ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Which is not property in ether:

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

Phenol is also known as

• Acetic acid A
• Carbolic acid B
• Tararic acid C
• Trichloroacetic acid D

Oxidation of ter-alcohol gives:

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

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

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

The boiling points of alcohols are higher than the corresponding alkanes, This is because

• Of hydrogen bonding existing between molecules of alcohols A
• Alkanes are dipolar compounds B
• Alcohols are sweet in taste C
• Alcohols are soluble in water 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

Which bond shows maximum hydrogen bonding with water?

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

Which of the following process is employed to convert alkyl halide into alcohol?

• Addition A
• Substitution B
• Dehydrohalogenation C
• Molecular rearrangement D

To prepare ethanol by fernentation the optimum temp. is

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

Which of the following will not give iodoform test?

• Ethanol A
• Ethanal B
• Isopropyl alcohol C
• Benzyl alcohol D

Picric acid is

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

Industrial alcohol may be denaturated by the addition of

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

Scientific study of fermentation was first made by

• Buchner A
• Liebig B
• Biot C
• Pasteur D

Taste of lower alcohols is:

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

which enzyme is not involved in the fermentation of starch ?

• Diastase A
• Zymase B
• Urease C
• Invertase 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 statement in not correct about alcohol?

• Ethyl alcohol is heavier than water A
• Ethyl alcohol ecaporates more quickly B
• Alcohol with less number of carbon atoms is more soluble in water than alcohol with more number of carbons atoms C
• Alcohol produces H₂by reaction with sodium metal D

Ethanol can be converted into ethanoic acid by

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

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

Alcohols are derivatives of:

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

Primary and secondary alcohols on action of red hot copper give

• Aldehydes and ketones respectilvely A
• ketones and aldehydes respectively B
• Only aldehydes C
• Only ketones D

Ethyl alcohol may be identified by

• Ring test A
• Iodoform test B
• Tollen's test C
• Bazeyer's test 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

When phenol is reduced in the presence of Zn dust, we get

• Cyclohexene A
• Cyclohexane B
• Benzene C
• Benzyne D

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

In Lucas test primary alcohol make as oily layer

• Immediately A
• In 10 mins B
• On heating C
• Not D

Grignard reagent on reaction with a ketone forms

• Tertiary alcohol A
• Secondary alcohol B
• Primary alcohol C
• Carboxylic acid D

Ethanol containing some methanol is called

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

Phenols are derivative of:

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

Which of the following is known as wood spirit

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