Solvents For Fats, Oil, And Paints Jamb Chemistry Past Questions
Question 1
A liquid that will dissolve fat is
- A. hydrochloric acid
- B. calcium hydrochloride
- C. kerosene
- D. water
Question 2
In countries where the temperature fall below 273k, salt always spilled on the road in order to
- A. increase the boiling point
- B. increase the density of the ice
- C. make the ice impure
- D. reduce the freezing point of ice
Question 3
Liquid black soap is made by boiling palm oil with liquid extract of ash. The function of the ash is to provide the ?
- A. Acid
- B. Ester of alkanoic acid
- C. Alkali
- D. Alkanol
Question 4
4g each of aluminium foil and aluminium powder were introduced respectively into flasks P and Q.
Flask P was treated with warm bench sodium hydroxide and all the aluminium dissolved in one hour. Flask Q was treated with cold sodium hydroxide and all the aluminium dissolved in 10 minutes. What was responsible for Q reacting faster than P?
- A. There were more aluminium atoms in Q than P
- B. The heat given off in retarded the reaction
- C. Q generated more pressure than P during the reaction
- D. P generated more pressure than Q
- E. Q has a greater surface area for the reaction than P
