ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Sodium phenoxide reacts with CO₂at 400 K and 4.7 atm pressure to give

• Sodium salicylate A
• Salicyl aldehyde B
• Catechol C
• Benzoic acid 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

General formula of alcohol is:

• ROH A
• Ar-OH B
• R-O-R C
• Ph-OH 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

Ethyl alcohol may be identified by

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

Concentration of rectified spirit is:

• 12% A
• 14% B
• 90% C
• 95% D

Alcohols are derivatives of:

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

Oxidation of ter-alcohol gives:

• Aldehyde A
• Formaldehyde B
• Ketone C
• Alkens 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

Alcohol reacts with halogen acid to produce

• Alkyl halides A
• Aldelydes B
• Ketones C
• Alkanes D

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

I-Phenylethanol can be prepared by reaction of benzaldehyde with

• Methyl iodide an Magnesium A
• Methyl bromide B
• Methyl bromide and AIBr₃ C
• C₂H₅l and Mg 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

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

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

Which compound shows hydrogen bonding

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

In Dow's method, phenol can be made from

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

Oxidation of methyl alcohol gives

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

Phenol is also known as

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

Carbolic acid is the other name for

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

A compound of the formula C₄H₁₀O_{reacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is}

• Diethyl ether A
• n-Butyl alcohol B
• Isobutyl alcohol C
• sec-Butyl alcohol 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 structure shows a tertiary alcohol

• CH₃CH₂OH A
• (CH₃)₂CHOH B
• (CH₃)₃COH C
• CH₂OH D

Use of ethanol as:

• Drink A
• Solvent and fuel B
• In beverage C
• All of these D

Glucose in the presence of zymase is converted into

• Alcohol A
• Acid B
• Ethyl alcohol C
• Ketone 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

Picric acid is

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

Phenols are derivative of:

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