General
✓✗Ethanol is commercially obtained by the fermentation of
- methane
- sugars (molasses, sugarcane, fruits)
- ethene with ozone
- coal tar
General
✓✗Reduction of aldehydes with H2/Pd or NaBH4 gives
- secondary alcohols
- primary alcohols
- tertiary alcohols
- ethers
General
✓✗Acid-catalysed hydration of 2-methylpropene gives
- butan-2-ol
- 2-methylpropan-1-ol
- butan-1-ol
- 2-methylpropan-2-ol
General
✓✗Oxidation of a primary alcohol with acidified K2Cr2O7 first gives
- an ether
- a ketone
- an aldehyde, which is further oxidised to a carboxylic acid
- an alkene
General
✓✗An alcohol (0.37 g) reacts with excess CH3MgI to give 112 mL of methane at STP (molar volume 22.4 L). The molar mass of the alcohol (one OH group) is
- 46 g mol−1
- 74 g mol−1
- 60 g mol−1
- 88 g mol−1
General
✓✗Heating phenyl methyl ether with HI produces
- iodobenzene
- ethyl chloride
- phenol
- benzene
General
✓✗Which reagent converts ethanol into ethyl chloride with gaseous by-products only?
- PCl5
- PCl3
- SOCl2
- HCl/ZnCl2
General
✓✗Assertion: Propan-1-ol on oxidation with PCC gives propanal.
Reason: PCC is a mild oxidising agent that stops the oxidation at the aldehyde stage.
Reason: PCC is a mild oxidising agent that stops the oxidation at the aldehyde stage.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- Assertion is true but Reason is false
- Both Assertion and Reason are false
General
✓✗The number of structural isomers of C4H10O that are alcohols is
- 7
- 5
- 3
- 4
General
✓✗Ethyl chloride is converted into diethyl ether by
- Perkin’s reaction
- Williamson’s synthesis
- Wurtz synthesis
- Grignard reaction
General
✓✗In the esterification of an alcohol with an acid chloride, pyridine is added to
- dissolve the ester
- act as an oxidising agent
- act as a reducing agent
- neutralise the HCl formed
General
✓✗Diethyl ether can be prepared by heating ethanol with conc. H2SO4 at about
- 273 K
- 443 K
- 573 K
- 413 K
General
✓✗Phenol gives a violet colour with
- neutral ferric chloride solution
- Tollens’ reagent
- Fehling’s solution
- ammoniacal AgNO3
General
✓✗Match List I (compound) with List II (pKa).
Choose the correct answer from the options given below.
| List I | List II |
| P. Ethanol | I. 0.7 |
| Q. Phenol | II. 7.1 |
| R. p-Nitrophenol | III. 10.0 |
| S. Picric acid | IV. 15.9 |
- P-III, Q-IV, R-II, S-I
- P-IV, Q-II, R-III, S-I
- P-IV, Q-III, R-II, S-I
- P-I, Q-III, R-II, S-IV
General
✓✗NaBH4 reduces which of the following to an alcohol?
- Propene
- Ethyl ethanoate
- Propanoic acid
- Propanone