Post Utme Chemistry Past Questions and Answers

Question 556:

Alloys are best prepped by ____________

A. High temperature during welding of the metals
B. Electrolysis using the major metallic component as cathode
C. Reducing a mixture of anode of the element
D. Cooling a molten mixture of the necessary element

Question 557:

In the periodic table which is the property that decreases along the periods and increase down the period and increases down the groups?

A. Atomic number
B. Electron affinity
C. Location patent
D. Atomic reactivity

Question 558:

If the rate law obtained for a given reaction rate K[X]n [Y]m, the overall orter is ____________

A. Nm
B. N/m
C. N+m
D. N-m

Question 559:

What happens when the nitrates of potassium, zinc and copper are separately heated?

A. All the nitrates will decompose to their respective metals
B. The nitrates of calcium and potassium will decompose to their nitrates
C. Only coper nitrate decomposes to the metal
D. The nitrate of calcium, zinc and copper decompose to their oxides

Question 560:

The scale formation in a kettle is caused by the presence in water of ____________

A. Calcium sulphate
B. Calcium carbonate
C. Calcium hydrogen carbonate
D. Calcium hydroxides