ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

Oxidation of methyl alcohol gives

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

Which of the following is an isomer of ethanol

• CH₃OCH₃ A
• C₂H₅OC₂H₅ B
• CH₃OH C
• C₂H₅OH 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

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

• Violet A
• Green B
• Red C
• Blue D

Alcohol reacts with halogen acid to produce

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

Baukelite is a polymer obtained from two monomers

• Phenol and ethanol A
• Phenol and methanol B
• Phenol and methanal C
• Phenol and acetone D

Which bond shows maximum hydrogen bonding with water?

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

Ethyl alcohol is industrially prepared from ethylene by

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

Which compound is called a universal solvent?

• H₂O A
• CH₃OH B
• C₂H₅OH C
• CH₃----O---CH₃ D

3 moles of ethanol react with one mole of phosphorus tribromide to from 3 moles of bromoethane and on mole of X. Which of the following is X?

• H₃PO₄ A
• H₃PO₂ B
• HPO₃ C
• H₃PO₃ D

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

• 3 A
• 4 B
• 5 C
• 6 D

Isopropyl alcohol on oxidation gives

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

Which of the following compounds will not react with sodium metal to release hydrogen

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

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

denaturing of alcohol is done by adding methanol in ethanol:

• 10% A
• 20% B
• 30% C
• 40% D

The formula of secondary alcohol is

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

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

Glucose in the presence of zymase is converted into

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

Which one of the following correctly describes the acid properties of phenol

• Stronger than HCI A
• Stronger than carboxylic acid B
• An acid stronger than carbonic acid C
• An acid weaker than carboxylic acid D

Which compound is more soluble in water?

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

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

• al A
• ene B
• ol C
• one D

The malt-sugar in the presence of yeast or invertase gives

• Fructose A
• Glucose B
• Lignin C
• Alcohol D

Salol is prepared from

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

Alcohols are derivatives of:

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

Concentration of rectified spirit is:

• 12% A
• 14% B
• 90% C
• 95% 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

Phenols are derivative of:

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