Post Utme Chemistry Questions
Question 76:
When an atom gains an electron, it becomes ____________
- A Chemically inactive
- B Negatively charged
- C Oxidized
- D A cation.
Question 77:
"Equal volumes of all gases at the same temperature and pressure contain the same number of molecules" is an expression of ____________
- A Charlie's Law
- B Boyle's Law
- C Graham's Law
- D Avogadro's Law.
Question 78:
Stainless steel is an alloy of ____________
- A Carbon, iron and lead
- B Carbon, iron and chromium
- C Carbon, iron and copper
- D Carbon, iron and silver
- E Carbon and iron only
Question 79:
Crude petroleum usually seen on some Nigeria's creeks and waterways can be dispersed or removed by ____________
- A Heating the affected parts in order to boil off the petroleum
- B Mechanically stirring to dissolve the petroleum in water
- C Pouring organic solvents to dissolve the petroleum
- D Spraying the water with detergents
- E Cooling to freeze out the petroleum
Question 80:
Solution \(X, Y\) and \(Z\) have pH values of \(3.0,5.0\) and \(9.0\) respectively. Which of the \\ following statements are correct?
- A All the solutions are acidic
- B All solutions are basic
- C \(Y\) and \(Z\) are more acidic than eater
- D \(Y\) is more acidic than \(X\)
- E \(Z\) is the least acidic