2003 WAEC SSCE Chemistry Past Questions

Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing West African Examinations Council (WAEC). Always confirm official exam, admission, registration, syllabus, timetable, and result information from WAEC official website, WAEC Nigeria.

WAEC official website WAEC Nigeria

2003

A reducing agent is tested using acidified potassium manganate(VII) solution. Which listed observation is expected in this test?

2003

Which of the following statements about an exothermic reaction is correct?

2003

Sea shells contain mainly CaCO 3. Calcium oxide can be prepared from sea shells by

2003

Which of the following processes involves neutralization?

2003

The pH of 0.50 mol dm-3 solutions of HCI, H2SO4 and CH3COOH were measured. which of the following statements about the values obtained is correct?

2003

Determine the amount of electrons needed to deposit 6.4g of copper during the electrolysis of copper (ll) tetraoxosulphate (IV) solution [Cu = 64]

2003

In conventional tin electroplating using a tin-salt solution and a soluble metal anode, which statements are correct?I. The electrolyte contains a soluble salt of tin.II. The object to be plated is made the cathode.III.…

2003

Five metals represented by the letters V to Z are arranged in order of their reactivity as shown . V>W>X>Y>Z.Which of the metals is most likely extracted by the electrolysis of its fused chloride?

2003

Five metals represented by the letters V to Z are arranged in order of their reactivity as shown . V>W>X>Y>Z.Which of the metals cannot displace Y from an aqueous solution of its salt?

2003

Consider the usual galvanic cell written as Zn(s)/Zn2+(aq)//Cu2+(aq)/Cu(s). Which equation gives the cell reaction in the direction represented?

2003

Wine containing 8% to 17% ethanol can be converted to gin containing about 40% ethanol by

2003

A given fuel has an octane number of 100. This means that

2003

Which of the following compounds has the same empirical formula as benzene?

2003

The equation for the reaction at an inert anode during the electrolysis of concentrated sodium chloride solution is

2003

A given fuel has an octane number of 100. This means that

2003

Excess ethene is shaken with cold, dilute acidified KMnO4 solution under mild conditions. What is the initial organic product?

2003

For starch, what process does this simplified repeat-unit equation represent?(C6H10O5)n + nH2O → nC6H12O6

2003

The reaction of vegetable oil with a solution of wood ash is

2003

What is the organic product of the reaction of C2H 5OH with excess acidified K 2Cr 2O7(aq)?

2003

Which of the following substances could be responsible for the banana taste of a food flavour?

1 2 3

Study with fewer interruptions on Android

Use Ulearngo on a verified device for smoother past-question study.