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.
40g
52g
100g
26g
14g
Correct answer is E
1000 cm3 of KOH contains 56 gm of KOH
250 cm3
of 1M KOH will contain (250)/(1000) x (56)/(1) = 14gms
Brass is an alloy containing copper and?
zinc
tin
aluminium
silver
lead
Correct answer is A
Brass is an alloy containing copper and zinc
Which of the following processes NOT lead to a chemical change?
Strirring iron in sulphur (IV) acid
Stirring sodium carbonate in water
Stirring glucose in concentrated sulphur (IV) acid
Mixing sulphur (IV) acid with potassium carbonate
Titrating an acid against base
Correct answer is B
Stirring Na2CO3 in water does not lead to a chemical change
1,160 kJ mol-1
1,180 kJ mol-1
1,560 kJ mol-1
1,600kJ mol-1
1,680 kJ mol-1
Correct answer is E
The heat of combustion of methane is 1680 KJ mol-1
Which of the following is NOT a redox reaction?
2HNO2 + 2HI → 2H2O + 2NO + I2
Zn + H2SO4 → ZnSO4 + H2
Ca(HCO3)2 → CaCO3 + H2O + CO2
4FeO + O2 → 2Fe2O3
2Na + Cl2 → 2NaCl
Correct answer is C
Ca(HCO2) → CaCO3 + H2O + CO2 is not a redox reaction