Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?
Correct answer: D. both A & C
- A. formaldehyde
- B. ketone
- C. ethylene epoxide
- D. both A & C
Explanation
Formaldehyde reacts with a Grignard reagent to give a primary alcohol after hydrolysis, and ethylene oxide also gives a primary alcohol because epoxide opening leaves the hydroxyl group at a terminal carbon. Thus both reactants can produce straight-chain primary alcohols. Students may select only formaldehyde because it is the standard reagent taught for primary alcohol formation.
Last updated
About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
Practise Alcohols and Phenols
535 free Alcohols and Phenols MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
3 Moles of ethanol reacts with 1 mole of PBr3 to form 3 moles of bromoethane and 1 mole of X. Which of the following is X?
95% ethanol is called_________________?
A biochemical process in which large molecules are broken down into smaller molecules in the presence of enzymes secreted by microorganism is called?
A tertiary alcohol is not readily oxidised because the carbon carrying the hydroxyl group
Absolute alcohol is obtained when rectified spirit is treated with__________________?