Jamb Chemistry Past Questions and Answers

Question 1481:

• JAMB 2008

Which of the following compounds of trioxonitrate (V) will decomposes to give dinitrogen (i) oxide and water when heated?

A. NaNO₃
B. Zn(NO₃)₂
C. Cu(NO₃)₂
D. NH₄NO₃

Question 1482:

• JAMB 2008

When a solution of ammonium trioxocarbonate (IV) is added to a solution of an unknown salt, a white precipitate which is soluble in dilute hydrochloric acid but insoluble in ethanoic acid is formed. This indicates the presence of

A. Ca²⁺
B. Na⁺
C. Zn²⁺
D. K⁺

Question 1483:

• JAMB 2008

Leads is used for making bullets and lead shots because of its

A. Resistance to corrosion
B. Low melting point
C. High density
D. Flexibility

Question 1484:

• JAMB 2008

which of the following gives a precipitate when treated with NaOH solution?

A. AlCl₃
B. NH₄Cl
C. Na₂CO₃
D. CH₃COONa

Question 1485:

• JAMB 2008

The most common ores of iron include

A. Haematite, malachite and limonite
B. Chalcolite, calamine and bornite
C. Magnetite, haematite and bornite
D. Magnetite, chalcolite and bornite