Neco Chemistry 2009 Past Questions and Answers

Question 16:

• NECO 2009

The green house effect is a climatic condition associated with the presence of excess ____________

A. Carbon (II) oxide
B. Carbon (IV) oxide
C. Hydrogen sulphide
D. Nitrogen (II) oxide
E. Oxygen

Question 17:

• NECO 2009

The following are ores of metals EXCEPT

A. Bauxite
B. Dolomite
C. Graphite
D. Haematite
E. Magnetite

Question 18:

• NECO 2009

Ptotal = P1 + P2 + P3 + ____________ Pn, is an expression of law

A. Boyle’s
B. Charles’
C. Dalton’s
D. Graham’s
E. Gay Lussac’s

Question 19:

• NECO 2009

All the following belong to the same family EXCEPT

A. Glycerol
B. Nylon
C. Perspex polyethene
D. Polyethene
E. Polystyrene

Question 20:

• NECO 2009

How many atoms of chlorine are required to saturate the double bonds of a compound containing a triene?

A. 2
B. 3
C. 4
D. 5
E. 6