Which of the following separation is routinely applied in the petroleum industry
Filtration
Chromatography
Evaporation
Fractional crystallization
Fractional distillation
Correct answer is E
No explanation has been provided for this answer.
Electrons are present in metals but not in salt solutions
Metals are conductors while salts are electrolytes
Electricity is carried by mobile elrctrons in metals but by ions is aqueous salt solution
salts ionize in aqueous solutions while metals do not
Metals are reducing agents while salts are not
Correct answer is C
No explanation has been provided for this answer.
Fractional distillational
Recrystallization
Filtration
Paper chromatography
Evaporation
Correct answer is D
No explanation has been provided for this answer.
What is the value of n in the following equation? XO-4 +8H + + ne- → X2 + + 4H2O
2
3
4
5
6
Correct answer is D
No explanation has been provided for this answer.
Which of the following groups contains entirely linear molecules?
H 2NH3O 2
CO2NH 3 2
H 2CH4N2
CO2H2N2
CH 4O 2CO 2
Correct answer is D
No explanation has been provided for this answer.