Chemistry 2008 Neco Past Questions and Answers

Question 1 :

• NECO 2008

Which of the following compounds is unsaturated?

A. Cyclohexane
B. Methoxyethane
C. 1 ,2-dibromoethane
D. 2,2,3-trimethylpentane
E. 3-methylbut-l-ene

Question 2 :

• NECO 2008

pH is define as ____________

A. [H+]
B. –log [H]
C. –log [H+]
D. Log [H]
E. Log [H+]

Question 3 :

• NECO 2008

Matter is neither created nor destroyed in the course of any chemical reactions is a statement of the law of ____________

A. Combining volumes
B. Conservation of mass
C. Definite proportion
D. Multiple proportion
E. Reciprocal proportion.

Question 4 :

• NECO 2008

Bauxite is the ore of ____________

A. Aluminium
B. Calcium
C. Iron
D. Sodium
E. Magnesium

Question 5 :

• NECO 2008

An element Z has a combining power of 3. Which of the following formulae is correct of its compound?

A. ZS₃
B. ZSO₃
C. ZS0₄
D. Z0₃
E. Z₃Cl₂