Jamb Chemistry Past Questions and Answers

Question 1746:

• JAMB 2014

If the difference in electronegativity of elements P and Q is 3.0. The bond that will be formed between them is

A. Metallic
B. Covalent
C. Co-ordinate
D. Ionic

Question 1747:

• JAMB 2014

How many protons, neutrons and electrons respectively are present in the element 60/27 Co?

A. 27, 33 and 33
B. 33, 27 and 27
C. 27, 33, and 27
D. 60, 33 and 60

Question 1748:

• JAMB 2014

The radio active radiation used in studying the arrangement of particles in giant organic molecules is

A. \(\gamma\)- rays
B. \(\alpha\)- particles
C. X-rays
D. \(\beta\) - particles

Question 1749:

• JAMB 2014

A silicon -containing ore has 92% ²⁸Si, 5% ²⁹Si and 3% ³⁰Si. Calculate the relative atomic mass of the silicon.

A. 14.00
B. 29.00
C. 28.11
D. 28.00

Question 1750:

• JAMB 2014

The nitrogen obtained from air has a density higher than the one from nitrogen-containing compounds because the one from air is contaminated with

A. Water vapour
B. Oxgyen
C. Rare gases
D. Carbon (IV) oxide