ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

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

Maximum number of active hydrogens are present in

• Acetic acid A
• Glycerol B
• Methane C
• Methanol D

The formula of secondary alcohol is

• R - OH A
• R - CH₂OH B
• R₂CHOH C
• R₃COH D

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

Which of the following groups will increase the acidity of phenol?

• -NO₂ A
• -CN B
• -X (halogens) C
• All D

Ethanol is prepared in Pakistan form fermentation of:

• Starch A
• Sugar B
• Glucose C
• Molasses D

Compound X has molecular formula C₁₀H₁₄O and is unreactive towards mild oxidising agents. What is the structure of the compound formed by dehydration of X

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following is an isomer of ethanol

• CH₃OCH₃ A
• C₂H₅OC₂H₅ B
• CH₃OH C
• C₂H₅OH D

Phenol is also known as

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

Which compound shows more hydrogen bonding?

• C₂H₆ A
• C₂H₅Cl B
• CH₃----O----CH₃ C
• C₂H₅OH D

Salol is prepared from

• Salicylic acid and phenol A
• Salicylic acid and methyl alcohol B
• Both C
• None D

Diethyl ether is obtained by Williamsons synthesis using

• Ethanol + Na + C₂H₅Br A
• Ethanol + Mg + C₂H₅Br B
• Methanol + Na + CH₃Br C
• Methanol + Mg + CH₃Br D

Ethyl alcohol is industrially prepared from ethylene by

• permanganate oxidation A
• Catalytic reduction B
• Absorbing in H₂SO₄followed by hydrolysis C
• Fermentation D

Which is used as an antifreeze?

• Glycol A
• Ethyl alcohol B
• Water C
• Methanol D

Scientific study of fermentation was first made by

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

Which of the following will not give iodoform test?

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

During dehydration of alcohols to alkenes by heating with conc. H₂SO₄, the initial step is

• Formation of an ester A
• Protonation of alcohol molecule B
• Formation of carbocation C
• Elimination of water 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

Alcohol can be denaturated by adding:

• Acetone A
• Methanol B
• Pyridine C
• All 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 compounds will not react with sodium metal to release hydrogen

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

Which one is primary alcohol?

• Buten-2-ol A
• Propan-2-ol B
• Butaon-1-ol C
• 2,3-Dimethylhexane-4-ol 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

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

Which enzyme is not involved in fermentation of strach

• Diastase A
• Zymase B
• Urease C
• Invertase D

The only alcohol that can be prepared by the indirect hydration of alkene is

• ethyl alcohol A
• propyl alcohol B
• isobutyl alcohol C
• methyl alcohol D

Ethylene reacts will 1% cold alkaline KMnO₄to give

• Oxalic acid A
• Acetone B
• Ethylene glycol C
• Formaldehyde D

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