22620.Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium iodide?
Methane
Ethane
Carbon dioxide
Propane
22621.Phenol can be converted to o–hydroxybenzaldehyde by
Kolbe's reaction
Reimer–Tiemann reaction
Wurtz reaction
Sandmeyer's reaction
22622.Which one of the following can be oxidised to the corresponding carbonyl compound?
o–Nitrophenol
Phenol
2–methyl–2–hydroxy propane
2–hydroxy propane
22623.Methyl phenyl ether can be obtained by reacting
phenolate ions and methyl iodide
methoxide ions and bromobenzene
methanol and phenol
bromobenzene and methyl bromide
22624.A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a fruity smell was formed. The liquid was
HCHO
CH3COCH3
CH3COOH
CH3OH
22625.RCH2CH2OH can be converted to RCH2CH2COOH by the following sequence of steps
KNC, H3O+
PBr3, KNC, H2/P+
PBr3, KNC, H3O+
HCN, PBr3, H3O+
22626.The best method to prepare cyclohexene from cyclohexanol is by using
HBr
conc. H3PO4
conc. HCl + ZnCl2
conc. HCl
22627.Catalytic dehydrogenation of a primary alcohol gives a
ketone
aldehyde
secondary alcohol
ester
22628.Which of the following will not be soluble in sodium hydrogen carbonate?
2,4,6–trinitrophenol
Benzoic acid
o–Nitrophenol
Benzenesulphonic acid
22629.Which of the following conditions are used for the conversion of ethanol to ethylene?
dil. H2SO4 / 100°C
dil. H2SO4 / 140°C
Conc. H2SO4 / 70°C
Conc. H2SO4 / 170°C
22630.The compound on dehydrogenation gives a ketone. The original compound is
tertiary alcohol
secondary alcohol
primary alcohol
carboxylic acid
22631.The compound which gives turbidity immediately with Lucas reagent at room temperature is _____.
2–methyl propan–1–ol
butan–1–ol
butan–2–ol
2–methyl propan–2–ol
22632.The correct order of acid strength of the following compounds is
A. Phenol
B. p–Cresol
C. m–Nitrophenol
D. p–Nitrophenol
A. Phenol
B. p–Cresol
C. m–Nitrophenol
D. p–Nitrophenol
A > B > D > C
C > B > A > D
D > C > A > B
B > D > A > C
22633.Formation of diethyl ether from ethanol is based on a
dehydration reaction
dehydrogenation reaction
hydrogenation reaction
heterolytic fission reaction
22634.An organic compound A containing C, H and O has a pleasant odour with boiling point of 78°C. On boiling A with concentrated H2SO4, a colourless gas is produced which decolourises bromine water and alkaline KMnO4. The organic liquid A is
C2H5COOCH3
C2H5OH
C2H5Cl
C2H6
22635.Ethanol is converted into ethoxy ethane,
by heating excess of ethanol with conc. H2SO4 at 140°C
by heating Ethanol with excess of conc. H2SO4 at 443 K
by treating with conc. H2SO4 at room temperature
by treating with conc. H2SO4 at 273 K
22636.Which of the following compounds has highest boiling point?
Propan–1–ol
n–Butane
Chloroethane
Propanal
22637.The products formed when diethyl ether is reacted with cold HI are
2C2H5OH
2C2H5I + H2O
C2H5I + C2H5OH
C2H5–O–O–C2H5+H2O
22638.Ethyl chloride is converted into diethyl ether by
Perkin's reaction
Grignard reagent
Wurtz reaction
Williamson's synthesis
22639.When benzenesulfonic acid and p–nitrophenol aretreated with NaHCO3, the gases released respectively are
SO2, NO2
SO2, NO
SO2, CO2
CO2, CO2