Question 781:

• JAMB 1993

Two atoms represented as U and U are?

A. Isomers
B. Allotropes
C. Isotopes
D. Anomers

Question 782:

• JAMB 1993

As the difference in electronegativity between bonded atoms increases, polarity of the bond?

A. Decreases
B. Increases
C. Remains unchanged
D. Reduces to zero

Question 783:

• JAMB 1993

Which group of elements forms hydrides that are pyramidal in structure?

A. III
B. IV
C. V
D. VI

Question 784:

• JAMB 1993

Water has a rather high boiling point despite its low molecular mass because of the presence of?

A. Hydrogen bonding
B. Covalent bonding
C. Ionic bonding
D. Metallic bonding

Question 785:

• JAMB 1993

Argon is used in gas-filled electric lamp because it helps to?

A. Prevent the reduction of the lamp fillaments
B. Prevent oxidation of the lamp fillaments
C. Make the lamp fillament glow brightly
D. Keep the atmosphere in the lamp inert