22600.The most suitable reagent for the conversion of
R–CH2–OH → R–CHO is:
R–CH2–OH → R–CHO is:
K2Cr2O7
CrO3
PCC (Pyridinium Chlorochromate)
KMnO4
22602.Denatured alcohol is
Rectified spirit + methanol + naphtha
Undistilled ethanol
Rectified spirit
Ethanol + methanol
22603.Methanol cannot be dried with anhydrous CaCl2 because
CaCl2 dissolves in it
it is not good dehydrating agent
it forms a solid CaCl2 .4CH3OH
it reacts with CH3OH
22604.The conversion of m–nitrophenol to resorcinol involves respectively
diazotization, reduction and hydrolysis
hydrolysis, diazotization and reduction
reduction, diazotization and hydrolysis
hydrolysis, reduction and diazotization
22605.Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
2,4,6–trinitrobenzene
o–nitrophenol
p–nitrophenol
nitrobenzene
22606.An ether is more volatile than an alcohol having the same molecular formula. This is due to
dipolar character of ethers
alcohols having resonance structures
inter–molecular hydrogen bonding in ethers
inter–molecular hydrogen bonding in alcohols
22607.The reaction which involves dichlorocarbene as an electrophile is
Reimer – Tiemann reaction
Kolbe’s reaction
Friedel – Craft’s acylation
Fittig’s reaction
22608.An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______.
a ketone
an aldehyde
a primary alcohol
a secondary alcohol
22609.Anisole canbe prepared by the action of methyl iodide on sodium phenate. The reaction is called
Fittig’s reaction
Williamson’s reaction
Wurtz’s reaction
Etard’s reaction
22610.Phenol can be distinguished from ethanol by the following reagents except
sodium
NaOH/I2
neutral FeCl3
Br2/H2O
22613.Consider the following reaction:
C2H5OH + H2SO4 → Product
Among the following, which one cannot be formed as a product under any conditions?
Ethylene
Ethyl–hydrogen sulphate
Diethyl ether
Acetylene
22614.An organic compound A (C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is:
iso–butyl chloride
secondary butyl chloride
t–butyl chloride
n–butyl chloride
22615.Isopropyl methyl ether when treated with cold hydrogen iodide gives
isopropyl iodide and methyl iodide
isopropyl alcohol and methyl iodide
isopropyl alcohol and methyl alcohol
isopropyl iodide and methyl alcohol
22616.In the following sequence of reactions,
CH3CH2OH $\xrightarrow{\;P + I_2\;}$ A $\underset{\;\;ether\;\;}{\xrightarrow{Mg}}$ B $\xrightarrow{\;HCHO\;}$ C $\xrightarrow{\;H_2O\;}$ D
the compound ‘D’ is
butanal
n–butyl alcohol
n–propyl alcohol
propanal
22618.Acid catalysed hydration of alkenes except ethene leads to the formation of
mixture of secondary and tertiary alcohols
mixture of primary and secondary alcohols
secondary or tertiary alcohol
primary alcohol
22619.n–propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent:
PCl5
Reduction
Oxidation with Potassium dichromate
Ozonolysis