On the basis of the electrochemical series, which of these ions will show the greater tendency to be discharged at the cathode in an electrolytic cell

• A. cu²⁺
• B. sn²⁺
• C. fe²⁺
• D. zn²⁺

The table below shows a demand schedule for eggs. What is the equilibrium price?

• A. N 100
• B. N110
• C. N60
• D. N80

A factor to be considered in extending credit facilities to a customer is the

• A. nature of products to be sold
• B. cost of producing the product
• C. individual's total purchases in a given period
• D. number of channel member involved in distribution

(a)(i) What is meant by the term artificial radioactivity?

(ii) Complete the table below

(b) In an x-ray tube, an electron is accelerated from rest towards a metal target by a 30 kV source. Calculate the kinetic energy of the electron. [e=1.6 x 10\(^{-19}\)C]

(c) The table below shows the frequencies of radiations incident on a certain metal and the corresponding kinetic energies of the photoelectrons.

(i) Plot a graph of kinetic energy, K.E, on the vertical axis and frequency, f, on the horizontal axis starting both axes from the origin (0,0).

(ii) From the graph, determine the:

i. Planck's constant;

ii. Threshold frequency of radiations;

iii. Work function of the metal.

Using the kinetic theory of matter, explain the definite structure of solids.

This question is based on Zaynab Alkali's The Stillborn.

Li's initial aspiration in the novel is to

• A. escape from village life to the city
• B. marry a handsome man
• C. join her husband in the city
• D. remain in the peaceful village

The prophet whose wife was impious and consequently suffered the same calamity with the unbelievers was

• A. Shuaib
• B. Yusuf
• C. Musa
• D. Lut

Which of the following features of the tadpole indicates that the animal is herbivorous? Possession of

• A. operculum
• B. muscular tail
• C. long coiled intestine
• D. internal gills

Money spent on buying of plots of land by a firm is

• A) Capital Expenditure
• B) Capital receipts
• C) Revenue Expenditure
• D) Revenue Receipts

The path through which a product moves from the manufacturer to the consumer is a?

• A. channel of communication
• B. line of production
• C. means of transportation
• D. channel of distribution