Chemistry 1995 JAMB Past Questions

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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

View Answer & Discuss (5) 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

View Answer & Discuss (1) JAMB 1995

Deliquescent substances are also?

A. efflorescent
B. anhydrous
C. hygroscopic
D. insoluble

View Answer & Discuss (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

View Answer & Discuss JAMB 1995

The difference between colloides and and suspensions is brought out clearly by the fact that while colloids?

A. do not scatter light, suspensions do
B. can be separated by filtration, suspension cannot be so separated
C. can be separated by a membrane, suspensions cannot
D. do not settle out on standing, suspensions do

View Answer & Discuss (2) JAMB 1995

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Chemistry 1995 JAMB Past Questions

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