Jamb Chemistry 1995 Past Questions and Answers

Question 11:

• JAMB 1995

The ability of ionic solids is generally due to the?

A. Negative electron affinity of most atoms
B. Crystal lattice forces
C. Electron pair sharing
D. Positive ionization potentials

Question 12:

• JAMB 1995

Which of the following statements is FALSE about isotopes of the same element?

A. They have the same number of electrons in their outermost shells
B. They have different atomic masses
C. They have the same atomic number and the number of electrons
D. They have the same atomic number but different umber of elelctrons

Question 13:

• JAMB 1995

Helium is often used in observation balloons because it is?

A. Light and combustible
B. Light and non-combustible
C. Heavy and combustible
D. Heavy and non-combustible

Question 14:

• JAMB 1995

Deliquescent substances are also?

A. Efflorescent
B. Anhydrous
C. Hygroscopic
D. Insoluble

Question 15:

• JAMB 1995

When plastics and packaging materials made from chloroethene are burnt in the open, the mixture of gases released into the atmosphere is most likely to contain?

A. Ethane
B. Chlorine
C. Hydrogen chloride
D. Ethene