ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Alcohols reacts with Grignard reagent to form

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

Oxidation of ter-alcohol gives:

• Aldehyde A
• Formaldehyde B
• Ketone C
• Alkens D

C₂H₅OH can be differentiated from CH₃OH by

• Reaction with HCl A
• Reaction with NH₃ B
• Iodoform test C
• Solubility in water 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 an isomer of ethanol

• CH₃OCH₃ A
• C₂H₅OC₂H₅ B
• CH₃OH C
• C₂H₅OH 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

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

• 3 A
• 4 B
• 5 C
• 6 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

If an electrophile attacks then ______ bond breaks first

• C - H A
• O - H B
• C - O C
• None of these 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

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

Ethyl alcohol prepared during fermentation is pure:

• 20% A
• 10% B
• 11% C
• 12% 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

The organic compounds which are derivative of hydrocarbons of oxygen are:

• Carbohydrates A
• Phenols B
• Alcohals C
• All of these D

Which of the following is correct?

• Reduction of any aldehyde gives secondary alcohol A
• Reaction of vegetable oil with H₂SO₄gives glycerine B
• Alcoholic iodine with NaOH gives iodoform C
• Sucrose on reaction with NaCl gives invert sugar D

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

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

The strongest acid among the following aromatic compound is

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

To prepare ethanol by fernentation the optimum temp. is

• 10 - 20°C A
• 25 - 30°C B
• 20°C C
• 35°C D

The organic compounds which derivative of hydrocarbons due to oxygen is:

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

Which of the following compound is known as oil of winter green?

• Phenyl benzoate A
• Phenyl salicylate B
• Phenyl acetate C
• Methyl salicylate D

Taste of lower alcohols is:

• Sweet A
• Bitter B
• Our C
• Salty 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 of the following is used as anesthetics

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

Which of the following is known as wood spirit

• Ethyl alcohol A
• Propyl alcohol B
• Methyl alcohol C
• Butyl alcohol D

Ethanol can be converted into ethanoic acid :

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

Ethanol can be converted into ethanoic acid by

• Hydrogenation A
• Hydration B
• oxidation C
• Frmentation D

Mild oxidation of glycerol with H₂O₂/FeSO₄gives

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

The hydroxyl derivatives of aromatic hydrocarbons which have the -OH group directly bonded to the ring C-atom are called

• Alcohols A
• Ketones B
• Esters C
• Phenols D

Either, an organic compound has close resemblance in structure and thus a derivative of:

• Water A
• Oxides of lithium B
• Oxides of magnisium C
• Oxides of aluminium D

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