ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Taste of lower alcohols is:

• Sweet A
• Bitter B
• Our C
• Salty D

Ethanol can be converted into ethanoic acid :

• Hydrogenation A
• Hydration B
• Oxidation C
• Fermentation D

Which compound has the maximum repulsion with water?

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

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is

• Oxalic acid A
• Glyoxal B
• Formic acid C
• Ethanol D

Which compound shows hydrogen bonding

• C₂H₆ A
• C₂H₅CI B
• CH₃-O-CH₃ C
• C₂H₅OH D

C₂H₅OH can be differentiated from CH₃OH by

• Reaction with HCl A
• Reaction with NH₃ B
• Iodoform test C
• Solubility in water D

An organic compound A reacts with methyl magnesium iodide to form an addition product which on hydrolysis forms the compound B . Compound B gives blue colour salt in Victor Meyer's test.The compounds A and B are respectively

• Acetaldehyde, tertiary butyl alcohol A
• Acetaldehyde, ethyl alcohol B
• Acetaldehyde, isopropyl alcohol C
• Acetone, isopropyl alcohol D

Which the increase in carbon number of solubility of an alcohol

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

Dehydration of glycerol give

• Propane A
• Propene B
• Acrolein C
• Benzene D

Alcohols react with carboxylic acid to produce the class of compounds known as

• Grignard's reagent A
• Esters B
• Amides C
• None of these D

Compound X has molecular formula C₁₀H₁₄O and is unreactive towards mild oxidising agents. What is the structure of the compound formed by dehydration of X

• 
  A
• 
  B
• 
  C
• 
  D

When sodium metal reacts with alcohols

• Hydrogen gas evolves A
• Sodium hydroxide is obtained B
• Alcohol is reduced C
• Alcohol is polymerised D

How many secondary alcoholic groups are present in the structure of glucose OHC CHOH CHOHCH OH CHOH CH₂OH

• 1 A
• 2 B
• 3 C
• 4 D

Which is not property in ether:

• Very weak hydogen bonding A
• High b.p B
• Slightly soluble C
• Inflammable D

Which one of the following reacts immediately with conc. HCI in the presence of ZnCI₂

• Primary alcohol A
• Secondary alcohol B
• Tertiary alcohol C
• Ether D

What will react differently with the two isomeric pentols, (CH₃)₃CCH₂OH and (CH₃)₂CH CH₂CH₂OH

• Acidified (aq) KMnO₄ A
• Concentrated H₂SO₄ B
• PCl C
• Sodium D

Propanone is the product obtained by dehydrogenation of

• 2-Propanol A
• 1-Propanol B
• Isobutyl alcohol C
• Propanethoil D

Absolute alcohol is obtained by adding rectified apirit in alcohol:

• Water A
• Na₂CO₃ B
• NaOH C
• CaO D

Alcohol can be denaturated by adding:

• Acetone A
• Methanol B
• Pyridine C
• All D

Which compound contains - OH in their molecule

• Alcohol A
• Phenol B
• Alcohol and phenol C
• Ether D

The boiling point of glycerol is more than propanal because of

• Hybridisation A
• H-bonding B
• Resonance C
• All these factors D

Industrial alcohol may be denaturated by the addition of

• Methyl alcohol A
• Acetone B
• Pyridine C
• Any of the above reagent D

• 1-bromobutane A
• 2-bromobutane B
• 1-bromo-2-methyl propane C
• 2-bromo-2-methyl propane D

Which of the following statements is correct?

• Phenol is less acidic than ethyl alcohol A
• Phenol is more acidic than ethanol B
• Phenol is more acidic than carbonic acid C
• Phenol is more acidic than CH₃COOH D

Ethanol is prepared in Pakistan form fermentation of:

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

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

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO₄

• Butanol A
• Butanoic acid B
• Butanone C
• Butane D

Carbolic acid is the other name for

• Methanol A
• Ethanol B
• Propanol C
• Phenol D

When phenol is distilled with zinc dust. It is reduced to

• Benzene A
• Benzaldehyde B
• Toluene C
• Hexanol D

95% alcohol is called

• Rectified spirit A
• Spirit of wine B
• Spirit C
• Methylated D