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Chemistry and Industry - Jamb Chemistry Past Questions and Answers

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Jamb Chemistry Past Questions

Jamb Past Questions and Answers on Chemistry and Industry

Question 51:


A quantity of air was passed through a weighed amount of alkaline pyrogallol. An increase in the weight of the pyrogallol would result from the absorption of?

A. Nitrogen
B. Neon
C. Argon
D. Oxygen


Question 52:


A property of a colloidal dispersion which a solution does not have is?

A. The Tyndall effect
B. Homogeneity
C. Osmotic pressure
D. Surface polarity


Question 53:


50 cm3 of sulphur (IV) oxide, 800 cm3 of ammonia, 450 cm3 of hydrogen chloride, 1.0 cm3 of at 15°C. Which of the following is suitable for demonstrating the fountain experiment?

A. Sulphur (IV) oxide hydrogen chloride
B. Carbon (IV) oxide and amonia
C. Amonia and hydrogen chloride
D. Carbon (IV) oxide and surphur (IV) oxide


Question 54:


Magnesium (IV) oxide is known to hasten the decomposition of hydrogen peroxide. Its main action is to?

A. Increase the surface area of the reactants
B. Increase the concntration of the reactants
C. Lower the activation energy for the reaction
D. Lower the heat of reaction, ∆H, for the reaction


Question 55:


Which of the following gases will rekindle a brightly glowing splint?

A. NO2
B. NO
C. N2O
D. CI2






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