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

Question 126:

• JAMB 2007

The reddish-brown rust on iron roofing sheets consists of

A. Fe³⁺(H₂O)₆
B. FeO.H₂O
C. Fe₂O₃.3H₂O
D. Fe₃O₄.2H₂O

Question 127:

• JAMB 2007

The salt formed from strong acid and a strong base is

A. Complex
B. Neutral
C. Basic
D. Acidic

Question 128:

• JAMB 2008

What is the pH of 0.001 mol dm^-3 solution of sodium hydroxide

A. 14
B. 13
C. 12
D. 11

Question 129:

• JAMB 2008

Insoluble salts can be prepared by

A. Titrating an alkali against an appropriate acid
B. Reacting an acid with trioxocarbonatr (IV) salt
C. Directing combination of the elements which make up the salt
D. Mixing two soluble compounds containing the metallic radical and the acidic radical

Question 130:

• JAMB 2010

The acid that is used to remove rust is

A. Boric
B. Hydrochloric
C. Trioxonitrate (V)
D. Tetraoxosulphate (VI)