Post Utme Chemistry Questions
Question 46:
Which of the following is not true of metals?
- A They are good conductors of <br/>heat and electricity
- B They are ductile and malleable
- C Their oxides are basic
- D They can be used as insulators
Question 47:
Which of the following is not a property of chlorine?
- A It is greenish yellow and has a choking smell
- B It bleaches litmus paper
- C It is a liquid at room temperature and pressure
- D It has a higher density than air
Question 48:
If calcium has atomic number 20 and mass number 40, the constituent of the atom is ____________
- A 20 protons, 10 neutrons and 10 electrons
- B 20 protons, 20 neutrons and 20 electrons
- C 20 protons, 20 neutrons and no electrons
- D 10 protons, 10 neutrons and 20 electrons
Question 49:
In the reaction between sodium hydroxide and sulphuric acid solutions. What volume of 0.5molar sodium hydroxide would exactly neutralize 10cm3of 1.25molar sulphuric acid?
- A 5cm³
- B 10cm³
- C 20cm³
- D 25cm³
- E 50cm³
Question 50:
A small quantity of solid ammonium chloride \((NH_4Cl)\) was heated gently in a test tube. The solid gradually disappear to produce a mixture of two gases later a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have undergone ____________
- A Distillation
- B Sublimation
- C Precipitation
- D Evaporation
- E Decomposition