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Questions and Answers
What is the primary purpose of using phenol in the manufacture of nylon and artificial tannins?
What is the primary purpose of using phenol in the manufacture of nylon and artificial tannins?
- As a catalyst to facilitate polymerization
- As a precursor to develop the necessary functional groups (correct)
- As a starting material for the production of polyamide
- As a solvent to dissolve the reactants
Which reaction involves the formation of a complex compound, resulting in a violet colouration?
Which reaction involves the formation of a complex compound, resulting in a violet colouration?
- Reaction with ferric chloride (correct)
- Elbs persulphate oxidation
- Condensation with phthalic anhydride
- Liebermann's nitroso reaction
What is the product formed when phenol reacts with phthalic anhydride in the presence of concentrated sulphuric acid?
What is the product formed when phenol reacts with phthalic anhydride in the presence of concentrated sulphuric acid?
- Aspirin
- Phenolphthalein (correct)
- Salol
- Phenacetin
What is the purpose of using phenol in the preparation of disinfectants, fungicides, and bactericides?
What is the purpose of using phenol in the preparation of disinfectants, fungicides, and bactericides?
What is the characteristic odour associated with phenol?
What is the characteristic odour associated with phenol?
What is the product of the condensation reaction between phenol and CH2O?
What is the product of the condensation reaction between phenol and CH2O?
What is the colour of the solution when phenol is reacted with NaNO2 and concentrated H2SO4, and then diluted with water?
What is the colour of the solution when phenol is reacted with NaNO2 and concentrated H2SO4, and then diluted with water?
Which of the following is a derivative of phenol used as an antiseptic?
Which of the following is a derivative of phenol used as an antiseptic?
What is the application of phenol in the production of nylon?
What is the application of phenol in the production of nylon?
What is the product of the reaction between phenol and NaNO2 in the presence of concentrated H2SO4?
What is the product of the reaction between phenol and NaNO2 in the presence of concentrated H2SO4?
What is the reason for the higher boiling points and solubility in water of phenols?
What is the reason for the higher boiling points and solubility in water of phenols?
What is the characteristic of phenol that distinguishes it from hydrocarbons of comparable molecular weights?
What is the characteristic of phenol that distinguishes it from hydrocarbons of comparable molecular weights?
What is the reason for the violet colouration of phenol with ferric chloride solution?
What is the reason for the violet colouration of phenol with ferric chloride solution?
What is the effect of the position of the substituent on the strength of phenol as an acid?
What is the effect of the position of the substituent on the strength of phenol as an acid?
What is the reaction of phenol with strong alkalies?
What is the reaction of phenol with strong alkalies?
What is the reason for the acidity of phenol?
What is the reason for the acidity of phenol?
What is the product formed when phenol reacts with alkyl halides in alkali solution?
What is the product formed when phenol reacts with alkyl halides in alkali solution?
Why are phenols more acidic than alcohols?
Why are phenols more acidic than alcohols?
What is the effect of electron-attracting groups on the acidity of phenol?
What is the effect of electron-attracting groups on the acidity of phenol?
Why is the phenoxide ion stable?
Why is the phenoxide ion stable?
What is the product formed when a carboxylic acid is reduced with LiAlH4?
What is the product formed when a carboxylic acid is reduced with LiAlH4?
What is the name of the reduction reaction where aluminium isopropoxide is used as the reducing agent?
What is the name of the reduction reaction where aluminium isopropoxide is used as the reducing agent?
What is the product formed when an ester undergoes alkaline hydrolysis?
What is the product formed when an ester undergoes alkaline hydrolysis?
What is the characteristic of alcohols that distinguishes them from hydrocarbons of comparable molecular weights?
What is the characteristic of alcohols that distinguishes them from hydrocarbons of comparable molecular weights?
What is the effect of hydrogen bonding on the physical properties of alcohols?
What is the effect of hydrogen bonding on the physical properties of alcohols?
Why do phenols have high boiling points?
Why do phenols have high boiling points?
What is the effect of the position of a substituent on the strength of phenol as an acid?
What is the effect of the position of a substituent on the strength of phenol as an acid?
What is the product formed when phenol reacts with sodium hydroxide?
What is the product formed when phenol reacts with sodium hydroxide?
Why is phenol sparingly soluble in water but readily soluble in organic solvents?
Why is phenol sparingly soluble in water but readily soluble in organic solvents?
What is the characteristic of phenol that distinguishes it from hydrocarbons of comparable molecular weights?
What is the characteristic of phenol that distinguishes it from hydrocarbons of comparable molecular weights?
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