Which of the following technique is simple and efficient to purify a substance____________________?
Filtration Sublimation Crystallization Solvent extraction
Voltaic cell is a_________________?
irreversible cell reversible cell alkaline cell all of the above
In a group ionic radius ?
Increases Decreases No change Variable trend
Hydrogen effuses four times more rapidly than volume of an unknown gas molar mass of unknown gas should be_______________?
16 gmol-1 32 gmol-1 48 gmol-1 64 gmol-1
The complete reduction carboxylic acid results in the formation of________________?
Alkyne Alkene Alkane Alcohol
The hydrolysis of Benzenetrizonide will yield three moles of____________________?
Glyoxime Benzaldehyde Glycol Glyoxal
The solution remaining after the formation of crystals is called
Mother liquor Dilute solution Residue both A & B
If internal energy of the system is increased ____________________?
Change in state of the system is increased Temperature of the ystem may rise Chemical reaction may take place All
Which of the following will be acidic_____________?
propyne 1-butyne ethyne all of the above
What is the order of kinetics in the SN1 mechanism ?
Zero First Second Third