Q47.When enthanol is heated with conc. H2SO4, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is (1) Formaldehyde (2) Formic acid (3) Glycol (4) Ethanoic acid
What This Question Tests
This question requires knowledge of ethanol dehydration to ethene, followed by the reaction of ethene with Baeyer's reagent (cold dilute alkaline KMnO4) to form a glycol.
Concepts Tested
Formulas Used
CH3CH2OH --(conc. H2SO4, Ξ)--> CH2=CH2
CH2=CH2 --(cold dil. alkaline KMnO4)--> HOCH2CH2OH
π NCERT Sections This Tests
7.17 β Give Equations Of The Following Reactions:
Chemistry Class 12 Β· Chapter 7
7.17 Give equations of the following reactions: (i) Oxidation of propan-1-ol with alkaline KMnO4 solution. (ii) Bromine in CS2 with phenol. (iii) Dilute HNO3 with phenol. (iv) Treating phenol wih chloroform in presence of aqueous NaOH.
7.21 β Name The Reagents Used In The Following Reactions:
Chemistry Class 12 Β· Chapter 7
7.21 Name the reagents used in the following reactions: (i) Oxidation of a primary alcohol to carboxylic acid. (ii) Oxidation of a primary alcohol to aldehyde. (iii) Bromination of phenol to 2,4,6-tribromophenol. (iv) Benzyl alcohol to benzoic acid. (v) Dehydration of propan-2-ol to propene. (vi) Butan-2-one to butan-2-ol.
7.7 β Predict The Major Product Of Acid Catalysed Dehydration Of
Chemistry Class 12 Β· Chapter 7
7.7 Predict the major product of acid catalysed dehydration of (i) 1-methylcyclohexanol and (ii) butan-1-ol
π Question Details
- Chapter
- Alcohols Phenols Ethers
- Topic
- Reactions of alcohols
- Year
- 2022
- Shift
- 29 Jul Shift 2
- Q Number
- Q47
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 11: Alcohols, Phenols and Ethers
More from this Chapter
Q68.Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives (1) 2,4,6-trinitrobenzene (2) o-nitrophenol (3) p-nitrophenol (4) nitrobenzene
Q41.The number of stereoisomers possible for a compound of the molecular formula CH3 βCH = CH βCH(OH) βMe is : (1) 3 (2) 2 (3) 4 (4) 6
Q56.The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is : (1) benzoic acid (2) salicylaldehyde (3) salicylic acid (4) phthalic acid
Q43.The edge length of a face centered cubic cell of an ionic substance is 508pm. If the radius of the cation is 110pm, the radius of the anion is (1) 288pm (2) 398pm (3) 618pm (4) 144pm