ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Alcohol can be denaturated by adding:

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

Taste of lower alcohols is:

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

Ethylene reacts will 1% cold alkaline KMnO₄to give

• Oxalic acid A
• Acetone B
• Ethylene glycol C
• Formaldehyde D

Which compound does not show hydrogen bonding with water

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

Dehydration of glycerol give

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

Which compound will not dissolve in H₂O

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

Organic acid without a carboxylic acid group is

• Ascorbic acid A
• Vinegar B
• Oxalic acid C
• Picric acid D

Which one is used as a fuel for internal combustion engines in many European countries and Brazil

• C₂H₅OH A
• CH₃OH B
• CH₃COOH C
• C₂H₂ 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

The reaction of sodium with ethanol gives

• CH₃OH A
• NaH B
• H₂O C
• H₂ D

When sodium metal reacts with alcohols

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

Which one is primary alcohol?

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

How many alcohol (including both structural isomers and stereoisomers) can have the molecular formula C₄H₁₀O

• 3 A
• 4 B
• 5 C
• 6 D

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

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

Methyl alcohol is not used

• As a solvent A
• A an anti-freezing agent B
• As a substitute for petrol C
• For denaturing of ethyl alcohol D

A compound is soluble in conc. H₂SO₄, it does not decolourise bromine in carbon tetrachloride but is oxidized by chromic anhydride in aqueous sulphuric acid within two seconds, turning orange solution to blue, green and then opaque. The original compound is

• Primary alcohol A
• Tertiary alcohol B
• alkene C
• ether D

Which one of the following correctly describes the acid properties of phenol

• Stronger than HCI A
• Stronger than carboxylic acid B
• An acid stronger than carbonic acid C
• An acid weaker than carboxylic acid 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

Which of the following is weakly acidic in nature

• Alcohol A
• Phenol B
• Aidehyde C
• Amide D

95% alcohol is called

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

Derivative of water is:

• Alcohals A
• Phenols B
• Either C
• Phenol D

Which the increase in carbon number of solubility of an alcohol

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

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

• 
  A
• 
  B
• 
  C
• 
  D

The reaction of aromatic acyl chloride and phenol in the presence of a base NaOH or pyridine is called

• Kolbe's reaction A
• Perkin's reaction B
• Sandmeyer's reaction C
• Schotten Baumann reaction D

Which compound contains - OH in their molecule

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

Which of the following groups will increase the acidity of phenol?

• -NO₂ A
• -CN B
• -X (halogens) C
• All D

Alcohols are derivatives of:

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

• Aqueous bromine A
• Dilute HNO₃ B
• Dilute HCI C
• CH₃COCI D

Oxidation of methyl alcohol gives

• Formaldehyde A
• Acetone B
• Ester C
• Acid D

Picric acid is

• 2, 4, 6-Trinitrotoluene A
• 2, 4, 6-Tribomoethanol B
• 2, 4,6-Trinitrophenol C
• Para-Nitrophenol D