cr₂O₇gives a compound 'Y' which reacts with I₂and sodium carbonate to form Triodomethane. The compound 'X' is

• CH₃OH A
• CH₃CHO B
• CH₃CH(OH)CH₃ C
• CH₃COCH₃ D

denaturing of alcohol is done by adding methanol in ethanol:

• 10% A
• 20% B
• 30% C
• 40% D

Which bond shows maximum hydrogen bonding with water?

• CH₃OH A
• C₂H₅OH B
• CH₃----O----CH₃ C
• C₆H₅OH D

Which compound will not dissolve in H₂O

• C₆H₆ A
• C₂H₅OH B
• CH₃CH₂CH₂OH C
• CH₃- OH D

Phenol is heated with CCl₄and alkaline KOH when salicylic acid is produced.The reaction is known as

• Frledel-Craft reaction A
• Riemer-Tiemann's reaction B
• Rosenmund's reaction C
• Sommelet reaction D

Ethanol is prepared in Pakistan form fermentation of:

• Starch A
• Sugar B
• Glucose C
• Molasses D

• A primary alcohol A
• A secondary alcohol B
• An eher C
• A phenol D

Methanol and ethanol can be distinguished by

• Iodoform test A
• Iucas test B
• Dichromate/H₂SO₄oxidation test C
• Flame test D

The strongest acid among the following aromatic compound is

• Ortho-nitrophenol A
• Para-chlorophenol B
• Para-nitrophenol C
• Meta-nitrophenol D

Phenol is a weak acid. The correct order of acid strength of carboxylic acid, phenol and alcohol is

• Carboxylic acid > phenol > alcohol A
• Carboxylic acid > alcohol > phenol B
• Phenol > carboxylic acid > alcohol C
• Alcohol > phenol > carboxylic acid D

Hydrolytic coversion of sucrose into glucose and fructose is known as

• Induction A
• Inversion B
• Insertion C
• Inhibition D

Which alcohol gives only one oxidation product when wormed with dil acidified K₂Cr₂O₇

• Butan-1-ol A
• Butan-2-ol B
• 2-methyl propan-1-ol C
• 2-methyl propan-2-ol D