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Separation of mixtures and purification of chemical substances - Jamb Chemistry Past Questions and Answers

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Jamb Chemistry Past Questions

Jamb Past Questions and Answers on Separation of mixtures and purification of chemical substances

Question 81:


The salt formed from a reaction between citric acid and sodium hydroxide in solution will be

A. Acidic
B. Basic
C. Complex
D. Neutral


Question 82:


Which of the following is an example of a mixture?

A. Common salt
B. Blood
C. Sand
D. Washing soda


Question 83:


Which of the following is an example of a mixture?

A. Common salt
B. Blood
C. Sand
D. Washing soda


Question 84:


Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V)
[Ca = 40, N = 14, O = 16]

A. 8.5%
B. 13.1%
C. 17.1%
D. 27.6%


Question 85:


Substance employed as drying agents are usually

A. Amphoteric
B. Hygroscopic
C. Efflorescent
D. Acidic






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