ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

The reaction of sodium with ethanol gives

• CH₃OH A
• NaH B
• H₂O C
• H₂ D

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

The order of reactivity of halogen acids for reaction with C₂H₅OH is

• HCl > HBr > HI A
• HI > HBr > HCl B
• HBr > HI > HCl C
• HBr > HCl > HI D

C₂H₅OH can be differentiated from CH₃OH by

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

Na reacts with phenol to produce

• H₂gas A
• Benzene B
• CO₂gas C
• CO gas D

Propanone is the product obtained by dehydrogenation of

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

Methanol and ethanol can be distinguished by

• Iodoform test A
• Iucas test B
• Dichromate/H₂SO₄oxidation test C
• Flame test D

Derivative of water is:

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

Alcohol can be denaturated by adding:

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

When alcohol reacts with concentreated H₂SO₄intermediate compound formed as

• carbonium ion A
• alkoxy ion B
• alkyl hydrogen sulphate C
• non of these D

In Lucas test primary alcohol make as oily layer

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

Alcohol reacts with halogen acid to produce

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

Phenol gives ---------- Colour with neutral FeCl₃solution

• Violet A
• Green B
• Red C
• Blue 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

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

Which compound is more soluble in water?

• C₂H₅OH A
• C₅H₅OH B
• CH₃OCH₃ C
• n-Hexanol D

Which of the following is used as anesthetics

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

Phenol is also known as

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

The strongest acid among the following aromatic compound is

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

Phenol is more readily soluble in

• Dil. HCl A
• Both NaOH and HCl B
• NaOH sol C
• Sodium bicarbonate solution D

Phenol is heated with CCl₄and alkaline KOH when salicylic acid is produced.The reaction is known as

• Frledel-Craft reaction A
• Riemer-Tiemann's reaction B
• Rosenmund's reaction C
• Sommelet reaction D

Oxidation of methyl alcohol gives

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

Which structure shows a tertiary alcohol

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

The organic compound, alcohols are much closer to, in structure and hence is also called its derivative:

• Water A
• Oxidizes of lithium oxides B
• Oxidizes of magnesium C
• Oxidizes of aluminium D

Which bond shows maximum hydrogen bonding with water?

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

Ethanol can be converted into ethanoic acid by

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

Carbolic acid is the other name for

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

Rectified spirit contains alcohol about:

• 80% A
• 85% B
• 90% C
• 95% D

Which compound has the maximum repulsion with water?

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