Acids, bases and salts - Jamb Chemistry Past Questions and Answers

Question 186:

• JAMB 2019

Which of the following describes the chemical property of acids?

A. None of the above
B. Acid + XCO\(_3\) \(\to\) Salt + H\(_2\)O + NH\(_3\)
C. Acid + NaOH \(\to\) Normal salt + CO\(_2\)
D. Acid + X\(_n\)CO\(_3\) \(\to\) Salt + H\(_2\)O + CO\(_2\)

Question 187:

• JAMB 2019

In the reaction between sodium hydroxide and tetraoxosulphate (VI) solutions, what volume of 0.5 molar sodium hydroxide would exactly neutralize 10cm\(^3\) of 1.25 molar tetraoxosulphate (vi) acid?

A. 25cm\(^3\)
B. 10cm\(^3\)
C. 20cm\(^3\)
D. 50cm\(^3\)

Question 188:

• JAMB 2019

The following are isoelectronic ions except

A. Na\(^+\)
B. Mg\(^{2+}\)
C. Si\(^{2+}\)
D. O\(^{2+}\)

Question 189:

• JAMB 2019

X is a substance which liberates CO\(_2\) on treatment with concentrated H\(_2\)SO\(_4\). A warm solution of X can decolorize acidified KMnO\(_4\). X is

A. HCOOH
B. NaHCO\(_3\)
C. FeCO\(_3\)
D. H\(_2\)C\(_2\)O\(_4\)

Question 190:

• JAMB 2020

The products of the thermal decomposition of ammonium trioxonitrate(v) are?

A. Nitrogen (I) Oxide and Water
B. Ammonia and Oxide
C. Nitrogen and Water
D. Nitrogen (IV) Oxide and Water