Use the information below to answer this question.

\(\begin{array}{c|c}

\text{Stock} & 11,250 \\

\hline

\text{Debtors} & 18,750 \\

\hline

\text{Creditors} & 3,750 \\

\hline

\text{Bank} & 4,000 \\

\hline

\text{Net profit} & 7,500 \\

\hline

\text{Net} & 60,000 \\

\end{array}\)

Calculate the acid test ratio

• A. 5 : 1
• B. 6 : 1
• C. 6 : 1 : 1
• D. 4 : 1

A capacitor 8\(\mu\)F is charged to a potential difference of 100V. The energy stored by the capacitor is

• A. 1.0 x 10⁴J
• B. 8.0 x 10J
• C. 1.25 x 10J
• D. 4.0 x 10^-2J

Halidu and Hamed are business partners with N30,000 and N20,000 capital respectively. At the end of the financial year, a profit of N12,000, which included Halidu's salary of N3,000 was made. Halidu's share of the profit is

• A. N7,500
• B. N6,000
• C. N5,400
• D. N4,500

Given:

Liabilities..............N23,700

Current assets...........N20,300

Fixed assets.............N64,500

What is the capital introduced by the proprietor?

• A. N40,800
• B. N61,100
• C. N88,200
• D. N108 500

The simplest form of nervous pathway which links receptors with effectors is known as the

• A. relay neuron
• B. reflex arc
• C. motor nerves
• D. sensory nerves

In the absence of a partnership agreement, profits and losses are shared ______.

• A) in the ratio of capital
• B) equally
• C) in the ratio of drawings
• D) according to services rendered

(a) (i) Define nuclear fission.

(ii) A certain natural decay series starts with \(^{238}_{92}U\) and ends with\(^{230}_{90}Th\). Each step involves the loss of an alpha or a beta particle. Using the given information, deduce how many alpha beta particpes were emitted.

(b) Consider the equilibrium reaction represented by the following equation:

A\(_{2(9)}\) + 3B\(_{2(9)}\) \(\rightleftharpoons\) 2AB\(_{3(g)}\); \(\Delta\)H = + xkJmol\(^{-1}\)

Explain briefly the effect of each of the following changes on the equilibrium composition: (i) increase in concentrat of B; (ii) decrease in pressure of the system; (iii) addition of catalyst.

(c) The lattice energies of three sodium halides are as follows:

Explain briefly the trend.

(d) State the property exhibited by nitrogen (IV) oxide in each of the following reactions:

(i) 4Cu + 2NO\(_2\) \(\to\) 4CuO + N\(_2\);

(ii) H\(_2\)O + 2NO\(_2\) \(\to\) HNO\(_3\) + HNO\(_2\).

(e) Iron is manufacturcd in a blast furnace using iron ore (Fe\(_2\)O\(_3\)), coke and limestone. Write the equation for the reaction(s) at the: (i) top of the furnace; (ii) middle of the furnace; (iii) bottom of the furnace.

(f) (i) Name two products of destructive distillation of coal. (ii) Give one use of each product in (f)(i).

Kerosene is a product refined from

• A. Petrol
• B. Petroleum Jelly
• C. Crude oil
• D. Plan oil

Basic extractive activities are classified as

• A. manufacturing production
• B. tertiary production
• C. secondary production
• D. primary production

When a government acquires business enterprises formerly owned by individuals, it is termed?

• A. commercialization
• B. indigenization
• C. privatization
• D. nationalization