CBSE
Multiple Choice QuestionsThe best method to separate the mixture of ortho and para nitrophenol (1 : 1) is
vaporisation
colour spectrum
distillation
crystallisation
Ethyl alcohol reacts with thionyl chloride to give
CH3CH2Cl + HCl
CH3CH2Cl + H2O + SO2
CH3CH2Cl +HCl + SO2
CH3CH2Cl +SO2 + Cl2
Primary alcohols can be obtained from the reaction of R Mg X with
CO2
HCHO
CH3CHO
H2O
When a mixture of 1-hexanol and hexanoic acid in diethyl ether is shaken with an aqueous NaHCO3 solution, then which of the following is right distribution?
| In ether | In sodium bicarbonate solution |
| Sodium hexanoate | 1- hexanol |
| 1- hexanol | Hexanoic acid |
| 1- hexanol | Sodium hexanoate |
| Hexanoic acid | 1- hexanol |
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with
PCl3
PCl5
SOCl2 in presence of pyridine
dry HCl in the presence of anhydrous ZnCl2
Which is used in alcoholic beverages ?
Methanol
Ethanol
Phenol
Glycerol
Hydrolysis of phenyl isocyanide forms
benzoic acid
formic acid
acetic acid
None of these
The enzyme which can catalyse the conversion of glucose to ethanol is
zymase
invertase
maltase
diastase
The correct order of increasing acidic strength is
phenol < ethanol < chloroacetic acid < acetic acid
ethanol < phenol < chloroacetic acid < acetic acid
ethanol < phenol < acetic acid < chloroacetic acid
chloroacetic acid < acetic acid < phenol < ethanol
Lucas reagent is
anhy. ZnCl2 and NH3
anhy. ZnCl2 and CaCl2
anhy. ZnCl2 and conc. HCl
anhy. ZnCl2 and conc. HCl gas
