Post Utme Chemistry Questions
Question 286:
The functional group present in carboxylic acids is:
- A Amino functional group
- B Carboxyl functional group
- C Hydroxyl functional group
- D Carbonyl functional group
Question 287:
Temporary hardness in water is mainly caused by:
- A Calcium hydrogen carbonates
- B Sodium chloride compounds
- C Potassium nitrate compounds
- D Copper sulfate compounds
Question 288:
In the equilibrium reaction:<br/>PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)<br/>Increasing pressure favours formation of:
- A Phosphorus trichloride gas
- B Chlorine gaseous product
- C Catalyst decomposition products
- D Phosphorus pentachloride gas
Question 289:
The oxidation number of chlorine in NaClO is:
- A Negative one value
- B Positive seven value
- C Positive one value
- D Negative seven value
Question 290:
Electroplating mainly helps to:
- A Prevent metallic corrosion
- B Produce radioactive substances
- C Remove metallic conductivity
- D Increase molecular movement