Post Utme Chemistry Past Questions and Answers

Question 781:

Which of the following metal is the least reactive?

A. Pv
B. Sn
C. Hb
D. Au

Question 782:

Which of the following in an example if chemical change?

A. Dissolution of salt in water
B. Rusting of iron
C. Melting of ice
D. Separating mixtures by distillation

Question 783:

Which of the following compound is not a raw material for the manufacture of plastic?

A. Ethyne
B. Ethane
C. Monochloro-ethene
D. Propene
E. Butadiene

Question 784:

The phenomenon observed when dust particles collide randomly is a beam of sun light is known as ____________

A. Tyndale effect
B. Diffusion
C. Osmosis
D. Brownian movement
E. Dialysis

Question 785:

The mass number of an atom of an element is sum of its ____________

A. Hlectron, neutron and proton
B. Electrons and proton
C. Protons and neutrons
D. Orbital electrons
E. Valence electrons