ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Which compound will not dissolve in H₂O

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

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

C₂H₅OH can be differentiated from CH₃OH by

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

Ethyl alcohol on oxidation with K₂Cr₂O₇gives

• Acetic acid A
• Acetaldehyde B
• Formaldehyde C
• Formic acid D

Alcohols reacts with Grignard reagent to form

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

Which the increase in carbon number of solubility of an alcohol

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

Carbolic acid is the other name for

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

On heating glycerol with conc. Sulphuric acid a compound with unpleasant odour is obtained. The compound is

• Methyl alcohol A
• Formic acid B
• Prop-2-enal C
• Glycerol sulphate D

Concentration of rectified spirit is:

• 12% A
• 14% B
• 90% C
• 95% 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 isomers of C₅H₁₁OH gives, on dehydration, the greatest number of different alkenes

• 
  A
• 
  B
• 
  C
• 
  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

Grignard reagent on reaction with a ketone forms

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

Which of the following is used as anesthetics

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

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

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

Which is not property in ether:

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

In Lucas test teriary alcohol make an oily layer

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

The strongest acid among the following aromatic compound is

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

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

• Cyclohexene A
• Cyclohexane B
• Benzene C
• Benzyne 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

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

• Benzene A
• Benzaldehyde B
• Toluene C
• Hexanol 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

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is

• Oxalic acid A
• Glyoxal B
• Formic acid C
• Ethanol 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

Which of the following will not give iodoform test?

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

Which compound contains - OH in their molecule

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

In Lucas test primary alcohol make as oily layer

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