Which of the following ether is formed from alcohol and diazomethane?
1-ethoxypropane
ethoxyethane
1-methoxypropane
2-ethoxypropane
3-methylpentan-3-ol will be prepared from
ethyl formate and methyl magnesium bromide
ethyl ethanoate and ethyl magnesium bromide
ethyl propanoate and methyl magnesium bromide
ethyl formate and ethyl magnesium bromide
Which of the following compound forms white precipitate with bromine water?
Nitrobenzene
Phenol
Benzene
All of the above
Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
1-bromo-1-phenylethane
1-chloro-3-methylbutane
Bromoethane
1-chloropropane
A.
1-bromo-1-phenylethane
RX + KOH ROH + KX
(a)
Due to production of compound having chiral carbon, this hydrolysis will lead to the formation of a recemate.
(b)
(c) CH2CH2Br → CH3CH2OH + KBr
Bromo ethane ethanol
(d) CH3CH2CH2Cl + KOH → CH3CH3CH2OH + KCl
1-chloro propane Propanol
Since, products of (b), (c) and (d) do not have any chiral carbon atom, so these cannot form a racemate.
Reaction of which among the following ethers with HI in cold leads to the formation of methyl alcohol?
Ethyl methyl ether
Methyl propyl ether
lsopropyl methyl ether
tert-butyl methyl ether
( +2) 2-methylbutan-1-ol (-) 2-methylbutan -1- ol have different values for which property?
Boiling point
Relative density
Refractive index
Specific rotation
Phenol is a highly corrosive substance, but it 0.2 percent solution is used as
Antibiotic
Antiseptic
Disinfectant
Antihistamine
375 mg of an alcohol reacts with required amount of methyl magnesium bromide and releases 140 mL of methane gas at STP. The alcohol is
ethanol
n-butanol
methanol
n-propanol