Question 571:

• JAMB 1988

The diagram above shows the reaction path of an exothermic reaction. The heat of reaction is represented by

A. L
B. Ll
C. Lll
D. LV

Question 572:

• JAMB 1988

The IUPAC name for

A. 2-methylbutanoic acid
B. 2-methyl-1- hydroxyketone
C. 2-methyl-1-hydroxy aldehyde
D. 2-methylpentanoic acid

Question 573:

• JAMB 1988

Carbon (ll) oxide may be collected as shown above because it

A. Is heavier than air
B. Is less dense than air
C. Is insoluble in water
D. Burns in oxygen to form carbon (IV) oxide

Question 574:

• JAMB 1989

Which of the following would support the conclusion that a solid sample is a mixture?

A. The solid can be ground to a fine powder
B. The density of the solid is 2.25 g dm³
C. The solid has a melting range of 300^oC to 375^oC
D. The solid absorbs moisture from the atmosphere

Question 575:

• JAMB 1989

Which of the following would support the conclusion that a solid sample is a mixture?

A. The solid can be ground to a fine powder
B. The density of the solid is 2.25 g dm³
C. The solid has a melting range of 300^oC to 375^oC
D. The solid absorbs moisture from the atmosphere