Chemistry 2005 Waec Past Questions and Answers

Question 26 :

• WAEC 2005

Which of the elements will burn in excess oxygen to form a product that is neutral to litmus?

A. Carbon
B. Hydrogen
C. Sulphur
D. Sodium

Question 27 :

• WAEC 2005

The main difference between a primary cell and a secondary cell is that the primary cell

A. Is an electrolytic cell but the secondary is not
B. Cannot be recharged but the secondary cell can
C. Can be recharged but the secondary cell cannot
D. Contains electrodes but the secondary cell does not

Question 28 :

• WAEC 2005

Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu²_(aq) + 2e^- → Cu_(s)

A. 32
B. 64
C. 128
D. 256

Question 29 :

• WAEC 2005

Reaction undergone by compounds with the general formula C_n H_2n+2 include

A. Addition
B. Esterification
C. Substitution
D. Dehydration

Question 30 :

• WAEC 2005

What is the major product formed when C₂H₅OH reacts with CH₃COOH?

A. C₂H₅COOCH₃
B. C₂HCOCH₃
C. CH₃COOC₂H₅
D. C₃H₇COOH