Jamb Chemistry Past Questions and Answers

Question 1791:

• JAMB 2015

Which of these require crystallization most?

A. Drug making
B. Cement making
C. Paint making
D. Perfume making

Question 1792:

• JAMB 2015

Iron is often galvanized in order to

A. Make it more malleable
B. Remove the impurities unit
C. Protect it against corrosion
D. Render it passive

Question 1793:

• JAMB 2015

In the industrial production of H₂ is removed by (solution)

A. Washing under pressure
B. Drying over phosphorus (V) oxide
C. Passing the mixture to the limewater
D. Using ammonical copper (I) chlorine

Question 1794:

• JAMB 2015

The gas that is most useful in protecting humans against solar marathon is

A. Chlorine
B. Ozone
C. Carbon IV oxide
D. Hydrogen sulphur

Question 1795:

• JAMB 2015

Vulcanization involve the removal of

A. Monometer
B. The single bond
C. The double bond
D. A polymer