Crystallization
Chromatography
Filtration
Sublimation
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds would react with ethanoic acid to give a sweet smelling liquid?
Alkane
Alkanol
Alkanal
Alkyne
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds determines the octane rating of petrol?
1,2,3 - trimethlpentane
2,3,5 - trimethyloctane
2,3,5 - trimethylpentane
2,2,4 - trimethylpentane
Correct answer is D
No explanation has been provided for this answer.
electrons flow from the metal electrode, M(s) to hydrogen electrode, H2(g)
electrons fow from hydrogen electrode, H2(g) to metal electrode, M(s)
the flow of current is high
there is equilibrium between the flow of electrons from the hydrogen electrode, H2(g) to metal electrode, M(s)
Correct answer is B
No explanation has been provided for this answer.
Copper
Lead
Magnesium
Silver
Correct answer is C
No explanation has been provided for this answer.