Post Utme Chemistry Past Questions and Answers

Question 576:

Amino acids ate the basis units of ____________

A. Carbohydrates
B. Protein
C. Lipids
D. Nucleic acids

Question 577:

The number of atoms in one mole of a substance is equal to ____________

A. The atomic number
B. The Avogadro Number
C. The gas constant
D. The number of neutrons

Question 578:

Which of the following statement is NOT true of electrovalent compounds?

A. They are solids
B. They do not vaporize easily
C. They usually dissolve in water
D. The elements forming the compounds normally have their valency electrons in a shaped state

Question 579:

If concentrated sulphuric acid is added to sugar and warmed gently, the sugar changes from white to brown and finally to a black mass of carbon.
In this reaction concentrated sulphuric acid in acting as ____________

A. A drying agent
B. An oxidizing agent
C. A dehydrating agent
D. A reducing agent

Question 580:

Which of the following can have isomers?

A. C2H4
B. C4H6
C. C4H3
D. C2H6O