Chromatography is used to separate _________ ?
Chromatography is used to separate _________ ?
A. Solution
B. Mixtures
C. Molecules
D. Atoms
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Alkanes are also known as________________?
Alkanes are also known as________________?A. saturated hydrocarbon
B. unsaturated hydrocarbon
C. paraffins
D. both A & CA malleable solid is one which can be_________________?
A malleable solid is one which can be_________________?A. Converted into wires
B. Converted into thin sheets
C. Melted easily
D. All of the aboveThe processes of effusion and diffusion are best understand by________________?
The processes of effusion and diffusion are best understand by________________?A. Daltons law
B. Avogadros law
C. Grahams law
D. Charles lawWhat is the molecular weight of Ammonia (NH3) ________ ?
What is the molecular weight of Ammonia (NH3) ________ ?A. 17.031 g/mol
B. 18.031 g/mol
C. 19.031 g/mol
D. 27.033 g/molUnit of Kc is_______________?
Unit of Kc is_______________?A. moles2dm+6
B. moles-2dm+6
C. moles+2dm-6
D. Kc may or may not have unitsThe best method of preparation of alkyl halides is a reaction of alcohol with__________________?
The best method of preparation of alkyl halides is a reaction of alcohol with__________________?A. Zn / HCI
B. SOCl2 / Pyridine
C. PCI3
D. PCI5