Electric bulb filament is made of__________?
Electric bulb filament is made of__________?
A. Copper
B. Aluminum
C. Lead
D. Tungsten
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Diameter of an atom is in the order of________________?
Diameter of an atom is in the order of________________?A. 0.2m
B. 0.2mm
C. 0.2nm
D. 0.2pmIf the volume of solution is equal to sum of volumes of its all components then the solution_____________?
If the volume of solution is equal to sum of volumes of its all components then the solution_____________?A. will be an ideal solution
B. will be non-ideal solution
C. will show deviations from Raoults law
D. both b & cThe main product of bacterial action is_________________?
The main product of bacterial action is_________________?A. Nox
B. NO2
C. N2O3
D. NOReplacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?
Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?A. Dows process
B. Friedel & Craft acylation
C. Friedel & Craft alkylation
D. Clemmenson reductionThe reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?
The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?A. esterification
B. neutralization
C. hydrolysis
D. saponificationThe O-O linkage is present in__________?
The O-O linkage is present in__________?A. H2S2O3
B.H2SO8
C. H2S4O6
D. H2 S2 O6