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3661

(a) Arrange the following in their correct order of increasing energy: alpha particles, gamma rays and beta particles

(b) State one difference between nuclear fission and nuclear fusion

View Answer & Discuss WAEC 1988
3662

50cm\(^{3}\) of sulphur (IV) oxide were produced at s.t.p. when some quantity of powdered sulphur were burnt in excess oxygen

(a) Write the equation for the reaction

(b) Calculate the volume of oxygen used up during the reaction

(c) Which of the gas laws is applicable? State the law.

View Answer & Discuss (1) WAEC 1988
3663

(a) How does the collision theory explain the rate of a chemical reaction?
(b) State how each of the following affects the rates of chemical reactions:

(i) surface area (ii) catalyst

View Answer & Discuss WAEC 1988
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3664

(a) Write the ionic equation for the reaction between zinc powder and silver trioxonitrate (VI) solution

(b) Which substance in (a) above is (i) oxidized, (ii) reduced?

(c) State two applications of oxidation numbers

View Answer & Discuss WAEC 1988
3665

 (a) What is a carbohydrate?

(b) Name two types of carbohydrates and give one example of each type

View Answer & Discuss WAEC 1988
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now