Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Non-polar molecules are held together by
co-ordinate bond
covalent bond
electromagnetic force
hydrogen bond
Van der Waals forces
Correct answer is E
No explanation has been provided for this answer.
The Ideal Gas Law is expressed mathematically as
P1 /T1 = P2/T2
P1/V1 = P2V2
PV =nRT
PV =KT
V1/T1 = V2/T2
Correct answer is C
The empirical relationships among the volume, the temperature, the pressure, and the amount of a gas can be combined into the ideal gas law, PV = nRT.
The furring of kettles and boilers are caused by
calcium hydroxide
calcium hydrogen trioxocarbonate (IV)
calcium trioxocarbonate (IV)
calcium tetraoxocarbonate
magnesium tetraoxocarbonate (VI)
Correct answer is C
The furring of kettles or boilers - this is as a result of the decomposition of Ca(HCO3)2 into CaCO3, and this coats the inside of a kettle or boiler used in heating water containing dissolved Ca(HCO3)2.
Which of the following metals is NOT extracted by electrolysis?
Aluminium
Calcium
iron
Magnesium
Sodium
Correct answer is C
No explanation has been provided for this answer.