ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

How many alcohol (including both structural isomers and stereoisomers) can have the molecular formula C₄H₁₀O

• 3 A
• 4 B
• 5 C
• 6 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

Isopropyl alcohol on oxidation gives

• Acetone A
• Ether B
• Ethylene C
• Acetaldehyde D

Phenol was discovered by:

• Hofmann A
• Runge B
• Henderson C
• Bakelite 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

Methyl alcohol is not used:

• As a subsitution for petrol A
• As an anti-freezing agent B
• For denating of ethyle alcohal C
• As a solvent D

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

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

Phenols are derivative of:

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

Picric acid is

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

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

Ethanol containing some methanol is called

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

Absolute alcohol is obtained by adding rectified apirit in alcohol:

• Water A
• Na₂CO₃ B
• NaOH C
• CaO D

Alcohols of low molecular weight are

• Soluble in water A
• Soluble in water on heating B
• Insoluble in water C
• Insoluble in all solvents D

Which compound will not dissolve in H₂O

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

Which of the following is an isomer of ethanol

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

Concentration of rectified spirit is:

• 12% A
• 14% B
• 90% C
• 95% D

Alcohols are named by replacing 'e' of alkane with:

• al A
• ene B
• ol C
• one D

In its reaction with Na, 1 mol of X gives 1 mol of H_2(g). What is X

• CH₃CH₂CH₂CH₂OH A
• (CH₃)₃COH B
• CH₃CH₂CH₂CO₂H C
• CH₃CH(OH)CO₂H D

95% alcohol is called

• Rectified spirit A
• Spirit of wine B
• Spirit C
• Methylated D

The formula of secondary alcohol is

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

Alcohol fermentation is brought about by the action of

• CO₂ A
• O₂ B
• Invertase C
• Yeast D

Organic acid without a carboxylic acid group is

• Ascorbic acid A
• Vinegar B
• Oxalic acid C
• Picric acid D

Ethanol can be converted into ethanoic acid by

• Hydrogenation A
• Hydration B
• Oxidation C
• Fermentation 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

Phenol is used in the preparation of

• Bakelite A
• Phenatherene B
• Cellulose C
• All of these D

Which of the following is correct?

• Reduction of any aldehyde gives secondary alcohol A
• Reaction of vegetable oil with H₂SO₄gives glycerine B
• Alcoholic iodine with NaOH gives iodoform C
• Sucrose on reaction with NaCl gives invert sugar 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

Oxidation of 2-propanol gives

• Propanone A
• Butanone B
• Pentanone C
• None of these D

Oxidation of ter-alcohol gives:

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